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Unified Diff: third_party/WebKit/LayoutTests/http/tests/streams/resources/rs-test-templates.js

Issue 1404523005: Implement author-constructible ReadableStream using V8 extras (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Minor test tweaks Created 5 years, 1 month ago
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Index: third_party/WebKit/LayoutTests/http/tests/streams/resources/rs-test-templates.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/streams/resources/rs-test-templates.js b/third_party/WebKit/LayoutTests/http/tests/streams/resources/rs-test-templates.js
new file mode 100644
index 0000000000000000000000000000000000000000..23e44ec1d35ce5c7c3010d84ad09571bf176c208
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/streams/resources/rs-test-templates.js
@@ -0,0 +1,622 @@
+'use strict';
+
+// These tests can be run against any readable stream produced by the web platform that meets the given descriptions.
+// For readable stream tests, the factory should return the stream. For reader tests, the factory should return a
+// { stream, reader } object. (You can use this to vary the time at which you acquire a reader.)
+
+self.templatedRSEmpty = (label, factory) => {
+ test(() => {}, 'Running templatedRSEmpty with ' + label);
+
+ test(() => {
+
+ const rs = factory();
+
+ assert_equals(typeof rs.locked, 'boolean', 'has a boolean locked getter');
+ assert_equals(typeof rs.cancel, 'function', 'has a cancel method');
+ assert_equals(typeof rs.getReader, 'function', 'has a getReader method');
+ assert_equals(typeof rs.tee, 'function', 'has a tee method');
+
+ }, 'instances have the correct methods and properties');
+};
+
+self.templatedRSClosed = (label, factory) => {
+ test(() => {}, 'Running templatedRSClosed with ' + label);
+
+ promise_test(() => {
+
+ const rs = factory();
+ const cancelPromise1 = rs.cancel();
+ const cancelPromise2 = rs.cancel();
+
+ assert_not_equals(cancelPromise1, cancelPromise2, 'cancel() calls should return distinct promises');
+
+ return Promise.all([
+ cancelPromise1.then(v => assert_equals(v, undefined, 'first cancel() call should fulfill with undefined')),
+ cancelPromise2.then(v => assert_equals(v, undefined, 'second cancel() call should fulfill with undefined'))
+ ]);
+
+ }, 'cancel() should return a distinct fulfilled promise each time');
+
+ test(() => {
+
+ const rs = factory();
+ assert_false(rs.locked, 'locked getter should return false');
+
+ }, 'locked should be false');
+
+ test(() => {
+
+ const rs = factory();
+ rs.getReader(); // getReader() should not throw.
+
+ }, 'getReader() should be OK');
+
+ test(() => {
+
+ const rs = factory();
+
+ const reader = rs.getReader();
+ reader.releaseLock();
+
+ const reader2 = rs.getReader(); // Getting a second reader should not throw.
+ reader2.releaseLock();
+
+ rs.getReader(); // Getting a third reader should not throw.
+
+ }, 'should be able to acquire multiple readers if they are released in succession');
+
+ test(() => {
+
+ const rs = factory();
+
+ rs.getReader();
+
+ assert_throws(new TypeError(), () => rs.getReader(), 'getting a second reader should throw');
+ assert_throws(new TypeError(), () => rs.getReader(), 'getting a third reader should throw');
+
+ }, 'should not be able to acquire a second reader if we don\'t release the first one');
+};
+
+self.templatedRSErrored = (label, factory, error) => {
+ test(() => {}, 'Running templatedRSErrored with ' + label);
+
+ promise_test(t => {
+
+ const rs = factory();
+ const reader = rs.getReader();
+
+ return Promise.all([
+ promise_rejects(t, error, reader.closed),
+ promise_rejects(t, error, reader.read())
+ ]);
+
+ }, 'getReader() should return a reader that acts errored');
+
+ promise_test(t => {
+
+ const rs = factory();
+ const reader = rs.getReader();
+
+ return Promise.all([
+ promise_rejects(t, error, reader.read()),
+ promise_rejects(t, error, reader.read()),
+ promise_rejects(t, error, reader.closed)
+ ]);
+
+ }, 'read() twice should give the error each time');
+
+ test(() => {
+ const rs = factory();
+
+ assert_false(rs.locked, 'locked getter should return false');
+ }, 'locked should be false');
+};
+
+self.templatedRSErroredSyncOnly = (label, factory, error) => {
+ test(() => {}, 'Running templatedRSErroredSyncOnly with ' + label);
+
+ promise_test(t => {
+
+ const rs = factory();
+ rs.getReader().releaseLock();
+ const reader = rs.getReader(); // Calling getReader() twice does not throw (the stream is not locked).
