1 | // Type definitions for Jest 29.0
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2 | // Project: https://jestjs.io/
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3 | // Definitions by: Asana (https://asana.com)
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4 | // Ivo Stratev <https://github.com/NoHomey>
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5 | // jwbay <https://github.com/jwbay>
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6 | // Alexey Svetliakov <https://github.com/asvetliakov>
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7 | // Alex Jover Morales <https://github.com/alexjoverm>
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8 | // Allan Lukwago <https://github.com/epicallan>
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9 | // Ika <https://github.com/ikatyang>
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10 | // Waseem Dahman <https://github.com/wsmd>
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11 | // Jamie Mason <https://github.com/JamieMason>
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12 | // Douglas Duteil <https://github.com/douglasduteil>
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13 | // Ahn <https://github.com/ahnpnl>
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14 | // Jeff Lau <https://github.com/UselessPickles>
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15 | // Andrew Makarov <https://github.com/r3nya>
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16 | // Martin Hochel <https://github.com/hotell>
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17 | // Sebastian Sebald <https://github.com/sebald>
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18 | // Andy <https://github.com/andys8>
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19 | // Antoine Brault <https://github.com/antoinebrault>
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20 | // Gregor Stamać <https://github.com/gstamac>
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21 | // ExE Boss <https://github.com/ExE-Boss>
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22 | // Alex Bolenok <https://github.com/quassnoi>
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23 | // Mario Beltrán Alarcón <https://github.com/Belco90>
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24 | // Tony Hallett <https://github.com/tonyhallett>
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25 | // Jason Yu <https://github.com/ycmjason>
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26 | // Pawel Fajfer <https://github.com/pawfa>
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27 | // Regev Brody <https://github.com/regevbr>
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28 | // Alexandre Germain <https://github.com/gerkindev>
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29 | // Adam Jones <https://github.com/domdomegg>
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30 | // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
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31 | // Minimum TypeScript Version: 4.3
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32 |
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33 | declare var beforeAll: jest.Lifecycle;
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34 | declare var beforeEach: jest.Lifecycle;
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35 | declare var afterAll: jest.Lifecycle;
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36 | declare var afterEach: jest.Lifecycle;
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37 | declare var describe: jest.Describe;
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38 | declare var fdescribe: jest.Describe;
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39 | declare var xdescribe: jest.Describe;
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40 | declare var it: jest.It;
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41 | declare var fit: jest.It;
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42 | declare var xit: jest.It;
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43 | declare var test: jest.It;
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44 | declare var xtest: jest.It;
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45 |
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46 | declare const expect: jest.Expect;
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47 |
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48 | type ExtractEachCallbackArgs<T extends ReadonlyArray<any>> = {
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49 | 1: [T[0]];
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50 | 2: [T[0], T[1]];
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51 | 3: [T[0], T[1], T[2]];
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52 | 4: [T[0], T[1], T[2], T[3]];
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53 | 5: [T[0], T[1], T[2], T[3], T[4]];
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54 | 6: [T[0], T[1], T[2], T[3], T[4], T[5]];
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55 | 7: [T[0], T[1], T[2], T[3], T[4], T[5], T[6]];
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56 | 8: [T[0], T[1], T[2], T[3], T[4], T[5], T[6], T[7]];
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57 | 9: [T[0], T[1], T[2], T[3], T[4], T[5], T[6], T[7], T[8]];
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58 | 10: [T[0], T[1], T[2], T[3], T[4], T[5], T[6], T[7], T[8], T[9]];
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59 | fallback: Array<T extends ReadonlyArray<infer U> ? U : any>;
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60 | }[T extends Readonly<[any]>
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61 | ? 1
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62 | : T extends Readonly<[any, any]>
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63 | ? 2
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64 | : T extends Readonly<[any, any, any]>
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65 | ? 3
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66 | : T extends Readonly<[any, any, any, any]>
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67 | ? 4
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68 | : T extends Readonly<[any, any, any, any, any]>
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69 | ? 5
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70 | : T extends Readonly<[any, any, any, any, any, any]>
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71 | ? 6
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72 | : T extends Readonly<[any, any, any, any, any, any, any]>
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73 | ? 7
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74 | : T extends Readonly<[any, any, any, any, any, any, any, any]>
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75 | ? 8
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76 | : T extends Readonly<[any, any, any, any, any, any, any, any, any]>
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77 | ? 9
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78 | : T extends Readonly<[any, any, any, any, any, any, any, any, any, any]>
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79 | ? 10
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80 | : 'fallback'];
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81 |
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82 | type FakeableAPI =
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83 | | 'Date'
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84 | | 'hrtime'
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85 | | 'nextTick'
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86 | | 'performance'
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87 | | 'queueMicrotask'
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88 | | 'requestAnimationFrame'
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89 | | 'cancelAnimationFrame'
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90 | | 'requestIdleCallback'
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91 | | 'cancelIdleCallback'
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92 | | 'setImmediate'
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93 | | 'clearImmediate'
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94 | | 'setInterval'
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95 | | 'clearInterval'
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96 | | 'setTimeout'
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97 | | 'clearTimeout';
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98 |
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99 | interface FakeTimersConfig {
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100 | /**
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101 | * If set to `true` all timers will be advanced automatically by 20 milliseconds
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102 | * every 20 milliseconds. A custom time delta may be provided by passing a number.
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103 | * The default is `false`.
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104 | */
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105 | advanceTimers?: boolean | number;
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106 | /**
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107 | * List of names of APIs that should not be faked. The default is `[]`, meaning
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108 | * all APIs are faked.
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109 | */
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110 | doNotFake?: FakeableAPI[];
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111 | /**
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112 | * Use the old fake timers implementation instead of one backed by `@sinonjs/fake-timers`.
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113 | * The default is `false`.
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114 | */
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115 | legacyFakeTimers?: boolean;
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116 | /** Sets current system time to be used by fake timers. The default is `Date.now()`. */
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117 | now?: number | Date;
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118 | /** Maximum number of recursive timers that will be run. The default is `100_000` timers. */
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119 | timerLimit?: number;
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120 | }
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121 |
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122 | declare namespace jest {
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123 | /**
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124 | * Disables automatic mocking in the module loader.
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125 | */
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126 | function autoMockOff(): typeof jest;
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127 | /**
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128 | * Enables automatic mocking in the module loader.
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129 | */
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130 | function autoMockOn(): typeof jest;
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131 | /**
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132 | * Clears the mock.calls and mock.instances properties of all mocks.
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133 | * Equivalent to calling .mockClear() on every mocked function.
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134 | */
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135 | function clearAllMocks(): typeof jest;
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136 | /**
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137 | * Use the automatic mocking system to generate a mocked version of the given module.
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138 | */
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139 | // tslint:disable-next-line: no-unnecessary-generics
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140 | function createMockFromModule<T>(moduleName: string): T;
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141 | /**
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142 | * Resets the state of all mocks.
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143 | * Equivalent to calling .mockReset() on every mocked function.
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144 | */
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145 | function resetAllMocks(): typeof jest;
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146 | /**
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147 | * available since Jest 21.1.0
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148 | * Restores all mocks back to their original value.
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149 | * Equivalent to calling .mockRestore on every mocked function.
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150 | * Beware that jest.restoreAllMocks() only works when mock was created with
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151 | * jest.spyOn; other mocks will require you to manually restore them.
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152 | */
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153 | function restoreAllMocks(): typeof jest;
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154 | /**
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155 | * Removes any pending timers from the timer system. If any timers have
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156 | * been scheduled, they will be cleared and will never have the opportunity
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157 | * to execute in the future.
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158 | */
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159 | function clearAllTimers(): void;
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160 | /**
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161 | * Returns the number of fake timers still left to run.
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162 | */
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163 | function getTimerCount(): number;
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164 | /**
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165 | * Set the current system time used by fake timers. Simulates a user
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166 | * changing the system clock while your program is running. It affects the
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167 | * current time but it does not in itself cause e.g. timers to fire; they
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168 | * will fire exactly as they would have done without the call to
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169 | * jest.setSystemTime().
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170 | *
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171 | * > Note: This function is only available when using modern fake timers
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172 | * > implementation
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173 | */
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174 | function setSystemTime(now?: number | Date): void;
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175 | /**
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176 | * When mocking time, Date.now() will also be mocked. If you for some
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177 | * reason need access to the real current time, you can invoke this
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178 | * function.
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179 | *
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180 | * > Note: This function is only available when using modern fake timers
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181 | * > implementation
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182 | */
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183 | function getRealSystemTime(): number;
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184 | /**
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185 | * Indicates that the module system should never return a mocked version
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186 | * of the specified module, including all of the specificied module's dependencies.
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187 | */
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188 | function deepUnmock(moduleName: string): typeof jest;
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189 | /**
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190 | * Disables automatic mocking in the module loader.
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191 | */
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192 | function disableAutomock(): typeof jest;
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193 | /**
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194 | * Mocks a module with an auto-mocked version when it is being required.
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195 | */
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196 | // tslint:disable-next-line no-unnecessary-generics
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197 | function doMock<T = unknown>(moduleName: string, factory?: () => T, options?: MockOptions): typeof jest;
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198 | /**
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199 | * Indicates that the module system should never return a mocked version
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200 | * of the specified module from require() (e.g. that it should always return the real module).
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201 | */
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202 | function dontMock(moduleName: string): typeof jest;
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203 | /**
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204 | * Enables automatic mocking in the module loader.
