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('content/public/renderer/service_provider'),
  17     requireAsync('data_receiver'),
  18     requireAsync('device/serial/data_stream.mojom'),
  19   ]).then(function(modules) {
  20     var serviceProvider = modules[0];
  21     var dataReceiver = modules[1];
  22     var dataStream = modules[2];
  23     return new dataReceiver.DataReceiver(
  24         serviceProvider.connectToService(dataStream.DataSource.name),
  25         BUFFER_SIZE,
  26         FATAL_ERROR);
  27   });
  28 }
  29
  30 // Returns a promise that will resolve to |receiver| when it has received an
  31 // error from its DataSource.
  32 function waitForReceiveError(receiver) {
  33   return new Promise(function(resolve, reject) {
  34     var onError = receiver.onError;
  35     receiver.onError = function() {
  36       $Function.apply(onError, receiver, arguments);
  37       resolve(receiver);
  38     };
  39   });
  40 }
  41
  42 // Returns a function that receives data from a provided DataReceiver
  43 // |receiver|, checks that it matches the expected data and returns a promise
  44 // that will resolve to |receiver|.
  45 function receiveAndCheckData(expectedData) {
  46   return function(receiver) {
  47     return receiver.receive().then(function(data) {
  48       test.assertEq(expectedData.length, data.byteLength);
  49       for (var i = 0; i < expectedData.length; i++)
  50         test.assertEq(expectedData.charCodeAt(i), new Int8Array(data)[i]);
  51       return receiver;
  52     });
  53     test.assertThrows(
  54         receiver.receive, receiver, [], 'Receive already in progress.');
  55   };
  56 }
  57
  58 // Returns a function that attempts to receive data from a provided DataReceiver
  59 // |receiver|, checks that the correct error is reported and returns a promise
  60 // that will resolve to |receiver|.
  61 function receiveAndCheckError(expectedError) {
  62   return function(receiver) {
  63     return receiver.receive().catch(function(error) {
  64       test.assertEq(expectedError, error.error);
  65       return receiver;
  66     });
  67     test.assertThrows(
  68         receiver.receive, receiver, [], 'Receive already in progress.');
  69   };
  70 }
  71
  72 // Serializes and deserializes the provided DataReceiver |receiver|, returning
  73 // a promise that will resolve to the newly deserialized DataReceiver.
  74 function serializeRoundTrip(receiver) {
  75   return Promise.all([
  76     receiver.serialize(),
  77     requireAsync('data_receiver'),
  78   ]).then(function(promises) {
  79     var serialized = promises[0];
  80     var dataReceiverModule = promises[1];
  81     return dataReceiverModule.DataReceiver.deserialize(serialized);
  82   });
  83 }
  84
  85 // Closes and returns the provided DataReceiver |receiver|.
  86 function closeReceiver(receiver) {
  87   receiver.close();
  88   return receiver;
  89 }
  90
  91 unittestBindings.exportTests([
  92   function testReceive() {
  93     createReceiver()
  94         .then(receiveAndCheckData('a'))
  95         .then(closeReceiver)
  96         .then(test.succeed, test.fail);
  97   },
  98
  99   function testReceiveError() {
 100     createReceiver()
 101         .then(receiveAndCheckError(1))
 102         .then(closeReceiver)
 103         .then(test.succeed, test.fail);
 104   },
 105
 106   function testReceiveDataAndError() {
 107     createReceiver()
 108         .then(receiveAndCheckData('a'))
 109         .then(receiveAndCheckError(1))
 110         .then(receiveAndCheckData('b'))
 111         .then(closeReceiver)
 112         .then(test.succeed, test.fail);
 113   },
 114
 115   function testReceiveErrorThenData() {
 116     createReceiver()
 117         .then(receiveAndCheckError(1))
 118         .then(receiveAndCheckData('a'))
 119         .then(closeReceiver)
 120         .then(test.succeed, test.fail);
 121   },
 122
 123   function testReceiveBeforeAndAfterSerialization() {
 124     createReceiver()
 125         .then(receiveAndCheckData('a'))
 126         .then(serializeRoundTrip)
 127         .then(receiveAndCheckData('b'))
 128         .then(closeReceiver)
 129         .then(test.succeed, test.fail);
 130   },
 131
 132   function testReceiveErrorSerialization() {
 133     createReceiver()
 134         .then(waitForReceiveError)
 135         .then(serializeRoundTrip)
 136         .then(receiveAndCheckError(1))
 137         .then(receiveAndCheckError(3))
 138         .then(closeReceiver)
 139         .then(test.succeed, test.fail);
 140   },
 141
 142   function testReceiveDataAndErrorSerialization() {
 143     createReceiver()
 144         .then(waitForReceiveError)
 145         .then(receiveAndCheckData('a'))
 146         .then(serializeRoundTrip)
 147         .then(receiveAndCheckError(1))
 148         .then(receiveAndCheckData('b'))
 149         .then(receiveAndCheckError(3))
 150         .then(closeReceiver)
 151         .then(test.succeed, test.fail);
 152   },
 153
 154   function testSerializeDuringReceive() {
 155     var receiver = createReceiver();
 156     Promise.all([
 157         receiver.then(receiveAndCheckError(FATAL_ERROR)),
 158         receiver
 159             .then(serializeRoundTrip)
 160             .then(receiveAndCheckData('a'))
 161             .then(closeReceiver)
 162     ]).then(test.succeed, test.fail);
 163   },
 164
 165   function testSerializeAfterClose() {
 166     function receiveAfterClose(receiver) {
 167       test.assertThrows(
 168           receiver.receive, receiver, [], 'DataReceiver has been closed');
 169     }
 170
 171     createReceiver()
 172         .then(closeReceiver)
 173         .then(serializeRoundTrip)
 174         .then(receiveAfterClose)
 175         .then(test.succeed, test.fail);
 176   },
 177
 178 ], test.runTests, exports);