+
+ return promise_rejects(t, error, reader.closed);
+
+ }, 'should be able to obtain a second reader, with the correct closed promise');
+
+ test(() => {
+
+ const rs = factory();
+ rs.getReader();
+
+ assert_throws(new TypeError(), () => rs.getReader(), 'getting a second reader should throw a TypeError');
+ assert_throws(new TypeError(), () => rs.getReader(), 'getting a third reader should throw a TypeError');
+
+ }, 'should not be able to obtain additional readers if we don\'t release the first lock');
+
+ promise_test(t => {
+
+ const rs = factory();
+ const cancelPromise1 = rs.cancel();
+ const cancelPromise2 = rs.cancel();
+
+ assert_not_equals(cancelPromise1, cancelPromise2, 'cancel() calls should return distinct promises');
+
+ return Promise.all([
+ promise_rejects(t, error, cancelPromise1),
+ promise_rejects(t, error, cancelPromise2)
+ ]);
+
+ }, 'cancel() should return a distinct rejected promise each time');
+
+ promise_test(t => {
+
+ const rs = factory();
+ const reader = rs.getReader();
+ const cancelPromise1 = reader.cancel();
+ const cancelPromise2 = reader.cancel();
+
+ assert_not_equals(cancelPromise1, cancelPromise2, 'cancel() calls should return distinct promises');
+
+ return Promise.all([
+ promise_rejects(t, error, cancelPromise1),
+ promise_rejects(t, error, cancelPromise2)
+ ]);
+
+ }, 'reader cancel() should return a distinct rejected promise each time');
+};
+
+self.templatedRSEmptyReader = (label, factory) => {
+ test(() => {}, 'Running templatedRSEmptyReader with ' + label);
+
+ test(() => {
+
+ const reader = factory().reader;
+
+ assert_true('closed' in reader, 'has a closed property');
+ assert_equals(typeof reader.closed.then, 'function', 'closed property is thenable');
+
+ assert_equals(typeof reader.cancel, 'function', 'has a cancel method');
+ assert_equals(typeof reader.read, 'function', 'has a read method');
+ assert_equals(typeof reader.releaseLock, 'function', 'has a releaseLock method');
+
+ }, 'instances have the correct methods and properties');
+
+ test(() => {
+
+ const stream = factory().stream;
+
+ assert_true(stream.locked, 'locked getter should return true');
+
+ }, 'locked should be true');
+
+ promise_test(t => {
+
+ const reader = factory().reader;
+
+ reader.read().then(
+ t.unreached_func('read() should not fulfill'),
+ t.unreached_func('read() should not reject')
+ );
+
+ return delay(500);
+
+ }, 'read() should never settle');
+
+ promise_test(t => {
+
+ const reader = factory().reader;
+
+ reader.read().then(
+ t.unreached_func('read() should not fulfill'),
+ t.unreached_func('read() should not reject')
+ );
+
+ reader.read().then(
+ t.unreached_func('read() should not fulfill'),
+ t.unreached_func('read() should not reject')
+ );
+
+ return delay(500);
+
+ }, 'two read()s should both never settle');
+
+ test(() => {
+
+ const reader = factory().reader;
+ assert_not_equals(reader.read(), reader.read(), 'the promises returned should be distinct');
+
+ }, 'read() should return distinct promises each time');
+
+ test(() => {
+
+ const stream = factory().stream;
+ assert_throws(new TypeError(), () => stream.getReader(), 'stream.getReader() should throw a TypeError');
+
+ }, 'getReader() again on the stream should fail');
+
+ promise_test(t => {
+
+ const streamAndReader = factory();
+ const stream = streamAndReader.stream;
+ const reader = streamAndReader.reader;
+
+ reader.read().then(
+ t.unreached_func('first read() should not fulfill'),
+ t.unreached_func('first read() should not reject')
+ );
+
+ reader.read().then(
+ t.unreached_func('second read() should not fulfill'),
+ t.unreached_func('second read() should not reject')
