1 | var tape = require('tape')
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2 | var through = require('through2')
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3 | var concat = require('concat-stream')
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4 | var net = require('net')
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5 | var duplexify = require('./')
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6 |
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7 | tape('passthrough', function(t) {
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8 | t.plan(2)
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9 |
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10 | var pt = through()
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11 | var dup = duplexify(pt, pt)
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12 |
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13 | dup.end('hello world')
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14 | dup.on('finish', function() {
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15 | t.ok(true, 'should finish')
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16 | })
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17 | dup.pipe(concat(function(data) {
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18 | t.same(data.toString(), 'hello world', 'same in as out')
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19 | }))
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20 | })
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21 |
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22 | tape('passthrough + double end', function(t) {
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23 | t.plan(2)
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24 |
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25 | var pt = through()
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26 | var dup = duplexify(pt, pt)
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27 |
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28 | dup.end('hello world')
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29 | dup.end()
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30 |
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31 | dup.on('finish', function() {
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32 | t.ok(true, 'should finish')
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33 | })
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34 | dup.pipe(concat(function(data) {
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35 | t.same(data.toString(), 'hello world', 'same in as out')
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36 | }))
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37 | })
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38 |
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39 | tape('async passthrough + end', function(t) {
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40 | t.plan(2)
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41 |
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42 | var pt = through.obj({highWaterMark:1}, function(data, enc, cb) {
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43 | setTimeout(function() {
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44 | cb(null, data)
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45 | }, 100)
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46 | })
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47 |
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48 | var dup = duplexify(pt, pt)
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49 |
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50 | dup.write('hello ')
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51 | dup.write('world')
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52 | dup.end()
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53 |
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54 | dup.on('finish', function() {
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55 | t.ok(true, 'should finish')
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56 | })
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57 | dup.pipe(concat(function(data) {
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58 | t.same(data.toString(), 'hello world', 'same in as out')
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59 | }))
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60 | })
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61 |
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62 | tape('duplex', function(t) {
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63 | var readExpected = ['read-a', 'read-b', 'read-c']
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64 | var writeExpected = ['write-a', 'write-b', 'write-c']
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65 |
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66 | t.plan(readExpected.length+writeExpected.length+2)
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67 |
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68 | var readable = through.obj()
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69 | var writable = through.obj(function(data, enc, cb) {
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70 | t.same(data, writeExpected.shift(), 'onwrite should match')
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71 | cb()
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72 | })
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73 |
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74 | var dup = duplexify.obj(writable, readable)
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75 |
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76 | readExpected.slice().forEach(function(data) {
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77 | readable.write(data)
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78 | })
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79 | readable.end()
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80 |
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81 | writeExpected.slice().forEach(function(data) {
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82 | dup.write(data)
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83 | })
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84 | dup.end()
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85 |
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86 | dup.on('data', function(data) {
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87 | t.same(data, readExpected.shift(), 'ondata should match')
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88 | })
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89 | dup.on('end', function() {
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90 | t.ok(true, 'should end')
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91 | })
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92 | dup.on('finish', function() {
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93 | t.ok(true, 'should finish')
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94 | })
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95 | })
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96 |
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97 | tape('async', function(t) {
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98 | var dup = duplexify()
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99 | var pt = through()
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100 |
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101 | dup.pipe(concat(function(data) {
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102 | t.same(data.toString(), 'i was async', 'same in as out')
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103 | t.end()
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104 | }))
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105 |
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106 | dup.write('i')
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107 | dup.write(' was ')
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108 | dup.end('async')
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109 |
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110 | setTimeout(function() {
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111 | dup.setWritable(pt)
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112 | setTimeout(function() {
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113 | dup.setReadable(pt)
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114 | }, 50)
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115 | }, 50)
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116 | })
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117 |
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118 | tape('destroy', function(t) {
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119 | t.plan(2)
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120 |
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121 | var write = through()
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122 | var read = through()
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123 | var dup = duplexify(write, read)
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124 |
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125 | write.destroy = function() {
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126 | t.ok(true, 'write destroyed')
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127 | }
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128 |
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129 | dup.on('close', function() {
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130 | t.ok(true, 'close emitted')
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131 | })
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132 |
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133 | dup.destroy()
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134 | dup.destroy()
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135 | })
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136 |
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137 | tape('destroy both', function(t) {
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138 | t.plan(3)
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139 |
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140 | var write = through()
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141 | var read = through()
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142 | var dup = duplexify(write, read)
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143 |
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144 | write.destroy = function() {
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145 | t.ok(true, 'write destroyed')
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146 | }
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147 |
