mediasource-appendbuffer-sharedarraybuffer.window.js

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This WPT test may be referenced by the following Test IDs:
- /media-source/mediasource-appendbuffer-sharedarraybuffer.window.html - WPT Dashboard Interop Dashboard

// META: title=SourceBuffer.appendBuffer() shared buffer test cases

// META: script=mediasource-util.js

// The data argument of appendBuffer() is not [AllowShared], so a

// SharedArrayBuffer, or a view onto one, has to throw a TypeError.

//

// See https://github.com/whatwg/html/issues/5380 for why not `new SharedArrayBuffer()`.

const sharedBuffer = new WebAssembly.Memory({ shared: true, initial: 1, maximum: 1 }).buffer;

for (const [kind, data] of [["SharedArrayBuffer", sharedBuffer],

                            ["Uint8Array(SharedArrayBuffer)", new Uint8Array(sharedBuffer)]]) {

    mediasource_test((test, mediaElement, mediaSource) => {

        const sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

        assert_throws_js(TypeError, () => sourceBuffer.appendBuffer(data),

                         `appendBuffer() threw an exception when passed a ${kind}.`);

        test.done();

    }, `Test appendBuffer() with a ${kind}`);