+ );
+
+ reader.closed.then(
+ t.unreached_func('closed should not fulfill'),
+ t.unreached_func('closed should not reject')
+ );
+
+ assert_throws(new TypeError(), () => reader.releaseLock(), 'releaseLock should throw a TypeError');
+
+ assert_true(stream.locked, 'the stream should still be locked');
+
+ return delay(500);
+
+ }, 'releasing the lock with pending read requests should throw but the read requests should stay pending');
+
+ promise_test(t => {
+
+ const reader = factory().reader;
+ reader.releaseLock();
+
+ return Promise.all([
+ promise_rejects(t, new TypeError(), reader.read()),
+ promise_rejects(t, new TypeError(), reader.read())
+ ]);
+
+ }, 'releasing the lock should cause further read() calls to reject with a TypeError');
+
+ promise_test(t => {
+
+ const reader = factory().reader;
+
+ const closedBefore = reader.closed;
+ reader.releaseLock();
+ const closedAfter = reader.closed;
+
+ assert_equals(closedBefore, closedAfter, 'the closed promise should not change identity');
+
+ return promise_rejects(t, new TypeError(), closedBefore);
+
+ }, 'releasing the lock should cause closed calls to reject with a TypeError');
+
+ test(() => {
+
+ const streamAndReader = factory();
+ const stream = streamAndReader.stream;
+ const reader = streamAndReader.reader;
+
+ reader.releaseLock();
+ assert_false(stream.locked, 'locked getter should return false');
+
+ }, 'releasing the lock should cause locked to become false');
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+ reader.cancel();
+
+ return reader.read().then(r => {
+ assert_object_equals(r, { value: undefined, done: true }, 'read()ing from the reader should give a done result');
+ });
+
+ }, 'canceling via the reader should cause the reader to act closed');
+
+ promise_test(t => {
+
+ const stream = factory().stream;
+ return promise_rejects(t, new TypeError(), stream.cancel());
+
+ }, 'canceling via the stream should fail');
+};
+
+self.templatedRSClosedReader = (label, factory) => {
+ test(() => {}, 'Running templatedRSClosedReader with ' + label);
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+
+ return reader.read().then(v => {
+ assert_object_equals(v, { value: undefined, done: true }, 'read() should fulfill correctly');
+ });
+
+ }, 'read() should fulfill with { value: undefined, done: true }');
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+
+ return Promise.all([
+ reader.read().then(v => {
+ assert_object_equals(v, { value: undefined, done: true }, 'read() should fulfill correctly');
+ }),
+ reader.read().then(v => {
+ assert_object_equals(v, { value: undefined, done: true }, 'read() should fulfill correctly');
+ })
+ ]);
+
+ }, 'read() multiple times should fulfill with { value: undefined, done: true }');
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+
+ return reader.read().then(() => reader.read()).then(v => {
+ assert_object_equals(v, { value: undefined, done: true }, 'read() should fulfill correctly');
+ });
+
+ }, 'read() should work when used within another read() fulfill callback');
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+
+ return reader.closed.then(v => assert_equals(v, undefined, 'reader closed should fulfill with undefined'));
+
+ }, 'closed should fulfill with undefined');
+
+ promise_test(t => {
+
+ const reader = factory().reader;
+
+ const closedBefore = reader.closed;
+ reader.releaseLock();
+ const closedAfter = reader.closed;
+
+ assert_not_equals(closedBefore, closedAfter, 'the closed promise should change identity');
+
+ return Promise.all([
+ closedBefore.then(v => assert_equals(v, undefined, 'reader.closed acquired before release should fulfill')),