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148 | read.destroy = function() {
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149 | t.ok(true, 'read destroyed')
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150 | }
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151 |
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152 | dup.on('close', function() {
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153 | t.ok(true, 'close emitted')
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154 | })
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155 |
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156 | dup.destroy()
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157 | dup.destroy()
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158 | })
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159 |
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160 | tape('bubble read errors', function(t) {
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161 | t.plan(2)
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162 |
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163 | var write = through()
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164 | var read = through()
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165 | var dup = duplexify(write, read)
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166 |
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167 | dup.on('error', function(err) {
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168 | t.same(err.message, 'read-error', 'received read error')
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169 | })
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170 | dup.on('close', function() {
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171 | t.ok(true, 'close emitted')
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172 | })
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173 |
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174 | read.emit('error', new Error('read-error'))
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175 | write.emit('error', new Error('write-error'))
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176 | })
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177 |
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178 | tape('bubble write errors', function(t) {
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179 | t.plan(2)
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180 |
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181 | var write = through()
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182 | var read = through()
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183 | var dup = duplexify(write, read)
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184 |
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185 | dup.on('error', function(err) {
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186 | t.same(err.message, 'write-error', 'received write error')
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187 | })
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188 | dup.on('close', function() {
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189 | t.ok(true, 'close emitted')
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190 | })
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191 |
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192 | write.emit('error', new Error('write-error'))
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193 | read.emit('error', new Error('read-error'))
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194 | })
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195 |
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196 | tape('reset writable / readable', function(t) {
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197 | t.plan(3)
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198 |
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199 | var toUpperCase = function(data, enc, cb) {
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200 | cb(null, data.toString().toUpperCase())
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201 | }
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202 |
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203 | var passthrough = through()
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204 | var upper = through(toUpperCase)
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205 | var dup = duplexify(passthrough, passthrough)
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206 |
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207 | dup.once('data', function(data) {
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208 | t.same(data.toString(), 'hello')
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209 | dup.setWritable(upper)
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210 | dup.setReadable(upper)
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211 | dup.once('data', function(data) {
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212 | t.same(data.toString(), 'HELLO')
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213 | dup.once('data', function(data) {
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214 | t.same(data.toString(), 'HI')
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215 | t.end()
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216 | })
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217 | })
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218 | dup.write('hello')
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219 | dup.write('hi')
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220 | })
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221 | dup.write('hello')
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222 | })
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223 |
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224 | tape('cork', function(t) {
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225 | var passthrough = through()
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226 | var dup = duplexify(passthrough, passthrough)
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227 | var ok = false
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228 |
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229 | dup.on('prefinish', function() {
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230 | dup.cork()
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231 | setTimeout(function() {
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232 | ok = true
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233 | dup.uncork()
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234 | }, 100)
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235 | })
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236 | dup.on('finish', function() {
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237 | t.ok(ok)
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238 | t.end()
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239 | })
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240 | dup.end()
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241 | })
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242 |
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243 | tape('prefinish not twice', function(t) {
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244 | var passthrough = through()
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245 | var dup = duplexify(passthrough, passthrough)
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246 | var prefinished = false
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247 |
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248 | dup.on('prefinish', function() {
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249 | t.ok(!prefinished, 'only prefinish once')
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250 | prefinished = true
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251 | })
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252 |
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253 | dup.on('finish', function() {
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254 | t.end()
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255 | })
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256 |
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257 | dup.end()
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258 | })
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259 |
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260 | tape('close', function(t) {
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261 | var passthrough = through()
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262 | var dup = duplexify(passthrough, passthrough)
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263 |
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264 | passthrough.emit('close')
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265 | dup.on('close', function() {
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266 | t.ok(true, 'should forward close')
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267 | t.end()
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268 | })
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269 | })
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270 |
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271 | tape('works with node native streams (net)', function(t) {
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272 | t.plan(1)
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273 |
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274 | var server = net.createServer(function(socket) {
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275 | var dup = duplexify(socket, socket)
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276 |
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277 | dup.once('data', function(chunk) {
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278 | t.same(chunk, Buffer('hello world'))
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279 | server.close()
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280 | socket.end()
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281 | t.end()
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282 | })
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283 | })
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284 |
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285 | server.listen(0, function () {
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286 | var socket = net.connect(server.address().port)
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287 | var dup = duplexify(socket, socket)
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288 |
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289 | dup.write(Buffer('hello world'))
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290 | })
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291 | })
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