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205 | */
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206 | function enableAutomock(): typeof jest;
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207 | /**
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208 | * Creates a mock function. Optionally takes a mock implementation.
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209 | */
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210 | function fn(): Mock;
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211 | /**
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212 | * Creates a mock function. Optionally takes a mock implementation.
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213 | */
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214 | function fn<T, Y extends any[]>(implementation?: (...args: Y) => T): Mock<T, Y>;
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215 | /**
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216 | * (renamed to `createMockFromModule` in Jest 26.0.0+)
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217 | * Use the automatic mocking system to generate a mocked version of the given module.
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218 | */
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219 | // tslint:disable-next-line: no-unnecessary-generics
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220 | function genMockFromModule<T>(moduleName: string): T;
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221 | /**
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222 | * Returns whether the given function is a mock function.
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223 | */
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224 | function isMockFunction(fn: any): fn is Mock;
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225 | /**
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226 | * Mocks a module with an auto-mocked version when it is being required.
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227 | */
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228 | // tslint:disable-next-line no-unnecessary-generics
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229 | function mock<T = unknown>(moduleName: string, factory?: () => T, options?: MockOptions): typeof jest;
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230 |
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231 | /**
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232 | * Wraps types of the `source` object and its deep members with type definitions
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233 | * of Jest mock function. Pass `{shallow: true}` option to disable the deeply
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234 | * mocked behavior.
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235 | */
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236 | function mocked<T>(source: T, options?: { shallow: false }): MaybeMockedDeep<T>;
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237 | /**
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238 | * Wraps types of the `source` object with type definitions of Jest mock function.
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239 | */
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240 | function mocked<T>(source: T, options: { shallow: true }): MaybeMocked<T>;
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241 | /**
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242 | * Returns the actual module instead of a mock, bypassing all checks on
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243 | * whether the module should receive a mock implementation or not.
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244 | */
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245 | // tslint:disable-next-line: no-unnecessary-generics
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246 | function requireActual<TModule extends {} = any>(moduleName: string): TModule;
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247 | /**
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248 | * Returns a mock module instead of the actual module, bypassing all checks
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249 | * on whether the module should be required normally or not.
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250 | */
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251 | // tslint:disable-next-line: no-unnecessary-generics
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252 | function requireMock<TModule extends {} = any>(moduleName: string): TModule;
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253 | /**
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254 | * Resets the module registry - the cache of all required modules. This is
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255 | * useful to isolate modules where local state might conflict between tests.
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256 | */
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257 | function resetModules(): typeof jest;
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258 | /**
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259 | * Creates a sandbox registry for the modules that are loaded inside the callback function..
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260 | * This is useful to isolate specific modules for every test so that local module state doesn't conflict between tests.
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261 | */
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262 | function isolateModules(fn: () => void): typeof jest;
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263 | /**
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264 | * Runs failed tests n-times until they pass or until the max number of retries is exhausted.
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265 | * This only works with jest-circus!
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266 | */
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267 | function retryTimes(numRetries: number, options?: { logErrorsBeforeRetry?: boolean }): typeof jest;
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268 | /**
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269 | * Exhausts tasks queued by setImmediate().
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270 | * > Note: This function is only available when using modern fake timers
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271 | * > implementation
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272 | */
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273 | function runAllImmediates(): void;
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274 | /**
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275 | * Exhausts the micro-task queue (usually interfaced in node via process.nextTick).
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276 | */
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277 | function runAllTicks(): void;
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278 | /**
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279 | * Exhausts both the macro-task queue (i.e., all tasks queued by setTimeout(),
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280 | * setInterval(), and setImmediate()) and the micro-task queue (usually interfaced
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281 | * in node via process.nextTick).
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282 | */
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283 | function runAllTimers(): void;
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284 | /**
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285 | * Executes only the macro-tasks that are currently pending (i.e., only the
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286 | * tasks that have been queued by setTimeout() or setInterval() up to this point).
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287 | * If any of the currently pending macro-tasks schedule new macro-tasks,
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288 | * those new tasks will not be executed by this call.
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289 | */
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290 | function runOnlyPendingTimers(): void;
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291 | /**
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292 | * Advances all timers by msToRun milliseconds. All pending "macro-tasks" that have been
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293 | * queued via setTimeout() or setInterval(), and would be executed within this timeframe
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294 | * will be executed.
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295 | */
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296 | function advanceTimersByTime(msToRun: number): void;
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297 | /**
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298 | * Advances all timers by the needed milliseconds so that only the next
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299 | * timeouts/intervals will run. Optionally, you can provide steps, so it
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300 | * will run steps amount of next timeouts/intervals.
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301 | */
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302 | function advanceTimersToNextTimer(step?: number): void;
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303 | /**
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304 | * Explicitly supplies the mock object that the module system should return
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305 | * for the specified module.
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306 | */
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307 | // tslint:disable-next-line: no-unnecessary-generics
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308 | function setMock<T>(moduleName: string, moduleExports: T): typeof jest;
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309 | /**
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310 | * Set the default timeout interval for tests and before/after hooks in milliseconds.
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311 | * Note: The default timeout interval is 5 seconds if this method is not called.
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312 | */
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313 | function setTimeout(timeout: number): typeof jest;
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314 | /**
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315 | * Creates a mock function similar to jest.fn but also tracks calls to `object[methodName]`
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316 | *
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317 | * Note: By default, jest.spyOn also calls the spied method. This is different behavior from most
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318 | * other test libraries.
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319 | *
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320 | * @example
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321 | *
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322 | * const video = require('./video');
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323 | *
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324 | * test('plays video', () => {
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325 | * const spy = jest.spyOn(video, 'play');
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326 | * const isPlaying = video.play();
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327 | *
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328 | * expect(spy).toHaveBeenCalled();
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329 | * expect(isPlaying).toBe(true);
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330 | *
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331 | * spy.mockReset();
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332 | * spy.mockRestore();
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333 | * });
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334 | */
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335 | function spyOn<
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336 | T extends {},
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337 | Key extends keyof T,
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338 | A extends PropertyAccessors<Key, T> = PropertyAccessors<Key, T>,
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339 | Value extends Required<T>[Key] = Required<T>[Key],
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340 | >(
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341 | object: T,
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342 | method: Key,
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343 | accessType: A,
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344 | ): A extends SetAccessor
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345 | ? SpyInstance<void, [Value]>
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346 | : A extends GetAccessor
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347 | ? SpyInstance<Value, []>
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348 | : Value extends Constructor
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349 | ? SpyInstance<InstanceType<Value>, ConstructorArgsType<Value>>
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350 | : Value extends Func
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351 | ? SpyInstance<ReturnType<Value>, ArgsType<Value>>
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352 | : never;
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353 | function spyOn<T extends {}, M extends FunctionPropertyNames<Required<T>>>(
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354 | object: T,
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355 | method: M,
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356 | ): FunctionProperties<Required<T>>[M] extends Func
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357 | ? SpyInstance<ReturnType<FunctionProperties<Required<T>>[M]>, ArgsType<FunctionProperties<Required<T>>[M]>>
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358 | : never;
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359 | function spyOn<T extends {}, M extends ConstructorPropertyNames<Required<T>>>(
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360 | object: T,
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361 | method: M,
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362 | ): Required<T>[M] extends new (...args: any[]) => any
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363 | ? SpyInstance<InstanceType<Required<T>[M]>, ConstructorArgsType<Required<T>[M]>>
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364 | : never;
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365 | /**
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366 | * Indicates that the module system should never return a mocked version of
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367 | * the specified module from require() (e.g. that it should always return the real module).
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368 | */
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369 | function unmock(moduleName: string): typeof jest;
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370 | /**
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371 | * Instructs Jest to use fake versions of the standard timer functions.
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372 | */
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373 | function useFakeTimers(config?: FakeTimersConfig): typeof jest;
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374 | /**
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375 | * Instructs Jest to use the real versions of the standard timer functions.
