| <!DOCTYPE html> |
| <html> |
| <head> |
| <title> |
| AudioParam Value Setter Error Tests |
| </title> |
| <script src="../../imported/w3c/web-platform-tests/resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script src="../resources/audit-util.js"></script> |
| <script src="../resources/audit.js"></script> |
| <script src="../resources/audioparam-testing.js"></script> |
| </head> |
| <body> |
| <script id="layout-test-code"> |
| let sampleRate = 16384; |
| // Number of frames in a rendering quantum. |
| // Test doesn't need to run for very long. |
| let renderDuration = 0.2; |
| let renderFrames = renderDuration * sampleRate; |
| let automationEndTime = 0.1; |
| |
| let audit = Audit.createTaskRunner(); |
| |
| audit.define( |
| 'Test value setter with setValueCurveAtTime', (task, should) => { |
| let context = new OfflineAudioContext( |
| {length: renderFrames, sampleRate: sampleRate}); |
| |
| let src = new ConstantSourceNode(context); |
| let gain = new GainNode(context); |
| |
| src.connect(gain).connect(context.destination); |
| |
| let render_quantum_duration = |
| RENDER_QUANTUM_FRAMES / context.sampleRate; |
| |
| // Start and duration of the curve automation. These are fairly |
| // arbitrary, but the start should be at least 2 render quanta from |
| // the beginning to allow time for testing the value setter before |
| // the curve starts. The duration should be at least 2 render |
| // quanta to allow us to apply the value setter in the middle |
| // (somewhere) of the curve. |
| let curveStartTime = 3 * render_quantum_duration; |
| let curveDuration = 4 * render_quantum_duration; |
| |
| should( |
| () => { |
| gain.gain.setValueCurveAtTime( |
| [-2, 1], curveStartTime, curveDuration); |
| }, |
| `setValueCurveAtTime([...], ${curveStartTime}, ${ |
| curveDuration |
| })`) |
| .notThrow(); |
| |
| // Applying the value setter outside the curve automation should not |
| // throw. The gain value is arbitrary. |
| context.suspend(curveStartTime - render_quantum_duration) |
| .then(() => { |
| should( |
| () => gain.gain.value = Math.PI, |
| 'Using value setter at time ' + context.currentTime + |
| ' before curve starts') |
| .notThrow(); |
| }) |
| .then(() => context.resume()); |
| |
| // Applying the value setter inside the curve automation should not |
| // throw. The gain value is arbitrary. |
| context.suspend(curveStartTime + curveDuration / 2) |
| .then(() => { |
| should( |
| () => gain.gain.value = 0, |
| 'Using value setter at time ' + context.currentTime + |
| ' in the middle of the curve') |
| .throw(DOMException, 'NotSupportedError'); |
| }) |
| .then(() => context.resume()); |
| |
| src.start(); |
| |
| // Don't care about the actual output. |
| context.startRendering().then(() => task.done()); |
| }); |
| |
| audit.run(); |
| </script> |
| </body> |
| </html> |
