90 lines
2.3 KiB
JavaScript
90 lines
2.3 KiB
JavaScript
// META: global=window,worker,shadowrealm
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// META: script=../resources/test-utils.js
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// META: script=/common/gc.js
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'use strict';
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promise_test(async () => {
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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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});
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await garbageCollect();
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return delay(50).then(() => {
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controller.close();
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assert_throws_js(TypeError, () => controller.close(), 'close should throw a TypeError the second time');
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controller.error();
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});
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}, 'ReadableStreamController methods should continue working properly when scripts lose their reference to the ' +
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'readable stream');
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promise_test(async () => {
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let controller;
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const closedPromise = new ReadableStream({
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start(c) {
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controller = c;
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}
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}).getReader().closed;
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await garbageCollect();
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return delay(50).then(() => controller.close()).then(() => closedPromise);
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}, 'ReadableStream closed promise should fulfill even if the stream and reader JS references are lost');
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promise_test(async t => {
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const theError = new Error('boo');
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let controller;
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const closedPromise = new ReadableStream({
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start(c) {
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controller = c;
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}
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}).getReader().closed;
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await garbageCollect();
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return delay(50).then(() => controller.error(theError))
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.then(() => promise_rejects_exactly(t, theError, closedPromise));
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}, 'ReadableStream closed promise should reject even if stream and reader JS references are lost');
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promise_test(async () => {
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const rs = new ReadableStream({});
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rs.getReader();
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await garbageCollect();
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return delay(50).then(() => assert_throws_js(TypeError, () => rs.getReader(),
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'old reader should still be locking the stream even after garbage collection'));
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}, 'Garbage-collecting a ReadableStreamDefaultReader should not unlock its stream');
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promise_test(async () => {
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const promise = (() => {
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const rs = new ReadableStream({
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pull(controller) {
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controller.enqueue('words');
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}
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});
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const reader = rs.getReader();
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return reader.read();
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})();
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await garbageCollect();
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const {value, done} = await promise;
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// If we get here, the test passed.
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assert_equals(value, 'words', 'value should be words');
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assert_false(done, 'we should not be done');
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}, 'A ReadableStream and its reader should not be garbage collected while there is a read promise pending');
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