+ promise_rejects(t, new TypeError(), closedAfter)
+ ]);
+
+ }, 'releasing the lock should cause closed to reject and change identity');
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+ const cancelPromise1 = reader.cancel();
+ const cancelPromise2 = reader.cancel();
+ const closedReaderPromise = reader.closed;
+
+ assert_not_equals(cancelPromise1, cancelPromise2, 'cancel() calls should return distinct promises');
+ assert_not_equals(cancelPromise1, closedReaderPromise, 'cancel() promise 1 should be distinct from reader.closed');
+ assert_not_equals(cancelPromise2, closedReaderPromise, 'cancel() promise 2 should be distinct from reader.closed');
+
+ return Promise.all([
+ cancelPromise1.then(v => assert_equals(v, undefined, 'first cancel() should fulfill with undefined')),
+ cancelPromise2.then(v => assert_equals(v, undefined, 'second cancel() should fulfill with undefined'))
+ ]);
+
+ }, 'cancel() should return a distinct fulfilled promise each time');
+};
+
+self.templatedRSErroredReader = (label, factory, error) => {
+ test(() => {}, 'Running templatedRSErroredReader with ' + label);
+
+ promise_test(t => {
+
+ const reader = factory().reader;
+ return promise_rejects(t, error, reader.closed);
+
+ }, 'closed should reject with the error');
+
+ promise_test(t => {
+
+ const reader = factory().reader;
+ const closedBefore = reader.closed;
+
+ return promise_rejects(t, error, closedBefore).then(() => {
+ reader.releaseLock();
+
+ const closedAfter = reader.closed;
+ assert_not_equals(closedBefore, closedAfter, 'the closed promise should change identity');
+
+ return promise_rejects(t, new TypeError(), closedAfter);
+ });
+
+ }, 'releasing the lock should cause closed to reject and change identity');
+
+ promise_test(t => {
+
+ const reader = factory().reader;
+ return promise_rejects(t, error, reader.read());
+
+ }, 'read() should reject with the error');
+};
+
+self.templatedRSTwoChunksOpenReader = (label, factory, chunks) => {
+ test(() => {}, 'Running templatedRSTwoChunksOpenReader with ' + label);
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+
+ return Promise.all([
+ reader.read().then(r => {
+ assert_object_equals(r, { value: chunks[0], done: false }, 'first result should be correct');
+ }),
+ reader.read().then(r => {
+ assert_object_equals(r, { value: chunks[1], done: false }, 'second result should be correct');
+ })
+ ]);
+
+ }, 'calling read() twice without waiting will eventually give both chunks (sequential)');
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+
+ return reader.read().then(r => {
+ assert_object_equals(r, { value: chunks[0], done: false }, 'first result should be correct');
+
+ return reader.read().then(r2 => {
+ assert_object_equals(r2, { value: chunks[1], done: false }, 'second result should be correct');
+ });
+ });
+
+ }, 'calling read() twice without waiting will eventually give both chunks (nested)');
+
+ test(() => {
+
+ const reader = factory().reader;
+ assert_not_equals(reader.read(), reader.read(), 'the promises returned should be distinct');
+
+ }, 'read() should return distinct promises each time');
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+
+ const promise1 = reader.closed.then(v => {
+ assert_equals(v, undefined, 'reader closed should fulfill with undefined');
+ });
+
+ const promise2 = reader.read().then(r => {
+ assert_object_equals(r, { value: chunks[0], done: false },
+ 'promise returned before cancellation should fulfill with a chunk');
+ });
+
+ reader.cancel();
+
+ const promise3 = reader.read().then(r => {
+ assert_object_equals(r, { value: undefined, done: true },