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376 | */
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377 | function useRealTimers(): typeof jest;
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378 |
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379 | interface MockOptions {
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380 | virtual?: boolean | undefined;
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381 | }
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382 |
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383 | type MockableFunction = (...args: any[]) => any;
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384 | type MethodKeysOf<T> = { [K in keyof T]: T[K] extends MockableFunction ? K : never }[keyof T];
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385 | type PropertyKeysOf<T> = { [K in keyof T]: T[K] extends MockableFunction ? never : K }[keyof T];
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386 | type ArgumentsOf<T> = T extends (...args: infer A) => any ? A : never;
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387 | type ConstructorArgumentsOf<T> = T extends new (...args: infer A) => any ? A : never;
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388 |
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389 | interface MockWithArgs<T extends MockableFunction> extends MockInstance<ReturnType<T>, ArgumentsOf<T>> {
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390 | new (...args: ConstructorArgumentsOf<T>): T;
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391 | (...args: ArgumentsOf<T>): ReturnType<T>;
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392 | }
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393 | type MaybeMockedConstructor<T> = T extends new (...args: any[]) => infer R
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394 | ? MockInstance<R, ConstructorArgumentsOf<T>>
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395 | : T;
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396 | type MockedFn<T extends MockableFunction> = MockWithArgs<T> & { [K in keyof T]: T[K] };
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397 | type MockedFunctionDeep<T extends MockableFunction> = MockWithArgs<T> & MockedObjectDeep<T>;
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398 | type MockedObject<T> = MaybeMockedConstructor<T> & {
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399 | [K in MethodKeysOf<T>]: T[K] extends MockableFunction ? MockedFn<T[K]> : T[K];
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400 | } & { [K in PropertyKeysOf<T>]: T[K] };
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401 | type MockedObjectDeep<T> = MaybeMockedConstructor<T> & {
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402 | [K in MethodKeysOf<T>]: T[K] extends MockableFunction ? MockedFunctionDeep<T[K]> : T[K];
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403 | } & { [K in PropertyKeysOf<T>]: MaybeMockedDeep<T[K]> };
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404 | type MaybeMockedDeep<T> = T extends MockableFunction
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405 | ? MockedFunctionDeep<T>
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406 | : T extends object // eslint-disable-line @typescript-eslint/ban-types
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407 | ? MockedObjectDeep<T>
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408 | : T;
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409 | // eslint-disable-next-line @typescript-eslint/ban-types
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410 | type MaybeMocked<T> = T extends MockableFunction ? MockedFn<T> : T extends object ? MockedObject<T> : T;
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411 | type EmptyFunction = () => void;
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412 | type ArgsType<T> = T extends (...args: infer A) => any ? A : never;
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413 | type Constructor = new (...args: any[]) => any;
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414 | type Func = (...args: any[]) => any;
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415 | type ConstructorArgsType<T> = T extends new (...args: infer A) => any ? A : never;
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416 | type RejectedValue<T> = T extends PromiseLike<any> ? any : never;
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417 | type ResolvedValue<T> = T extends PromiseLike<infer U> ? U | T : never;
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418 | // see https://github.com/Microsoft/TypeScript/issues/25215
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419 | type NonFunctionPropertyNames<T> = keyof { [K in keyof T as T[K] extends Func ? never : K]: T[K] };
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420 | type GetAccessor = 'get';
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421 | type SetAccessor = 'set';
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422 | type PropertyAccessors<M extends keyof T, T extends {}> = M extends NonFunctionPropertyNames<Required<T>>
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423 | ? GetAccessor | SetAccessor
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424 | : never;
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425 | type FunctionProperties<T> = { [K in keyof T as T[K] extends (...args: any[]) => any ? K : never]: T[K] };
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426 | type FunctionPropertyNames<T> = keyof FunctionProperties<T>;
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427 | type ConstructorPropertyNames<T> = { [K in keyof T]: T[K] extends Constructor ? K : never }[keyof T] & string;
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428 |
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429 | interface DoneCallback {
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430 | (...args: any[]): any;
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431 | fail(error?: string | { message: string }): any;
|
432 | }
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433 |
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434 | type ProvidesCallback = ((cb: DoneCallback) => void | undefined) | (() => Promise<unknown>);
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435 | type ProvidesHookCallback = (() => any) | ProvidesCallback;
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436 |
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437 | type Lifecycle = (fn: ProvidesHookCallback, timeout?: number) => any;
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438 |
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439 | interface FunctionLike {
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440 | readonly name: string;
|
441 | }
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442 |
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443 | interface Each {
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444 | // Exclusively arrays.
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445 | <T extends any[] | [any]>(cases: ReadonlyArray<T>): (
|
446 | name: string,
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447 | fn: (...args: T) => any,
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448 | timeout?: number,
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449 | ) => void;
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450 | <T extends ReadonlyArray<any>>(cases: ReadonlyArray<T>): (
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451 | name: string,
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452 | fn: (...args: ExtractEachCallbackArgs<T>) => any,
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453 | timeout?: number,
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454 | ) => void;
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455 | // Not arrays.
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456 | <T>(cases: ReadonlyArray<T>): (name: string, fn: (...args: T[]) => any, timeout?: number) => void;
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457 | (cases: ReadonlyArray<ReadonlyArray<any>>): (
|
458 | name: string,
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459 | fn: (...args: any[]) => any,
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460 | timeout?: number,
|
461 | ) => void;
|
462 | (strings: TemplateStringsArray, ...placeholders: any[]): (
|
463 | name: string,
|
464 | fn: (arg: any) => any,
|
465 | timeout?: number,
|
466 | ) => void;
|
467 | }
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468 |
|
469 | /**
|
470 | * Creates a test closure
|
471 | */
|
472 | interface It {
|
473 | /**
|
474 | * Creates a test closure.
|
475 | *
|
476 | * @param name The name of your test
|
477 | * @param fn The function for your test
|
478 | * @param timeout The timeout for an async function test
|
479 | */
|
480 | (name: string, fn?: ProvidesCallback, timeout?: number): void;
|
481 | /**
|
482 | * Only runs this test in the current file.
|
483 | */
|
484 | only: It;
|
485 | /**
|
486 | * Mark this test as expecting to fail.
|
487 | *
|
488 | * Only available in the default `jest-circus` runner.
|
489 | */
|
490 | failing: It;
|
491 | /**
|
492 | * Skips running this test in the current file.
|
493 | */
|
494 | skip: It;
|
495 | /**
|
496 | * Sketch out which tests to write in the future.
|
497 | */
|
498 | todo: It;
|
499 | /**
|
500 | * Experimental and should be avoided.
|
501 | */
|
502 | concurrent: It;
|
503 | /**
|
504 | * Use if you keep duplicating the same test with different data. `.each` allows you to write the
|
505 | * test once and pass data in.
|
506 | *
|
507 | * `.each` is available with two APIs:
|
508 | *
|
509 | * #### 1 `test.each(table)(name, fn)`
|
510 | *
|
511 | * - `table`: Array of Arrays with the arguments that are passed into the test fn for each row.
|
512 | * - `name`: String the title of the test block.
|
513 | * - `fn`: Function the test to be ran, this is the function that will receive the parameters in each row as function arguments.
|
514 | *
|
515 | *
|
516 | * #### 2 `test.each table(name, fn)`
|
517 | *
|
518 | * - `table`: Tagged Template Literal
|
519 | * - `name`: String the title of the test, use `$variable` to inject test data into the test title from the tagged template expressions.
|
520 | * - `fn`: Function the test to be ran, this is the function that will receive the test data object..
|
521 | *
|
522 | * @example
|
523 | *
|
524 | * // API 1
|
525 | * test.each([[1, 1, 2], [1, 2, 3], [2, 1, 3]])(
|
526 | * '.add(%i, %i)',
|
527 | * (a, b, expected) => {
|
528 | * expect(a + b).toBe(expected);
|
529 | * },
|
530 | * );
|
531 | *
|
532 | * // API 2
|
533 | * test.each`
|
534 | * a | b | expected
|
535 | * ${1} | ${1} | ${2}
|
536 | * ${1} | ${2} | ${3}
|
537 | * ${2} | ${1} | ${3}
|
538 | * `('returns $expected when $a is added $b', ({a, b, expected}) => {
|
539 | * expect(a + b).toBe(expected);
|
540 | * });
|
541 | *
|
542 | */
|
543 | each: Each;
|
544 | }
|
545 |
|
546 | interface Describe {
|
547 | // tslint:disable-next-line ban-types
|
548 | (name: number | string | Function | FunctionLike, fn: EmptyFunction): void;
|
549 | /** Only runs the tests inside this `describe` for the current file */
|
550 | only: Describe;
|
551 | /** Skips running the tests inside this `describe` for the current file */
|
552 | skip: Describe;
|
553 | each: Each;
|
554 | }
|
555 |
|
556 | type EqualityTester = (a: any, b: any) => boolean | undefined;
|
557 |
|
558 | type MatcherUtils = import('expect').MatcherUtils & { [other: string]: any };
|
559 |
|
560 | interface ExpectExtendMap {
|
561 | [key: string]: CustomMatcher;
|
562 | }
|
563 |
|
564 | type MatcherContext = MatcherUtils & Readonly<MatcherState>;
|
565 | type CustomMatcher = (
|
566 | this: MatcherContext,
|
567 | received: any,
|
568 | ...actual: any[]
|
569 | ) => CustomMatcherResult | Promise<CustomMatcherResult>;
|
570 |
|
571 | interface CustomMatcherResult {
|
572 | pass: boolean;
|
573 | message: () => string;
|
574 | }
|
575 |
|
576 | type SnapshotSerializerPlugin = import('pretty-format').Plugin;
|
577 |
|
578 | interface InverseAsymmetricMatchers {
|
579 | /**
|
580 | * `expect.not.arrayContaining(array)` matches a received array which
|
581 | * does not contain all of the elements in the expected array. That is,
|
582 | * the expected array is not a subset of the received array. It is the
|
583 | * inverse of `expect.arrayContaining`.
|
584 | *
|
585 | * Optionally, you can provide a type for the elements via a generic.
|
586 | */
|
587 | // tslint:disable-next-line: no-unnecessary-generics
|
588 | arrayContaining<E = any>(arr: E[]): any;
|
589 | /**
|
590 | * `expect.not.objectContaining(object)` matches any received object
|
591 | * that does not recursively match the expected properties. That is, the
|
592 | * expected object is not a subset of the received object. Therefore,
|
593 | * it matches a received object which contains properties that are not
|
594 | * in the expected object. It is the inverse of `expect.objectContaining`.
|
595 | *
|
596 | * Optionally, you can provide a type for the object via a generic.
|
597 | * This ensures that the object contains the desired structure.
