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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-dynamicscompressornode-interface/ctor-dynamicscompressor.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<title>
Test Constructor: DynamicsCompressor
</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;
let audit = Audit.createTaskRunner();
audit.define('initialize', (task, should) => {
context = initializeContext(should);
task.done();
});
audit.define('invalid constructor', (task, should) => {
testInvalidConstructor(should, 'DynamicsCompressorNode', context);
task.done();
});
audit.define('default constructor', (task, should) => {
let prefix = 'node0';
let node =
testDefaultConstructor(should, 'DynamicsCompressorNode', context, {
prefix: prefix,
numberOfInputs: 1,
numberOfOutputs: 1,
channelCount: 2,
channelCountMode: 'clamped-max',
channelInterpretation: 'speakers'
});
testDefaultAttributes(should, node, prefix, [
{name: 'threshold', value: -24}, {name: 'knee', value: 30},
{name: 'ratio', value: 12}, {name: 'reduction', value: 0},
{name: 'attack', value: Math.fround(0.003)},
{name: 'release', value: 0.25}
]);
task.done();
});
audit.define('test AudioNodeOptions', (task, should) => {
// Can't use testAudioNodeOptions because the constraints for this node
// are not supported there.
// Array of test options to be run. Each entry is a dictionary where
// |testAttribute| is the name of the attribute to be tested,
// |testValue| is the value to be used, and |expectedErrorType| is the
// error type if the test is expected to throw an error.
// |expectedErrorType| should be set only if the test does throw.
let testOptions = [
// Test channel count
{
testAttribute: 'channelCount',
testValue: 1,
},
{
testAttribute: 'channelCount',
testValue: 2,
},
{
testAttribute: 'channelCount',
testValue: 0,
expectedErrorType: 'NotSupportedError'
},
{
testAttribute: 'channelCount',
testValue: 3,
expectedErrorType: 'NotSupportedError'
},
{
testAttribute: 'channelCount',
testValue: 99,
expectedErrorType: 'NotSupportedError'
},
// Test channel count mode
{
testAttribute: 'channelCountMode',
testValue: 'clamped-max',
},
{
testAttribute: 'channelCountMode',
testValue: 'explicit',
},
{
testAttribute: 'channelCountMode',
testValue: 'max',
expectedErrorType: 'NotSupportedError'
},
{
testAttribute: 'channelCountMode',
testValue: 'foobar',
expectedErrorType: TypeError
},
// Test channel interpretation
{
testAttribute: 'channelInterpretation',
testValue: 'speakers',
},
{
testAttribute: 'channelInterpretation',
testValue: 'discrete',
},
{
testAttribute: 'channelInterpretation',
testValue: 'foobar',
expectedErrorType: TypeError
}
];
testOptions.forEach((option) => {
let nodeOptions = {};
nodeOptions[option.testAttribute] = option.testValue;
testNode(should, context, {
nodeOptions: nodeOptions,
testAttribute: option.testAttribute,
expectedValue: option.testValue,
expectedErrorType: option.expectedErrorType
});
});
task.done();
});
audit.define('constructor with options', (task, should) => {
let node;
let options =
{threshold: -33, knee: 15, ratio: 7, attack: 0.625, release: 0.125};
should(
() => {
node = new DynamicsCompressorNode(context, options);
},
'node1 = new DynamicsCompressorNode(c, ' + JSON.stringify(options) +
')')
.notThrow();
should(
node instanceof DynamicsCompressorNode,
'node1 instanceof DynamicsCompressorNode')
.beEqualTo(true);
should(node.threshold.value, 'node1.threshold.value')
.beEqualTo(options.threshold);
should(node.knee.value, 'node1.knee.value').beEqualTo(options.knee);
should(node.ratio.value, 'node1.ratio.value').beEqualTo(options.ratio);
should(node.attack.value, 'node1.attack.value')
.beEqualTo(options.attack);
should(node.release.value, 'node1.release.value')
.beEqualTo(options.release);
should(node.channelCount, 'node1.channelCount').beEqualTo(2);
should(node.channelCountMode, 'node1.channelCountMode')
.beEqualTo('clamped-max');
should(node.channelInterpretation, 'node1.channelInterpretation')
.beEqualTo('speakers');
task.done();
});
audit.run();
// Test possible options for DynamicsCompressor constructor.
function testNode(should, context, options) {
// Node to be tested
let node;
let createNodeFunction = () => {
return () => node =
new DynamicsCompressorNode(context, options.nodeOptions);
};
let message = 'new DynamicsCompressorNode(c, ' +
JSON.stringify(options.nodeOptions) + ')';
if (options.expectedErrorType === TypeError) {
should(createNodeFunction(), message)
.throw(options.expectedErrorType);
} else if (options.expectedErrorType === 'NotSupportedError') {
should(createNodeFunction(), message)
.throw(DOMException, 'NotSupportedError');
} else {
should(createNodeFunction(), message).notThrow();
should(node[options.testAttribute], 'node.' + options.testAttribute)
.beEqualTo(options.expectedValue);
}
}
</script>
</body>
</html>