extensions/test/data/data_receiver_unittest.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // Tests launched by extensions/renderer/api/serial/data_receiver_unittest.cc
   6
   7 var test = require('test').binding;
   8 var unittestBindings = require('test_environment_specific_bindings');
   9
  10 var BUFFER_SIZE = 10;
  11 var FATAL_ERROR = 2;
  12
  13 // Returns a promise to a newly created DataReceiver.
  14 function createReceiver() {
  15   return Promise.all([
  16     requireAsync('data_receiver'),
  17     requireAsync('device/serial/data_receiver_test_factory'),
  18   ]).then(function(modules) {
  19     var dataReceiver = modules[0];
  20     var factory = modules[1];
  21     var receiver = factory.create();
  22     return new dataReceiver.DataReceiver(receiver.source, receiver.client,
  23                                          BUFFER_SIZE, FATAL_ERROR);
  24   });
  25 }
  26
  27 // Returns a promise that will resolve to |receiver| when it has received an
  28 // error from its DataSource.
  29 function waitForReceiveError(receiver) {
  30   return new Promise(function(resolve, reject) {
  31     var onError = receiver.onError;
  32     receiver.onError = function() {
  33       $Function.apply(onError, receiver, arguments);
  34       resolve(receiver);
  35     };
  36   });
  37 }
  38
  39 // Returns a function that receives data from a provided DataReceiver
  40 // |receiver|, checks that it matches the expected data and returns a promise
  41 // that will resolve to |receiver|.
  42 function receiveAndCheckData(expectedData) {
  43   return function(receiver) {
  44     return receiver.receive().then(function(data) {
  45       test.assertEq(expectedData.length, data.byteLength);
  46       for (var i = 0; i < expectedData.length; i++)
  47         test.assertEq(expectedData.charCodeAt(i), new Int8Array(data)[i]);
  48       return receiver;
  49     });
  50     test.assertThrows(
  51         receiver.receive, receiver, [], 'Receive already in progress.');
  52   };
  53 }
  54
  55 // Returns a function that attempts to receive data from a provided DataReceiver
  56 // |receiver|, checks that the correct error is reported and returns a promise
  57 // that will resolve to |receiver|.
  58 function receiveAndCheckError(expectedError) {
  59   return function(receiver) {
  60     return receiver.receive().catch(function(error) {
  61       test.assertEq(expectedError, error.error);
  62       return receiver;
  63     });
  64     test.assertThrows(
  65         receiver.receive, receiver, [], 'Receive already in progress.');
  66   };
  67 }
  68
  69 // Serializes and deserializes the provided DataReceiver |receiver|, returning
  70 // a promise that will resolve to the newly deserialized DataReceiver.
  71 function serializeRoundTrip(receiver) {
  72   return Promise.all([
  73     receiver.serialize(),
  74     requireAsync('data_receiver'),
  75   ]).then(function(promises) {
  76     var serialized = promises[0];
  77     var dataReceiverModule = promises[1];
  78     return dataReceiverModule.DataReceiver.deserialize(serialized);
  79   });
  80 }
  81
  82 // Closes and returns the provided DataReceiver |receiver|.
  83 function closeReceiver(receiver) {
  84   receiver.close();
  85   return receiver;
  86 }
  87
  88 unittestBindings.exportTests([
  89   function testReceive() {
  90     createReceiver()
  91         .then(receiveAndCheckData('a'))
  92         .then(closeReceiver)
  93         .then(test.succeed, test.fail);
  94   },
  95
  96   function testReceiveError() {
  97     createReceiver()
  98         .then(receiveAndCheckError(1))
  99         .then(closeReceiver)
 100         .then(test.succeed, test.fail);
 101   },
 102
 103   function testReceiveDataAndError() {
 104     createReceiver()
 105         .then(receiveAndCheckData('a'))
 106         .then(receiveAndCheckError(1))
 107         .then(receiveAndCheckData('b'))
 108         .then(closeReceiver)
 109         .then(test.succeed, test.fail);
 110   },
 111
 112   function testReceiveErrorThenData() {
 113     createReceiver()
 114         .then(receiveAndCheckError(1))
 115         .then(receiveAndCheckData('a'))
 116         .then(closeReceiver)
 117         .then(test.succeed, test.fail);
 118   },
 119
 120   function testReceiveBeforeAndAfterSerialization() {
 121     createReceiver()
 122         .then(receiveAndCheckData('a'))
 123         .then(serializeRoundTrip)
 124         .then(receiveAndCheckData('b'))
 125         .then(closeReceiver)
 126         .then(test.succeed, test.fail);
 127   },
 128
 129   function testReceiveErrorSerialization() {
 130     createReceiver()
 131         .then(waitForReceiveError)
 132         .then(serializeRoundTrip)
 133         .then(receiveAndCheckError(1))
 134         .then(receiveAndCheckError(3))
 135         .then(closeReceiver)
 136         .then(test.succeed, test.fail);
 137   },
 138
 139   function testReceiveDataAndErrorSerialization() {
 140     createReceiver()
 141         .then(waitForReceiveError)
 142         .then(receiveAndCheckData('a'))
 143         .then(serializeRoundTrip)
 144         .then(receiveAndCheckError(1))
 145         .then(receiveAndCheckData('b'))
 146         .then(receiveAndCheckError(3))
 147         .then(closeReceiver)
 148         .then(test.succeed, test.fail);
 149   },
 150
 151   function testSerializeDuringReceive() {
 152     var receiver = createReceiver();
 153     Promise.all([
 154         receiver.then(receiveAndCheckError(FATAL_ERROR)),
 155         receiver
 156             .then(serializeRoundTrip)
 157             .then(receiveAndCheckData('a'))
 158             .then(closeReceiver)
 159     ]).then(test.succeed, test.fail);
 160   },
 161
 162   function testSerializeAfterClose() {
 163     function receiveAfterClose(receiver) {
 164       test.assertThrows(
 165           receiver.receive, receiver, [], 'DataReceiver has been closed');
 166     }
 167
 168     createReceiver()
 169         .then(closeReceiver)
 170         .then(serializeRoundTrip)
 171         .then(receiveAfterClose)
 172         .then(test.succeed, test.fail);
 173   },
 174
 175 ], test.runTests, exports);