|
598 | */
|
599 | // tslint:disable-next-line: no-unnecessary-generics
|
600 | objectContaining<E = {}>(obj: E): any;
|
601 | /**
|
602 | * `expect.not.stringMatching(string | regexp)` matches the received
|
603 | * string that does not match the expected regexp. It is the inverse of
|
604 | * `expect.stringMatching`.
|
605 | */
|
606 | stringMatching(str: string | RegExp): any;
|
607 | /**
|
608 | * `expect.not.stringContaining(string)` matches the received string
|
609 | * that does not contain the exact expected string. It is the inverse of
|
610 | * `expect.stringContaining`.
|
611 | */
|
612 | stringContaining(str: string): any;
|
613 | }
|
614 | type MatcherState = import('expect').MatcherState;
|
615 | /**
|
616 | * The `expect` function is used every time you want to test a value.
|
617 | * You will rarely call `expect` by itself.
|
618 | */
|
619 | interface Expect {
|
620 | /**
|
621 | * The `expect` function is used every time you want to test a value.
|
622 | * You will rarely call `expect` by itself.
|
623 | *
|
624 | * @param actual The value to apply matchers against.
|
625 | */
|
626 | <T = any>(actual: T): JestMatchers<T>;
|
627 | /**
|
628 | * Matches anything but null or undefined. You can use it inside `toEqual` or `toBeCalledWith` instead
|
629 | * of a literal value. For example, if you want to check that a mock function is called with a
|
630 | * non-null argument:
|
631 | *
|
632 | * @example
|
633 | *
|
634 | * test('map calls its argument with a non-null argument', () => {
|
635 | * const mock = jest.fn();
|
636 | * [1].map(x => mock(x));
|
637 | * expect(mock).toBeCalledWith(expect.anything());
|
638 | * });
|
639 | *
|
640 | */
|
641 | anything(): any;
|
642 | /**
|
643 | * Matches anything that was created with the given constructor.
|
644 | * You can use it inside `toEqual` or `toBeCalledWith` instead of a literal value.
|
645 | *
|
646 | * @example
|
647 | *
|
648 | * function randocall(fn) {
|
649 | * return fn(Math.floor(Math.random() * 6 + 1));
|
650 | * }
|
651 | *
|
652 | * test('randocall calls its callback with a number', () => {
|
653 | * const mock = jest.fn();
|
654 | * randocall(mock);
|
655 | * expect(mock).toBeCalledWith(expect.any(Number));
|
656 | * });
|
657 | */
|
658 | any(classType: any): any;
|
659 | /**
|
660 | * Matches any array made up entirely of elements in the provided array.
|
661 | * You can use it inside `toEqual` or `toBeCalledWith` instead of a literal value.
|
662 | *
|
663 | * Optionally, you can provide a type for the elements via a generic.
|
664 | */
|
665 | // tslint:disable-next-line: no-unnecessary-generics
|
666 | arrayContaining<E = any>(arr: E[]): any;
|
667 | /**
|
668 | * Verifies that a certain number of assertions are called during a test.
|
669 | * This is often useful when testing asynchronous code, in order to
|
670 | * make sure that assertions in a callback actually got called.
|
671 | */
|
672 | assertions(num: number): void;
|
673 | /**
|
674 | * Useful when comparing floating point numbers in object properties or array item.
|
675 | * If you need to compare a number, use `.toBeCloseTo` instead.
|
676 | *
|
677 | * The optional `numDigits` argument limits the number of digits to check after the decimal point.
|
678 | * For the default value 2, the test criterion is `Math.abs(expected - received) < 0.005` (that is, `10 ** -2 / 2`).
|
679 | */
|
680 | closeTo(num: number, numDigits?: number): any;
|
681 | /**
|
682 | * Verifies that at least one assertion is called during a test.
|
683 | * This is often useful when testing asynchronous code, in order to
|
684 | * make sure that assertions in a callback actually got called.
|
685 | */
|
686 | hasAssertions(): void;
|
687 | /**
|
688 | * You can use `expect.extend` to add your own matchers to Jest.
|
689 | */
|
690 | extend(obj: ExpectExtendMap): void;
|
691 | /**
|
692 | * Adds a module to format application-specific data structures for serialization.
|
693 | */
|
694 | addSnapshotSerializer(serializer: SnapshotSerializerPlugin): void;
|
695 | /**
|
696 | * Matches any object that recursively matches the provided keys.
|
697 | * This is often handy in conjunction with other asymmetric matchers.
|
698 | *
|
699 | * Optionally, you can provide a type for the object via a generic.
|
700 | * This ensures that the object contains the desired structure.
|
701 | */
|
702 | // tslint:disable-next-line: no-unnecessary-generics
|
703 | objectContaining<E = {}>(obj: E): any;
|
704 | /**
|
705 | * Matches any string that contains the exact provided string
|
706 | */
|
707 | stringMatching(str: string | RegExp): any;
|
708 | /**
|
709 | * Matches any received string that contains the exact expected string
|
710 | */
|
711 | stringContaining(str: string): any;
|
712 |
|
713 | not: InverseAsymmetricMatchers;
|
714 |
|
715 | setState(state: object): void;
|
716 | getState(): MatcherState & Record<string, any>;
|
717 | }
|
718 |
|
719 | type JestMatchers<T> = JestMatchersShape<Matchers<void, T>, Matchers<Promise<void>, T>>;
|
720 |
|
721 | type JestMatchersShape<TNonPromise extends {} = {}, TPromise extends {} = {}> = {
|
722 | /**
|
723 | * Use resolves to unwrap the value of a fulfilled promise so any other
|
724 | * matcher can be chained. If the promise is rejected the assertion fails.
|
725 | */
|
726 | resolves: AndNot<TPromise>;
|
727 | /**
|
728 | * Unwraps the reason of a rejected promise so any other matcher can be chained.
|
729 | * If the promise is fulfilled the assertion fails.
|
730 | */
|
731 | rejects: AndNot<TPromise>;
|
732 | } & AndNot<TNonPromise>;
|
733 | type AndNot<T> = T & {
|
734 | not: T;
|
735 | };
|
736 |
|
737 | // should be R extends void|Promise<void> but getting dtslint error
|
738 | interface Matchers<R, T = {}> {
|
739 | /**
|
740 | * Ensures the last call to a mock function was provided specific args.
|
741 | *
|
742 | * Optionally, you can provide a type for the expected arguments via a generic.
|
743 | * Note that the type must be either an array or a tuple.
|
744 | */
|
745 | // tslint:disable-next-line: no-unnecessary-generics
|
746 | lastCalledWith<E extends any[]>(...args: E): R;
|
747 | /**
|
748 | * Ensure that the last call to a mock function has returned a specified value.
|
749 | *
|
750 | * Optionally, you can provide a type for the expected value via a generic.
|
751 | * This is particularly useful for ensuring expected objects have the right structure.
|
752 | */
|
753 | // tslint:disable-next-line: no-unnecessary-generics
|
754 | lastReturnedWith<E = any>(value: E): R;
|
755 | /**
|
756 | * Ensure that a mock function is called with specific arguments on an Nth call.
|
757 | *
|
758 | * Optionally, you can provide a type for the expected arguments via a generic.
|
759 | * Note that the type must be either an array or a tuple.
|
760 | */
|
761 | // tslint:disable-next-line: no-unnecessary-generics
|
762 | nthCalledWith<E extends any[]>(nthCall: number, ...params: E): R;
|
763 | /**
|
764 | * Ensure that the nth call to a mock function has returned a specified value.
|
765 | *
|
766 | * Optionally, you can provide a type for the expected value via a generic.
|
767 | * This is particularly useful for ensuring expected objects have the right structure.
|
768 | */
|
769 | // tslint:disable-next-line: no-unnecessary-generics
|
770 | nthReturnedWith<E = any>(n: number, value: E): R;
|
771 | /**
|
772 | * Checks that a value is what you expect. It uses `Object.is` to check strict equality.
|
773 | * Don't use `toBe` with floating-point numbers.
|
774 | *
|
775 | * Optionally, you can provide a type for the expected value via a generic.
|
776 | * This is particularly useful for ensuring expected objects have the right structure.
|
777 | */
|
778 | // tslint:disable-next-line: no-unnecessary-generics
|
779 | toBe<E = any>(expected: E): R;
|
780 | /**
|
781 | * Ensures that a mock function is called.
|
782 | */
|
783 | toBeCalled(): R;
|
784 | /**
|
785 | * Ensures that a mock function is called an exact number of times.
|
786 | */
|
787 | toBeCalledTimes(expected: number): R;
|
788 | /**
|
789 | * Ensure that a mock function is called with specific arguments.
|
790 | *
|
791 | * Optionally, you can provide a type for the expected arguments via a generic.
|
792 | * Note that the type must be either an array or a tuple.
|
793 | */
|
794 | // tslint:disable-next-line: no-unnecessary-generics
|
795 | toBeCalledWith<E extends any[]>(...args: E): R;
|
796 | /**
|
797 | * Using exact equality with floating point numbers is a bad idea.
|
798 | * Rounding means that intuitive things fail.
|
799 | * The default for numDigits is 2.
|
800 | */
|
801 | toBeCloseTo(expected: number, numDigits?: number): R;
|
802 | /**
|
803 | * Ensure that a variable is not undefined.
|
804 | */
|
805 | toBeDefined(): R;
|
806 | /**
|
807 | * When you don't care what a value is, you just want to
|
808 | * ensure a value is false in a boolean context.
