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{ Notification, Observable, Subscription } from 'rxjs';\nimport { TestScheduler } from 'rxjs/testing';\nimport { isEqual } from 'lodash';\n\nimport {\n getTestScheduler,\n initTestScheduler,\n resetTestScheduler,\n} from './src/scheduler';\nimport {\n TestColdObservable,\n TestHotObservable,\n TestObservable,\n} from './src/test-observables';\nimport { unparseMarble } from './src/marble-unparser';\nimport { mapSymbolsToNotifications } from './src/map-symbols-to-notifications';\nimport { TestMessages } from './src/types';\n\nexport {\n getTestScheduler,\n initTestScheduler,\n resetTestScheduler,\n} from './src/scheduler';\n\nexport function hot(\n marbles: string,\n values?: any,\n error?: any,\n): TestHotObservable {\n return new TestHotObservable(marbles.trim(), values, error);\n}\n\nexport function cold(\n marbles: string,\n values?: any,\n error?: any,\n): TestColdObservable {\n return new TestColdObservable(marbles.trim(), values, error);\n}\n\nexport function time(marbles: string): number {\n return getTestScheduler().createTime(marbles.trim());\n}\n\ndeclare global {\n namespace jasmine {\n interface Matchers<T> {\n toBeObservable(expected: TestObservable): boolean;\n toHaveSubscriptions(marbles: string | string[]): boolean;\n }\n }\n namespace jest {\n interface Matchers<R> {\n toBeObservable(expected: TestObservable): R;\n toHaveSubscriptions(marbles: string | string[]): R;\n }\n }\n}\n\n/*\n * Based on source code found in rxjs library\n * https://github.com/ReactiveX/rxjs/blob/master/src/testing/TestScheduler.ts\n *\n */\nfunction materializeInnerObservable(\n observable: Observable<any>,\n outerFrame: number,\n): TestMessages {\n const messages: TestMessages = [];\n const scheduler = getTestScheduler();\n\n observable.subscribe(\n (value) => {\n messages.push({\n frame: scheduler.frame - outerFrame,\n notification: Notification.createNext(value),\n });\n },\n (err) => {\n messages.push({\n frame: scheduler.frame - outerFrame,\n notification: Notification.createError(err),\n });\n },\n () => {\n messages.push({\n frame: scheduler.frame - outerFrame,\n notification: Notification.createComplete(),\n });\n },\n );\n return messages;\n}\n\nconst toHaveSubscriptionsComparer = function (\n actual: TestObservable,\n marbles: string | string[],\n) {\n const marblesArray: string[] =\n typeof marbles === 'string' ? [marbles] : marbles;\n const results = marblesArray.map((marbles) =>\n TestScheduler.parseMarblesAsSubscriptions(marbles),\n );\n\n expect(results).toEqual(actual.getSubscriptions());\n\n return { pass: true, message: () => '' };\n};\n\nconst toBeObservableComparer = function (\n actual: TestObservable,\n fixture: TestObservable,\n) {\n const results: TestMessages = [];\n let subscription: Subscription;\n const scheduler = getTestScheduler();\n\n scheduler.schedule(() => {\n subscription = actual.subscribe(\n (x: any) => {\n let value = x;\n\n // Support Observable-of-Observables\n if (x instanceof Observable) {\n value = materializeInnerObservable(value, scheduler.frame);\n }\n\n results.push({\n frame: scheduler.frame,\n notification: Notification.createNext(value),\n });\n },\n (err: any) => {\n results.push({\n frame: scheduler.frame,\n notification: Notification.createError(err),\n });\n },\n () => {\n results.push({\n frame: scheduler.frame,\n notification: Notification.createComplete(),\n });\n },\n );\n });\n scheduler.flush();\n\n const expected = TestScheduler.parseMarbles(\n fixture.marbles,\n fixture.values,\n fixture.error,\n true,\n true,\n );\n\n try {\n expect(results).toEqual(expected);\n\n return { pass: true, message: () => '' };\n } catch (e) {\n const mapNotificationToSymbol = buildNotificationToSymbolMapper(\n fixture.marbles,\n expected,\n isEqual,\n );\n const receivedMarble = unparseMarble(results, mapNotificationToSymbol);\n\n const message = formatMessage(\n fixture.marbles,\n expected,\n receivedMarble,\n results,\n );\n\n return { pass: false, message: () => message };\n }\n};\n\nexport function addMatchers() {\n if (!(<any>expect).extend) {\n jasmine.addMatchers({\n toHaveSubscriptions: () => ({\n compare: toHaveSubscriptionsComparer,\n }),\n toBeObservable: (utils, equalityTester) => ({\n compare: toBeObservableComparer,\n }),\n });\n } else {\n (<any>expect).extend({\n toHaveSubscriptions: toHaveSubscriptionsComparer,\n toBeObservable: toBeObservableComparer,\n });\n }\n}\n\nfunction buildNotificationToSymbolMapper(\n expectedMarbles: string,\n expectedMessages: TestMessages,\n equalityFn: (a: any, b: any) => boolean,\n) {\n const symbolsToNotificationsMap = mapSymbolsToNotifications(\n expectedMarbles,\n expectedMessages,\n );\n return (notification: Notification<any>) => {\n const mapped = Object.keys(symbolsToNotificationsMap).find((key) => {\n return equalityFn(symbolsToNotificationsMap[key], notification);\n })!;\n\n return mapped || '?';\n };\n}\n\nfunction formatMessage(\n expectedMarbles: string,\n expectedMessages: TestMessages,\n receivedMarbles: string,\n receivedMessages: TestMessages,\n) {\n return `\n Expected: ${expectedMarbles},\n Received: ${receivedMarbles},\n \n Expected:\n ${JSON.stringify(expectedMessages)}\n \n Received:\n ${JSON.stringify(receivedMessages)},\n `;\n}\n\nexport function setupEnvironment() {\n beforeAll(() => addMatchers());\n\n beforeEach(() => initTestScheduler());\n afterEach(() => {\n getTestScheduler().flush();\n resetTestScheduler();\n });\n}\n\nsetupEnvironment();\n"]} |