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| 1 <!doctype html> |
| 2 <html> |
| 3 <head> |
| 4 <title>Test Constructor: AudioBufferSource</title> |
| 5 <script src="../../resources/testharness.js"></script> |
| 6 <script src="../../resources/testharnessreport.js"></script> |
| 7 <script src="../resources/audio-testing.js"></script> |
| 8 <script src="audionodeoptions.js"></script> |
| 9 </head> |
| 10 |
| 11 <body> |
| 12 <script> |
| 13 var context; |
| 14 |
| 15 var audit = Audit.createTaskRunner(); |
| 16 |
| 17 audit.defineTask("initialize", function (taskDone) { |
| 18 Should("context = new OfflineAudioContext(...)", function () { |
| 19 context = new OfflineAudioContext(1, 1, 48000); |
| 20 }).notThrow(); |
| 21 |
| 22 taskDone(); |
| 23 }); |
| 24 |
| 25 audit.defineTask("invalid constructor", function (taskDone) { |
| 26 var node; |
| 27 var success = true; |
| 28 |
| 29 success = Should("new AudioBufferSourceNode()", function () { |
| 30 node = new AudioBufferSourceNode(); |
| 31 }).throw("TypeError"); |
| 32 success = Should("new AudioBufferSourceNode(1)", function () { |
| 33 node = new AudioBufferSourceNode(1) && success; |
| 34 }).throw("TypeError"); |
| 35 success = Should("new AudioBufferSourceNode(c, 42)", function () { |
| 36 node = new AudioBufferSourceNode(context, 42) && success; |
| 37 }).throw("TypeError"); |
| 38 |
| 39 Should("Invalid constructors", success) |
| 40 .summarize( |
| 41 "correctly threw errors", |
| 42 "did not throw errors in all cases"); |
| 43 |
| 44 taskDone(); |
| 45 }); |
| 46 |
| 47 audit.defineTask("default constructor", function (taskDone) { |
| 48 var node; |
| 49 var success = true; |
| 50 |
| 51 success = Should("node = new AudioBufferSourceNode(c)", function () { |
| 52 node = new AudioBufferSourceNode(context); |
| 53 }).notThrow() && success; |
| 54 |
| 55 success = Should("node instanceof AudioBufferSourceNode", |
| 56 node instanceof AudioBufferSourceNode).beEqualTo(true) && success; |
| 57 |
| 58 success = Should("node.buffer === null", node.buffer === null) |
| 59 .beEqualTo(true) && success; |
| 60 |
| 61 // This node using the factory method is used as a reference for the |
| 62 // defautl values. |
| 63 var factoryNode = context.createBufferSource(); |
| 64 |
| 65 var testAttributes = ["buffer", "detune", "loop", "loopEnd", "loopStart"
, |
| 66 "playbackRate"]; |
| 67 |
| 68 for (var index in testAttributes) { |
| 69 var name = testAttributes[index]; |
| 70 |
| 71 if (node[name] instanceof AudioParam) { |
| 72 success = Should("node." + name + ".value", node[name].value) |
| 73 .beEqualTo(factoryNode[name].value) && success; |
| 74 } else { |
| 75 success = Should("node." + name, node[name]) |
| 76 .beEqualTo(factoryNode[name]) && success; |
| 77 } |
| 78 } |
| 79 |
| 80 Should("AudioBufferSourceNode constructed", success) |
| 81 .summarize("correctly", "incorrectly"); |
| 82 |
| 83 taskDone(); |
| 84 }); |
| 85 |
| 86 audit.defineTask("constructor options", function (taskDone) { |
| 87 var node; |
| 88 var success = true; |
| 89 |
| 90 var buffer = context.createBuffer(2, 1000, context.sampleRate); |
| 91 |
| 92 var options = { |
| 93 buffer: buffer, |
| 94 detune: .5, |
| 95 loop: true, |
| 96 loopEnd: (buffer.length / 2) / context.sampleRate, |
| 97 loopStart: 5 / context.sampleRate, |
| 98 playbackRate: .75 |
| 99 }; |
| 100 |
| 101 message = "node = new AudioBufferSourceNode(c, " + JSON.stringify(option
s) + ")"; |
| 102 |
| 103 success = Should(message, function () { |
| 104 node = new AudioBufferSourceNode(context, options); |
| 105 }).notThrow(); |
| 106 |
| 107 // Use the factory method to create an equivalent node and compare the |
| 108 // results from the constructor against this node. |
| 109 var factoryNode = context.createBufferSource(); |
| 110 factoryNode.buffer = options.buffer; |
| 111 factoryNode.detune.value = options.detune; |
| 112 factoryNode.loop = options.loop; |
| 113 factoryNode.loopEnd = options.loopEnd; |
| 114 factoryNode.loopStart = options.loopStart; |
| 115 factoryNode.playbackRate.value = options.playbackRate; |
| 116 |
| 117 success = Should("node.buffer === buffer", node.buffer === buffer) |
| 118 .beEqualTo(true) && success; |
| 119 success = Should("node.detune.value", node.detune.value) |
| 120 .beEqualTo(factoryNode.detune.value) && success; |
| 121 success = Should("node.loop", node.loop) |
| 122 .beEqualTo(factoryNode.loop) && success; |
| 123 success = Should("node.loopEnd", node.loopEnd) |
| 124 .beEqualTo(factoryNode.loopEnd) && success; |
| 125 success = Should("node.loopStart", node.loopStart) |
| 126 .beEqualTo(factoryNode.loopStart) && success; |
| 127 success = Should("node.playbackRate.value", node.playbackRate.value) |
| 128 .beEqualTo(factoryNode.playbackRate.value) && success; |
| 129 |
| 130 Should("AudioBufferSource with options cosntructed", success) |
| 131 .summarize("correctly", "incorrectly"); |
| 132 |
| 133 taskDone(); |
| 134 }); |
| 135 |
| 136 audit.runTasks(); |
| 137 </script> |
| 138 </body> |
| 139 </html> |
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