Anne van Kesteren
47a27e9af8
Automatic update from web-platform-tests Remove ShadowRealm test coverage This intentionally does not make infrastructure or documentation changes, but without implementer support all the ShadowRealm tests add significant noise. Once there is implementer support this can be reverted. -- wpt-commits: e4a4672e9e607fc2b28e7173b83ce4e38ef53071 wpt-pr: 59794
54 lines
1.8 KiB
JavaScript
54 lines
1.8 KiB
JavaScript
// META: global=window,worker
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// META: script=../resources/rs-utils.js
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'use strict';
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// Prior to whatwg/stream#870 it was possible to construct a ReadableStreamBYOBRequest directly. This made it possible
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// to construct requests that were out-of-sync with the state of the ReadableStream. They could then be used to call
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// internal operations, resulting in asserts or bad behaviour. This file contains regression tests for the change.
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function getRealByteStreamController() {
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let controller;
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new ReadableStream({
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start(c) {
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controller = c;
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},
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type: 'bytes'
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});
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return controller;
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}
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// Create an object pretending to have prototype |prototype|, of type |type|. |type| is one of "undefined", "null",
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// "fake", or "real". "real" will call the realObjectCreator function to get a real instance of the object.
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function createDummyObject(prototype, type, realObjectCreator) {
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switch (type) {
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case 'undefined':
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return undefined;
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case 'null':
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return null;
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case 'fake':
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return Object.create(prototype);
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case 'real':
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return realObjectCreator();
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}
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throw new Error('not reached');
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}
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const dummyTypes = ['undefined', 'null', 'fake', 'real'];
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for (const controllerType of dummyTypes) {
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const controller = createDummyObject(ReadableByteStreamController.prototype, controllerType,
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getRealByteStreamController);
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for (const viewType of dummyTypes) {
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const view = createDummyObject(Uint8Array.prototype, viewType, () => new Uint8Array(16));
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test(() => {
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assert_throws_js(TypeError, () => new ReadableStreamBYOBRequest(controller, view),
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'constructor should throw');
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}, `ReadableStreamBYOBRequest constructor should throw when passed a ${controllerType} ` +
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`ReadableByteStreamController and a ${viewType} view`);
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}
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}
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