|
809 | */
|
810 | toBeFalsy(): R;
|
811 | /**
|
812 | * For comparing floating point or big integer numbers.
|
813 | */
|
814 | toBeGreaterThan(expected: number | bigint): R;
|
815 | /**
|
816 | * For comparing floating point or big integer numbers.
|
817 | */
|
818 | toBeGreaterThanOrEqual(expected: number | bigint): R;
|
819 | /**
|
820 | * Ensure that an object is an instance of a class.
|
821 | * This matcher uses `instanceof` underneath.
|
822 | *
|
823 | * Optionally, you can provide a type for the expected value via a generic.
|
824 | * This is particularly useful for ensuring expected objects have the right structure.
|
825 | */
|
826 | // tslint:disable-next-line: no-unnecessary-generics
|
827 | toBeInstanceOf<E = any>(expected: E): R;
|
828 | /**
|
829 | * For comparing floating point or big integer numbers.
|
830 | */
|
831 | toBeLessThan(expected: number | bigint): R;
|
832 | /**
|
833 | * For comparing floating point or big integer numbers.
|
834 | */
|
835 | toBeLessThanOrEqual(expected: number | bigint): R;
|
836 | /**
|
837 | * This is the same as `.toBe(null)` but the error messages are a bit nicer.
|
838 | * So use `.toBeNull()` when you want to check that something is null.
|
839 | */
|
840 | toBeNull(): R;
|
841 | /**
|
842 | * Use when you don't care what a value is, you just want to ensure a value
|
843 | * is true in a boolean context. In JavaScript, there are six falsy values:
|
844 | * `false`, `0`, `''`, `null`, `undefined`, and `NaN`. Everything else is truthy.
|
845 | */
|
846 | toBeTruthy(): R;
|
847 | /**
|
848 | * Used to check that a variable is undefined.
|
849 | */
|
850 | toBeUndefined(): R;
|
851 | /**
|
852 | * Used to check that a variable is NaN.
|
853 | */
|
854 | toBeNaN(): R;
|
855 | /**
|
856 | * Used when you want to check that an item is in a list.
|
857 | * For testing the items in the list, this uses `===`, a strict equality check.
|
858 | * It can also check whether a string is a substring of another string.
|
859 | *
|
860 | * Optionally, you can provide a type for the expected value via a generic.
|
861 | * This is particularly useful for ensuring expected objects have the right structure.
|
862 | */
|
863 | // tslint:disable-next-line: no-unnecessary-generics
|
864 | toContain<E = any>(expected: E): R;
|
865 | /**
|
866 | * Used when you want to check that an item is in a list.
|
867 | * For testing the items in the list, this matcher recursively checks the
|
868 | * equality of all fields, rather than checking for object identity.
|
869 | *
|
870 | * Optionally, you can provide a type for the expected value via a generic.
|
871 | * This is particularly useful for ensuring expected objects have the right structure.
|
872 | */
|
873 | // tslint:disable-next-line: no-unnecessary-generics
|
874 | toContainEqual<E = any>(expected: E): R;
|
875 | /**
|
876 | * Used when you want to check that two objects have the same value.
|
877 | * This matcher recursively checks the equality of all fields, rather than checking for object identity.
|
878 | *
|
879 | * Optionally, you can provide a type for the expected value via a generic.
|
880 | * This is particularly useful for ensuring expected objects have the right structure.
|
881 | */
|
882 | // tslint:disable-next-line: no-unnecessary-generics
|
883 | toEqual<E = any>(expected: E): R;
|
884 | /**
|
885 | * Ensures that a mock function is called.
|
886 | */
|
887 | toHaveBeenCalled(): R;
|
888 | /**
|
889 | * Ensures that a mock function is called an exact number of times.
|
890 | */
|
891 | toHaveBeenCalledTimes(expected: number): R;
|
892 | /**
|
893 | * Ensure that a mock function is called with specific arguments.
|
894 | *
|
895 | * Optionally, you can provide a type for the expected arguments via a generic.
|
896 | * Note that the type must be either an array or a tuple.
|
897 | */
|
898 | // tslint:disable-next-line: no-unnecessary-generics
|
899 | toHaveBeenCalledWith<E extends any[]>(...params: E): R;
|
900 | /**
|
901 | * Ensure that a mock function is called with specific arguments on an Nth call.
|
902 | *
|
903 | * Optionally, you can provide a type for the expected arguments via a generic.
|
904 | * Note that the type must be either an array or a tuple.
|
905 | */
|
906 | // tslint:disable-next-line: no-unnecessary-generics
|
907 | toHaveBeenNthCalledWith<E extends any[]>(nthCall: number, ...params: E): R;
|
908 | /**
|
909 | * If you have a mock function, you can use `.toHaveBeenLastCalledWith`
|
910 | * to test what arguments it was last called with.
|
911 | *
|
912 | * Optionally, you can provide a type for the expected arguments via a generic.
|
913 | * Note that the type must be either an array or a tuple.
|
914 | */
|
915 | // tslint:disable-next-line: no-unnecessary-generics
|
916 | toHaveBeenLastCalledWith<E extends any[]>(...params: E): R;
|
917 | /**
|
918 | * Use to test the specific value that a mock function last returned.
|
919 | * If the last call to the mock function threw an error, then this matcher will fail
|
920 | * no matter what value you provided as the expected return value.
|
921 | *
|
922 | * Optionally, you can provide a type for the expected value via a generic.
|
923 | * This is particularly useful for ensuring expected objects have the right structure.
|
924 | */
|
925 | // tslint:disable-next-line: no-unnecessary-generics
|
926 | toHaveLastReturnedWith<E = any>(expected: E): R;
|
927 | /**
|
928 | * Used to check that an object has a `.length` property
|
929 | * and it is set to a certain numeric value.
|
930 | */
|
931 | toHaveLength(expected: number): R;
|
932 | /**
|
933 | * Use to test the specific value that a mock function returned for the nth call.
|
934 | * If the nth call to the mock function threw an error, then this matcher will fail
|
935 | * no matter what value you provided as the expected return value.
|
936 | *
|
937 | * Optionally, you can provide a type for the expected value via a generic.
|
938 | * This is particularly useful for ensuring expected objects have the right structure.
|
939 | */
|
940 | // tslint:disable-next-line: no-unnecessary-generics
|
941 | toHaveNthReturnedWith<E = any>(nthCall: number, expected: E): R;
|
942 | /**
|
943 | * Use to check if property at provided reference keyPath exists for an object.
|
944 | * For checking deeply nested properties in an object you may use dot notation or an array containing
|
945 | * the keyPath for deep references.
|
946 | *
|
947 | * Optionally, you can provide a value to check if it's equal to the value present at keyPath
|
948 | * on the target object. This matcher uses 'deep equality' (like `toEqual()`) and recursively checks
|
949 | * the equality of all fields.
|
950 | *
|
951 | * @example
|
952 | *
|
953 | * expect(houseForSale).toHaveProperty('kitchen.area', 20);
|
954 | */
|
955 | // tslint:disable-next-line: no-unnecessary-generics
|
956 | toHaveProperty<E = any>(propertyPath: string | any[], value?: E): R;
|
957 | /**
|
958 | * Use to test that the mock function successfully returned (i.e., did not throw an error) at least one time
|
959 | */
|
960 | toHaveReturned(): R;
|
961 | /**
|
962 | * Use to ensure that a mock function returned successfully (i.e., did not throw an error) an exact number of times.
|
963 | * Any calls to the mock function that throw an error are not counted toward the number of times the function returned.
|
964 | */
|
965 | toHaveReturnedTimes(expected: number): R;
|
966 | /**
|
967 | * Use to ensure that a mock function returned a specific value.
|
968 | *
|
969 | * Optionally, you can provide a type for the expected value via a generic.
|
970 | * This is particularly useful for ensuring expected objects have the right structure.
|
971 | */
|
972 | // tslint:disable-next-line: no-unnecessary-generics
|
973 | toHaveReturnedWith<E = any>(expected: E): R;
|
974 | /**
|
975 | * Check that a string matches a regular expression.
|
976 | */
|
977 | toMatch(expected: string | RegExp): R;
|
978 | /**
|
979 | * Used to check that a JavaScript object matches a subset of the properties of an object
|
980 | *
|
981 | * Optionally, you can provide an object to use as Generic type for the expected value.
|
982 | * This ensures that the matching object matches the structure of the provided object-like type.
|
983 | *
|
984 | * @example
|
985 | *
|
986 | * type House = {
|
987 | * bath: boolean;
|
988 | * bedrooms: number;
|
989 | * kitchen: {
|
990 | * amenities: string[];
|
991 | * area: number;
|
992 | * wallColor: string;
|
993 | * }
|
994 | * };
|
995 | *
|
996 | * expect(desiredHouse).toMatchObject<House>({...standardHouse, kitchen: {area: 20}}) // wherein standardHouse is some base object of type House
|
997 | */
|
998 | // tslint:disable-next-line: no-unnecessary-generics
|
999 | toMatchObject<E extends {} | any[]>(expected: E): R;
|
1000 | /**
|
1001 | * This ensures that a value matches the most recent snapshot with property matchers.
|
1002 | * Check out [the Snapshot Testing guide](http://facebook.github.io/jest/docs/snapshot-testing.html) for more information.
