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Test Info: Warnings
- This test has a WPT meta file that expects 8 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-audiocontext-interface/audiocontext-rendersizehint.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>Test AudioContextOptions renderSizeHint</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
const SAMPLE_RATE = 44100;
const SIX_SECONDS_SAMPLES = SAMPLE_RATE * 6;
test(function() {
const context = new AudioContext();
assert_equals(context.renderQuantumSize, 128,
'renderQuantumSize with no hint');
context.close();
}, 'AudioContext with no renderSizeHint');
test(function() {
const context = new AudioContext({renderSizeHint: 'default'});
assert_equals(context.renderQuantumSize, 128,
'renderQuantumSize with "default" hint');
context.close();
}, 'AudioContext with renderSizeHint: "default"');
test(function() {
const context = new AudioContext({renderSizeHint: 'hardware'});
assert_greater_than(context.renderQuantumSize, 0,
'renderQuantumSize with "hardware" hint');
context.close();
}, 'AudioContext with renderSizeHint: "hardware"');
test(function() {
const context = new AudioContext({renderSizeHint: 256});
assert_equals(context.renderQuantumSize, 256,
'renderQuantumSize with 256 hint');
context.close();
}, 'AudioContext with renderSizeHint: 256');
test(function() {
// 1 is a valid render quantum size.
const context = new AudioContext({renderSizeHint: 1});
assert_equals(context.renderQuantumSize, 1, 'renderQuantumSize with 1 hint');
context.close();
}, 'AudioContext with renderSizeHint: 1');
test(function() {
const context = new AudioContext({sampleRate: SAMPLE_RATE,
renderSizeHint: SIX_SECONDS_SAMPLES});
assert_equals(context.renderQuantumSize, SIX_SECONDS_SAMPLES,
'renderQuantumSize at 6s boundary');
context.close();
}, 'AudioContext with renderSizeHint at 6s boundary');
test(function() {
assert_throws_dom('NotSupportedError', () => {
new AudioContext({renderSizeHint: 0});
}, 'new AudioContext({renderSizeHint: 0})');
}, 'AudioContext with invalid renderSizeHint (0) throws NotSupportedError');
test(function() {
assert_throws_dom('NotSupportedError', () => {
new AudioContext({sampleRate: SAMPLE_RATE,
renderSizeHint: SIX_SECONDS_SAMPLES + 1});
}, `new AudioContext({renderSizeHint: ${SIX_SECONDS_SAMPLES + 1}})`);
}, 'AudioContext with renderSizeHint > 6s boundary throws NotSupportedError');
</script>