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merged 1 commit into from
Nov 3, 2025
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[webaudio-testharness] Migrate ctor-gain.html #55808

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87 changes: 31 additions & 56 deletions webaudio/the-audio-api/the-gainnode-interface/ctor-gain.html
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Original file line number Diff line number Diff line change
Expand Up @@ -6,74 +6,49 @@
</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/webaudio/resources/audit-util.js"></script>
<script src="/webaudio/resources/audit.js"></script>
<script src="/webaudio/resources/audionodeoptions.js"></script>
</head>
<body>
<script id="layout-test-code">
let context;
<script>
const context = new AudioContext();

let audit = Audit.createTaskRunner();
test(() => {
testInvalidConstructor_W3CTH('GainNode', context);
}, 'GainNode: invalid constructor');

audit.define('initialize', (task, should) => {
context = initializeContext(should);
task.done();
});

audit.define('invalid constructor', (task, should) => {
testInvalidConstructor(should, 'GainNode', context);
task.done();
});

audit.define('default constructor', (task, should) => {
let prefix = 'node0';
let node = testDefaultConstructor(should, 'GainNode', context, {
prefix: prefix,
test(() => {
const prefix = 'node0';
const node = testDefaultConstructor_W3CTH('GainNode', context, {
prefix,
numberOfInputs: 1,
numberOfOutputs: 1,
channelCount: 2,
channelCountMode: 'max',
channelInterpretation: 'speakers'
});

testDefaultAttributes(should, node, prefix, [{name: 'gain', value: 1}]);

task.done();
});

audit.define('test AudioNodeOptions', (task, should) => {
testAudioNodeOptions(should, context, 'GainNode');
task.done();
});

audit.define('constructor with options', (task, should) => {
let node;
let options = {
gain: -2,
};

should(
() => {
node = new GainNode(context, options);
},
'node1 = new GainNode(c, ' + JSON.stringify(options) + ')')
.notThrow();
should(node instanceof GainNode, 'node1 instanceof GainNode')
.beEqualTo(true);

should(node.gain.value, 'node1.gain.value').beEqualTo(options.gain);

should(node.channelCount, 'node1.channelCount').beEqualTo(2);
should(node.channelCountMode, 'node1.channelCountMode')
.beEqualTo('max');
should(node.channelInterpretation, 'node1.channelInterpretation')
.beEqualTo('speakers');

task.done();
});

audit.run();
testDefaultAttributes_W3CTH(
node,
prefix,
[{ name: 'gain', value: 1 }]);
}, 'GainNode: default constructor and default attributes');

test(() => {
testAudioNodeOptions_W3CTH(context, 'GainNode');
}, 'GainNode: AudioNodeOptions are applied');

test(() => {
const options = { gain: -2 };
const node = new GainNode(context, options);
assert_true(node instanceof GainNode, 'instanceof GainNode');
assert_equals(node.gain.value, options.gain, 'node.gain.value');
assert_equals(node.channelCount, 2, 'node.channelCount');
assert_equals(node.channelCountMode, 'max', 'node.channelCountMode');
assert_equals(
node.channelInterpretation,
'speakers',
'node.channelInterpretation');
}, 'GainNode: constructor with options');
</script>
</body>
</html>