|
1003 | */
|
1004 | // tslint:disable-next-line: no-unnecessary-generics
|
1005 | toMatchSnapshot<U extends { [P in keyof T]: any }>(propertyMatchers: Partial<U>, snapshotName?: string): R;
|
1006 | /**
|
1007 | * This ensures that a value matches the most recent snapshot.
|
1008 | * Check out [the Snapshot Testing guide](http://facebook.github.io/jest/docs/snapshot-testing.html) for more information.
|
1009 | */
|
1010 | toMatchSnapshot(snapshotName?: string): R;
|
1011 | /**
|
1012 | * This ensures that a value matches the most recent snapshot with property matchers.
|
1013 | * Instead of writing the snapshot value to a .snap file, it will be written into the source code automatically.
|
1014 | * Check out [the Snapshot Testing guide](http://facebook.github.io/jest/docs/snapshot-testing.html) for more information.
|
1015 | */
|
1016 | // tslint:disable-next-line: no-unnecessary-generics
|
1017 | toMatchInlineSnapshot<U extends { [P in keyof T]: any }>(propertyMatchers: Partial<U>, snapshot?: string): R;
|
1018 | /**
|
1019 | * This ensures that a value matches the most recent snapshot with property matchers.
|
1020 | * Instead of writing the snapshot value to a .snap file, it will be written into the source code automatically.
|
1021 | * Check out [the Snapshot Testing guide](http://facebook.github.io/jest/docs/snapshot-testing.html) for more information.
|
1022 | */
|
1023 | toMatchInlineSnapshot(snapshot?: string): R;
|
1024 | /**
|
1025 | * Ensure that a mock function has returned (as opposed to thrown) at least once.
|
1026 | */
|
1027 | toReturn(): R;
|
1028 | /**
|
1029 | * Ensure that a mock function has returned (as opposed to thrown) a specified number of times.
|
1030 | */
|
1031 | toReturnTimes(count: number): R;
|
1032 | /**
|
1033 | * Ensure that a mock function has returned a specified value at least once.
|
1034 | *
|
1035 | * Optionally, you can provide a type for the expected value via a generic.
|
1036 | * This is particularly useful for ensuring expected objects have the right structure.
|
1037 | */
|
1038 | // tslint:disable-next-line: no-unnecessary-generics
|
1039 | toReturnWith<E = any>(value: E): R;
|
1040 | /**
|
1041 | * Use to test that objects have the same types as well as structure.
|
1042 | *
|
1043 | * Optionally, you can provide a type for the expected value via a generic.
|
1044 | * This is particularly useful for ensuring expected objects have the right structure.
|
1045 | */
|
1046 | // tslint:disable-next-line: no-unnecessary-generics
|
1047 | toStrictEqual<E = any>(expected: E): R;
|
1048 | /**
|
1049 | * Used to test that a function throws when it is called.
|
1050 | */
|
1051 | toThrow(error?: string | Constructable | RegExp | Error): R;
|
1052 | /**
|
1053 | * If you want to test that a specific error is thrown inside a function.
|
1054 | */
|
1055 | toThrowError(error?: string | Constructable | RegExp | Error): R;
|
1056 | /**
|
1057 | * Used to test that a function throws a error matching the most recent snapshot when it is called.
|
1058 | */
|
1059 | toThrowErrorMatchingSnapshot(snapshotName?: string): R;
|
1060 | /**
|
1061 | * Used to test that a function throws a error matching the most recent snapshot when it is called.
|
1062 | * Instead of writing the snapshot value to a .snap file, it will be written into the source code automatically.
|
1063 | */
|
1064 | toThrowErrorMatchingInlineSnapshot(snapshot?: string): R;
|
1065 | }
|
1066 |
|
1067 | type RemoveFirstFromTuple<T extends any[]> = T['length'] extends 0
|
1068 | ? []
|
1069 | : ((...b: T) => void) extends (a: any, ...b: infer I) => void
|
1070 | ? I
|
1071 | : [];
|
1072 |
|
1073 | interface AsymmetricMatcher {
|
1074 | asymmetricMatch(other: unknown): boolean;
|
1075 | }
|
1076 | type NonAsyncMatchers<TMatchers extends ExpectExtendMap> = {
|
1077 | [K in keyof TMatchers]: ReturnType<TMatchers[K]> extends Promise<CustomMatcherResult> ? never : K;
|
1078 | }[keyof TMatchers];
|
1079 | type CustomAsyncMatchers<TMatchers extends ExpectExtendMap> = {
|
1080 | [K in NonAsyncMatchers<TMatchers>]: CustomAsymmetricMatcher<TMatchers[K]>;
|
1081 | };
|
1082 | type CustomAsymmetricMatcher<TMatcher extends (...args: any[]) => any> = (
|
1083 | ...args: RemoveFirstFromTuple<Parameters<TMatcher>>
|
1084 | ) => AsymmetricMatcher;
|
1085 |
|
1086 | // should be TMatcherReturn extends void|Promise<void> but getting dtslint error
|
1087 | type CustomJestMatcher<TMatcher extends (...args: any[]) => any, TMatcherReturn> = (
|
1088 | ...args: RemoveFirstFromTuple<Parameters<TMatcher>>
|
1089 | ) => TMatcherReturn;
|
1090 |
|
1091 | type ExpectProperties = {
|
1092 | [K in keyof Expect]: Expect[K];
|
1093 | };
|
1094 | // should be TMatcherReturn extends void|Promise<void> but getting dtslint error
|
1095 | // Use the `void` type for return types only. Otherwise, use `undefined`. See: https://github.com/Microsoft/dtslint/blob/master/docs/void-return.md
|
1096 | // have added issue https://github.com/microsoft/dtslint/issues/256 - Cannot have type union containing void ( to be used as return type only
|
1097 | type ExtendedMatchers<TMatchers extends ExpectExtendMap, TMatcherReturn, TActual> = Matchers<
|
1098 | TMatcherReturn,
|
1099 | TActual
|
1100 | > & { [K in keyof TMatchers]: CustomJestMatcher<TMatchers[K], TMatcherReturn> };
|
1101 | type JestExtendedMatchers<TMatchers extends ExpectExtendMap, TActual> = JestMatchersShape<
|
1102 | ExtendedMatchers<TMatchers, void, TActual>,
|
1103 | ExtendedMatchers<TMatchers, Promise<void>, TActual>
|
1104 | >;
|
1105 |
|
1106 | // when have called expect.extend
|
1107 | type ExtendedExpectFunction<TMatchers extends ExpectExtendMap> = <TActual>(
|
1108 | actual: TActual,
|
1109 | ) => JestExtendedMatchers<TMatchers, TActual>;
|
1110 |
|
1111 | type ExtendedExpect<TMatchers extends ExpectExtendMap> = ExpectProperties &
|
1112 | AndNot<CustomAsyncMatchers<TMatchers>> &
|
1113 | ExtendedExpectFunction<TMatchers>;
|
1114 |
|
1115 | type NonPromiseMatchers<T extends JestMatchersShape<any>> = Omit<T, 'resolves' | 'rejects' | 'not'>;
|
1116 | type PromiseMatchers<T extends JestMatchersShape> = Omit<T['resolves'], 'not'>;
|
1117 |
|
1118 | interface Constructable {
|
1119 | new (...args: any[]): any;
|
1120 | }
|
1121 |
|
1122 | interface Mock<T = any, Y extends any[] = any> extends Function, MockInstance<T, Y> {
|
1123 | new (...args: Y): T;
|
1124 | (...args: Y): T;
|
1125 | }
|
1126 |
|
1127 | interface SpyInstance<T = any, Y extends any[] = any> extends MockInstance<T, Y> {}
|
1128 |
|
1129 | /**
|
1130 | * Represents a function that has been spied on.
|
1131 | */
|
1132 | type SpiedFunction<T extends (...args: any[]) => any> = SpyInstance<ReturnType<T>, ArgsType<T>>;
|
1133 |
|
1134 | /**
|
1135 | * Wrap a function with mock definitions
|
1136 | *
|
1137 | * @example
|
1138 | *
|
1139 | * import { myFunction } from "./library";
|
1140 | * jest.mock("./library");
|
1141 | *
|
1142 | * const mockMyFunction = myFunction as jest.MockedFunction<typeof myFunction>;
|
1143 | * expect(mockMyFunction.mock.calls[0][0]).toBe(42);
|
1144 | */
|
1145 | type MockedFunction<T extends (...args: any[]) => any> = MockInstance<ReturnType<T>, ArgsType<T>> & T;
|
1146 |
|
1147 | /**
|
1148 | * Wrap a class with mock definitions
|
1149 | *
|
1150 | * @example
|
1151 | *
|
1152 | * import { MyClass } from "./library";
|
1153 | * jest.mock("./library");
|
1154 | *
|
1155 | * const mockedMyClass = MyClass as jest.MockedClass<typeof MyClass>;
|
1156 | *
|
1157 | * expect(mockedMyClass.mock.calls[0][0]).toBe(42); // Constructor calls
|
1158 | * expect(mockedMyClass.prototype.myMethod.mock.calls[0][0]).toBe(42); // Method calls
|
1159 | */
|
1160 |
|
1161 | type MockedClass<T extends Constructable> = MockInstance<
|
1162 | InstanceType<T>,
|
1163 | T extends new (...args: infer P) => any ? P : never
|
1164 | > & {
|
1165 | prototype: T extends { prototype: any } ? Mocked<T['prototype']> : never;
|
1166 | } & T;
|
1167 |
|
1168 | /**
|
1169 | * Wrap an object or a module with mock definitions
|
1170 | *
|
1171 | * @example
|
1172 | *
|
1173 | * jest.mock("../api");
|
1174 | * import * as api from "../api";
|
1175 | *
|
1176 | * const mockApi = api as jest.Mocked<typeof api>;
|
1177 | * api.MyApi.prototype.myApiMethod.mockImplementation(() => "test");
|
1178 | */
|
1179 | type Mocked<T> = {
|
1180 | [P in keyof T]: T[P] extends (...args: any[]) => any
|
1181 | ? MockInstance<ReturnType<T[P]>, ArgsType<T[P]>>
|
1182 | : T[P] extends Constructable
|
1183 | ? MockedClass<T[P]>
|
1184 | : T[P];
|
1185 | } & T;
|
1186 |
|
1187 | interface MockInstance<T, Y extends any[]> {
|
1188 | /** Returns the mock name string set by calling `mockFn.mockName(value)`. */
|
1189 | getMockName(): string;
|
1190 | /** Provides access to the mock's metadata */
|
1191 | mock: MockContext<T, Y>;
|
1192 | /**
|
1193 | * Resets all information stored in the mockFn.mock.calls and mockFn.mock.instances arrays.
|
1194 | *
|
1195 | * Often this is useful when you want to clean up a mock's usage data between two assertions.
|
1196 | *
|
1197 | * Beware that `mockClear` will replace `mockFn.mock`, not just `mockFn.mock.calls` and `mockFn.mock.instances`.
|
1198 | * You should therefore avoid assigning mockFn.mock to other variables, temporary or not, to make sure you
|
1199 | * don't access stale data.
|
1200 | */
|
1201 | mockClear(): this;
|
1202 | /**
|
1203 | * Resets all information stored in the mock, including any initial implementation and mock name given.
|
1204 | *
|
1205 | * This is useful when you want to completely restore a mock back to its initial state.
|
1206 | *
|
1207 | * Beware that `mockReset` will replace `mockFn.mock`, not just `mockFn.mock.calls` and `mockFn.mock.instances`.
|
1208 | * You should therefore avoid assigning mockFn.mock to other variables, temporary or not, to make sure you
|
1209 | * don't access stale data.
|
1210 | */
|
1211 | mockReset(): this;
|
1212 | /**
|
1213 | * Does everything that `mockFn.mockReset()` does, and also restores the original (non-mocked) implementation.
|
1214 | *
|
1215 | * This is useful when you want to mock functions in certain test cases and restore the original implementation in others.
|
1216 | *
|
1217 | * Beware that `mockFn.mockRestore` only works when mock was created with `jest.spyOn`. Thus you have to take care of restoration
|
1218 | * yourself when manually assigning `jest.fn()`.
|
1219 | *
|
1220 | * The [`restoreMocks`](https://jestjs.io/docs/en/configuration.html#restoremocks-boolean) configuration option is available
|
1221 | * to restore mocks automatically between tests.
|
1222 | */
|
1223 | mockRestore(): void;
|
1224 | /**
|
1225 | * Returns the function that was set as the implementation of the mock (using mockImplementation).
|
1226 | */
|
1227 | getMockImplementation(): ((...args: Y) => T) | undefined;
|
1228 | /**
|
1229 | * Accepts a function that should be used as the implementation of the mock. The mock itself will still record
|
1230 | * all calls that go into and instances that come from itself – the only difference is that the implementation
|
1231 | * will also be executed when the mock is called.
|
1232 | *
|
1233 | * Note: `jest.fn(implementation)` is a shorthand for `jest.fn().mockImplementation(implementation)`.
|
1234 | */
|
1235 | mockImplementation(fn?: (...args: Y) => T): this;
|
1236 | /**
|
1237 | * Accepts a function that will be used as an implementation of the mock for one call to the mocked function.
|
1238 | * Can be chained so that multiple function calls produce different results.
|
1239 | *
|
1240 | * @example
|
1241 | *
|
1242 | * const myMockFn = jest
|
1243 | * .fn()
|
1244 | * .mockImplementationOnce(cb => cb(null, true))
|
1245 | * .mockImplementationOnce(cb => cb(null, false));
|
1246 | *
|
1247 | * myMockFn((err, val) => console.log(val)); // true
|
1248 | *
|
1249 | * myMockFn((err, val) => console.log(val)); // false
|
1250 | */
|
1251 | mockImplementationOnce(fn: (...args: Y) => T): this;
|
1252 | /** Sets the name of the mock`. */
|
1253 | mockName(name: string): this;
|
1254 | /**
|
1255 | * Just a simple sugar function for:
|
1256 | *
|
1257 | * @example
|
1258 | *
|
1259 | * jest.fn(function() {
|
1260 | * return this;
|
1261 | * });
|
1262 | */
|
1263 | mockReturnThis(): this;
|
1264 | /**
|
1265 | * Accepts a value that will be returned whenever the mock function is called.
|
1266 | *
|
1267 | * @example
|
1268 | *
|
1269 | * const mock = jest.fn();
|
1270 | * mock.mockReturnValue(42);
|
1271 | * mock(); // 42
|
1272 | * mock.mockReturnValue(43);
|
1273 | * mock(); // 43
|
1274 | */
|
1275 | mockReturnValue(value: T): this;
|
1276 | /**
|
1277 | * Accepts a value that will be returned for one call to the mock function. Can be chained so that
|
1278 | * successive calls to the mock function return different values. When there are no more
|
1279 | * `mockReturnValueOnce` values to use, calls will return a value specified by `mockReturnValue`.
|
1280 | *
|
1281 | * @example
|
1282 | *
|
1283 | * const myMockFn = jest.fn()
|
1284 | * .mockReturnValue('default')
|
1285 | * .mockReturnValueOnce('first call')
|
1286 | * .mockReturnValueOnce('second call');
|
1287 | *
|
1288 | * // 'first call', 'second call', 'default', 'default'
|
1289 | * console.log(myMockFn(), myMockFn(), myMockFn(), myMockFn());
|
1290 | *
|
1291 | */
|
1292 | mockReturnValueOnce(value: T): this;
|
1293 | /**
|
1294 | * Simple sugar function for: `jest.fn().mockImplementation(() => Promise.resolve(value));`
|
1295 | */
|
1296 | mockResolvedValue(value: ResolvedValue<T>): this;
|
1297 | /**
|
1298 | * Simple sugar function for: `jest.fn().mockImplementationOnce(() => Promise.resolve(value));`
|
1299 | *
|
1300 | * @example
|
1301 | *
|
1302 | * test('async test', async () => {
|
1303 | * const asyncMock = jest
|
1304 | * .fn()
|
1305 | * .mockResolvedValue('default')
|
1306 | * .mockResolvedValueOnce('first call')
|
1307 | * .mockResolvedValueOnce('second call');
|
1308 | *
|
1309 | * await asyncMock(); // first call
|
1310 | * await asyncMock(); // second call
|
1311 | * await asyncMock(); // default
|
1312 | * await asyncMock(); // default
|
1313 | * });
|
1314 | *
|
1315 | */
|
1316 | mockResolvedValueOnce(value: ResolvedValue<T>): this;
|
1317 | /**
|
1318 | * Simple sugar function for: `jest.fn().mockImplementation(() => Promise.reject(value));`
|
1319 | *
|
1320 | * @example
|
1321 | *
|
1322 | * test('async test', async () => {
|
1323 | * const asyncMock = jest.fn().mockRejectedValue(new Error('Async error'));
|
1324 | *
|
1325 | * await asyncMock(); // throws "Async error"
|
1326 | * });
|
1327 | */
|
1328 | mockRejectedValue(value: RejectedValue<T>): this;
|
1329 |
|
1330 | /**
|
1331 | * Simple sugar function for: `jest.fn().mockImplementationOnce(() => Promise.reject(value));`
|
1332 | *
|
1333 | * @example
|
1334 | *
|
1335 | * test('async test', async () => {
|
1336 | * const asyncMock = jest
|
1337 | * .fn()
|
1338 | * .mockResolvedValueOnce('first call')
|
1339 | * .mockRejectedValueOnce(new Error('Async error'));
|
1340 | *
|
1341 | * await asyncMock(); // first call
|
1342 | * await asyncMock(); // throws "Async error"
|
1343 | * });
|
1344 | *
|
1345 | */
|
1346 | mockRejectedValueOnce(value: RejectedValue<T>): this;
|
1347 | }
|
1348 |
|
1349 | /**
|
1350 | * Represents the result of a single call to a mock function with a return value.
|
1351 | */
|
1352 | interface MockResultReturn<T> {
|
1353 | type: 'return';
|
1354 | value: T;
|
1355 | }
|
1356 | /**
|
1357 | * Represents the result of a single incomplete call to a mock function.
|
1358 | */
|
1359 | interface MockResultIncomplete {
|
1360 | type: 'incomplete';
|
1361 | value: undefined;
|
1362 | }
|
1363 | /**
|
1364 | * Represents the result of a single call to a mock function with a thrown error.
|
1365 | */
|
1366 | interface MockResultThrow {
|
1367 | type: 'throw';
|
1368 | value: any;
|
1369 | }
|
1370 |
|
1371 | type MockResult<T> = MockResultReturn<T> | MockResultThrow | MockResultIncomplete;
|
1372 |
|
1373 | interface MockContext<T, Y extends any[]> {
|
1374 | /**
|
1375 | * List of the call arguments of all calls that have been made to the mock.
|
1376 | */
|
1377 | calls: Y[];
|
1378 | /**
|
1379 | * List of all the object instances that have been instantiated from the mock.
|
1380 | */
|
1381 | instances: T[];
|
1382 | /**
|
1383 | * List of the call order indexes of the mock. Jest is indexing the order of
|
1384 | * invocations of all mocks in a test file. The index is starting with `1`.
|
1385 | */
|
1386 | invocationCallOrder: number[];
|
1387 | /**
|
1388 | * List of the call arguments of the last call that was made to the mock.
|
1389 | * If the function was not called, it will return `undefined`.
|
1390 | */
|
1391 | lastCall?: Y;
|
1392 | /**
|
1393 | * List of the results of all calls that have been made to the mock.
|
1394 | */
|
1395 | results: Array<MockResult<T>>;
|
1396 | }
|
1397 | }
|
1398 |
|
1399 | // Jest ships with a copy of Jasmine. They monkey-patch its APIs and divergence/deprecation are expected.
|
1400 | // Relevant parts of Jasmine's API are below so they can be changed and removed over time.
|
1401 | // This file can't reference jasmine.d.ts since the globals aren't compatible.
|
1402 |
|
1403 | declare function spyOn<T>(object: T, method: keyof T): jasmine.Spy;
|
1404 | /**
|
1405 | * If you call the function pending anywhere in the spec body,
|
1406 | * no matter the expectations, the spec will be marked pending.
|
1407 | */
|
1408 | declare function pending(reason?: string): void;
|
1409 | /**
|
1410 | * Fails a test when called within one.
|
1411 | */
|
1412 | declare function fail(error?: any): never;
|
1413 | declare namespace jasmine {
|
1414 | let DEFAULT_TIMEOUT_INTERVAL: number;
|
1415 | function clock(): Clock;
|
1416 | function any(aclass: any): Any;
|
1417 | function anything(): Any;
|
1418 | function arrayContaining(sample: any[]): ArrayContaining;
|
1419 | function objectContaining(sample: any): ObjectContaining;
|
1420 | function createSpy(name?: string, originalFn?: (...args: any[]) => any): Spy;
|
1421 | function createSpyObj(baseName: string, methodNames: any[]): any;
|
1422 | // tslint:disable-next-line: no-unnecessary-generics
|
1423 | function createSpyObj<T>(baseName: string, methodNames: any[]): T;
|
1424 | function pp(value: any): string;
|
1425 | function addCustomEqualityTester(equalityTester: CustomEqualityTester): void;
|
1426 | function stringMatching(value: string | RegExp): Any;
|
1427 |
|
1428 | interface Clock {
|
1429 | install(): void;
|
1430 | uninstall(): void;
|
1431 | /**
|
1432 | * Calls to any registered callback are triggered when the clock isticked forward
|
1433 | * via the jasmine.clock().tick function, which takes a number of milliseconds.
|
1434 | */
|
1435 | tick(ms: number): void;
|
1436 | mockDate(date?: Date): void;
|
1437 | }
|
1438 |
|
1439 | interface Any {
|
1440 | new (expectedClass: any): any;
|
1441 | jasmineMatches(other: any): boolean;
|
1442 | jasmineToString(): string;
|
1443 | }
|
1444 |
|
1445 | interface ArrayContaining {
|
1446 | new (sample: any[]): any;
|
1447 | asymmetricMatch(other: any): boolean;
|
1448 | jasmineToString(): string;
|
1449 | }
|
1450 |
|
1451 | interface ObjectContaining {
|
1452 | new (sample: any): any;
|
1453 | jasmineMatches(other: any, mismatchKeys: any[], mismatchValues: any[]): boolean;
|
1454 | jasmineToString(): string;
|
1455 | }
|
1456 |
|
1457 | interface Spy {
|
1458 | (...params: any[]): any;
|
1459 | identity: string;
|
1460 | and: SpyAnd;
|
1461 | calls: Calls;
|
1462 | mostRecentCall: { args: any[] };
|
1463 | argsForCall: any[];
|
1464 | wasCalled: boolean;
|
1465 | }
|
1466 |
|
1467 | interface SpyAnd {
|
1468 | /**
|
1469 | * By chaining the spy with and.callThrough, the spy will still track all
|
1470 | * calls to it but in addition it will delegate to the actual implementation.
|
1471 | */
|
1472 | callThrough(): Spy;
|
1473 | /**
|
1474 | * By chaining the spy with and.returnValue, all calls to the function
|
1475 | * will return a specific value.
|
1476 | */
|
1477 | returnValue(val: any): Spy;
|
1478 | /**
|
1479 | * By chaining the spy with and.returnValues, all calls to the function
|
1480 | * will return specific values in order until it reaches the end of the return values list.
|
1481 | */
|
1482 | returnValues(...values: any[]): Spy;
|
1483 | /**
|
1484 | * By chaining the spy with and.callFake, all calls to the spy
|
1485 | * will delegate to the supplied function.
|
1486 | */
|
1487 | callFake(fn: (...args: any[]) => any): Spy;
|
1488 | /**
|
1489 | * By chaining the spy with and.throwError, all calls to the spy
|
1490 | * will throw the specified value.
|
1491 | */
|
1492 | throwError(msg: string): Spy;
|
1493 | /**
|
1494 | * When a calling strategy is used for a spy, the original stubbing
|
1495 | * behavior can be returned at any time with and.stub.
|
1496 | */
|
1497 | stub(): Spy;
|
1498 | }
|
1499 |
|
1500 | interface Calls {
|
1501 | /**
|
1502 | * By chaining the spy with calls.any(),
|
1503 | * will return false if the spy has not been called at all,
|
1504 | * and then true once at least one call happens.
|
1505 | */
|
1506 | any(): boolean;
|
1507 | /**
|
1508 | * By chaining the spy with calls.count(),
|
1509 | * will return the number of times the spy was called
|
1510 | */
|
1511 | count(): number;
|
1512 | /**
|
1513 | * By chaining the spy with calls.argsFor(),
|
1514 | * will return the arguments passed to call number index
|
1515 | */
|
1516 | argsFor(index: number): any[];
|
1517 | /**
|
1518 | * By chaining the spy with calls.allArgs(),
|
1519 | * will return the arguments to all calls
|
1520 | */
|
1521 | allArgs(): any[];
|
1522 | /**
|
1523 | * By chaining the spy with calls.all(), will return the
|
1524 | * context (the this) and arguments passed all calls
|
1525 | */
|
1526 | all(): CallInfo[];
|
1527 | /**
|
1528 | * By chaining the spy with calls.mostRecent(), will return the
|
1529 | * context (the this) and arguments for the most recent call
|
1530 | */
|
1531 | mostRecent(): CallInfo;
|
1532 | /**
|
1533 | * By chaining the spy with calls.first(), will return the
|
1534 | * context (the this) and arguments for the first call
|
1535 | */
|
1536 | first(): CallInfo;
|
1537 | /**
|
1538 | * By chaining the spy with calls.reset(), will clears all tracking for a spy
|
1539 | */
|
1540 | reset(): void;
|
1541 | }
|
1542 |
|
1543 | interface CallInfo {
|
1544 | /**
|
1545 | * The context (the this) for the call
|
1546 | */
|
1547 | object: any;
|
1548 | /**
|
1549 | * All arguments passed to the call
|
1550 | */
|
1551 | args: any[];
|
1552 | /**
|
1553 | * The return value of the call
|
1554 | */
|
1555 | returnValue: any;
|
1556 | }
|
1557 |
|
1558 | interface CustomMatcherFactories {
|
1559 | [index: string]: CustomMatcherFactory;
|
1560 | }
|
1561 |
|
1562 | type CustomMatcherFactory = (util: MatchersUtil, customEqualityTesters: CustomEqualityTester[]) => CustomMatcher;
|
1563 |
|
1564 | interface MatchersUtil {
|
1565 | equals(a: any, b: any, customTesters?: CustomEqualityTester[]): boolean;
|
1566 | // tslint:disable-next-line: no-unnecessary-generics
|
1567 | contains<T>(haystack: ArrayLike<T> | string, needle: any, customTesters?: CustomEqualityTester[]): boolean;
|
1568 | buildFailureMessage(matcherName: string, isNot: boolean, actual: any, ...expected: any[]): string;
|
1569 | }
|
1570 |
|
1571 | type CustomEqualityTester = (first: any, second: any) => boolean;
|
1572 |
|
1573 | interface CustomMatcher {
|
1574 | compare<T>(actual: T, expected: T, ...args: any[]): CustomMatcherResult;
|
1575 | compare(actual: any, ...expected: any[]): CustomMatcherResult;
|
1576 | }
|
1577 |
|
1578 | interface CustomMatcherResult {
|
1579 | pass: boolean;
|
1580 | message: string | (() => string);
|
1581 | }
|
1582 |
|
1583 | interface ArrayLike<T> {
|
1584 | length: number;
|
1585 | [n: number]: T;
|
1586 | }
|
1587 | }
|
1588 |
|
1589 | interface ImportMeta {
|
1590 | jest: typeof jest;
|
1591 | }
|
1592 |
|
\ | No newline at end of file |