+ 'promise returned after cancellation should fulfill with an end-of-stream signal');
+ });
+
+ return Promise.all([promise1, promise2, promise3]);
+
+ }, 'cancel() after a read() should still give that single read result');
+};
+
+self.templatedRSTwoChunksClosedReader = function (label, factory, chunks) {
+ test(() => {}, 'Running templatedRSTwoChunksClosedReader with ' + label);
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+
+ return Promise.all([
+ reader.read().then(r => {
+ assert_object_equals(r, { value: chunks[0], done: false }, 'first result should be correct');
+ }),
+ reader.read().then(r => {
+ assert_object_equals(r, { value: chunks[1], done: false }, 'second result should be correct');
+ }),
+ reader.read().then(r => {
+ assert_object_equals(r, { value: undefined, done: true }, 'third result should be correct');
+ })
+ ]);
+
+ }, 'third read(), without waiting, should give { value: undefined, done: true } (sequential)');
+
+ promise_test(() => {
+
+ const reader = factory().reader;
+
+ return reader.read().then(r => {
+ assert_object_equals(r, { value: chunks[0], done: false }, 'first result should be correct');
+
+ return reader.read().then(r2 => {
+ assert_object_equals(r2, { value: chunks[1], done: false }, 'second result should be correct');
+
+ return reader.read().then(r3 => {
+ assert_object_equals(r3, { value: undefined, done: true }, 'third result should be correct');
+ });
+ });
+ });
+
+ }, 'third read(), without waiting, should give { value: undefined, done: true } (nested)');
+
+ promise_test(() => {
+
+ const streamAndReader = factory();
+ const stream = streamAndReader.stream;
+ const reader = streamAndReader.reader;
+
+ assert_true(stream.locked, 'stream should start locked');
+
+ const promise = reader.closed.then(v => {
+ assert_equals(v, undefined, 'reader closed should fulfill with undefined');
+ assert_true(stream.locked, 'stream should remain locked');
+ });
+
+ reader.read();
+ reader.read();
+
+ return promise;
+
+ }, 'draining the stream via read() should cause the reader closed promise to fulfill, but locked stays true');
+
+ promise_test(() => {
+
+ const streamAndReader = factory();
+ const stream = streamAndReader.stream;
+ const reader = streamAndReader.reader;
+
+ const promise = reader.closed.then(() => {
+ assert_true(stream.locked, 'the stream should start locked');
+ reader.releaseLock(); // Releasing the lock after reader closed should not throw.
+ assert_false(stream.locked, 'the stream should end unlocked');
+ });
+
+ reader.read();
+ reader.read();
+
+ return promise;
+
+ }, 'releasing the lock after the stream is closed should cause locked to become false');
+
+ promise_test(t => {
+
+ const reader = factory().reader;
+
+ reader.releaseLock();
+
+ return Promise.all([
+ promise_rejects(t, new TypeError(), reader.read()),
+ promise_rejects(t, new TypeError(), reader.read()),
+ promise_rejects(t, new TypeError(), reader.read())
+ ]);
+
+ }, 'releasing the lock should cause further read() calls to reject with a TypeError');
+
+ promise_test(() => {
+
+ const streamAndReader = factory();
+ const stream = streamAndReader.stream;
+ const reader = streamAndReader.reader;
+
+ const readerClosed = reader.closed;
+
+ assert_equals(reader.closed, readerClosed, 'accessing reader.closed twice in succession gives the same value');
+
+ const promise = reader.read().then(() => {
+ assert_equals(reader.closed, readerClosed, 'reader.closed is the same after read() fulfills');
+
+ reader.releaseLock();
+
+ assert_equals(reader.closed, readerClosed, 'reader.closed is the same after releasing the lock');
+
+ const newReader = stream.getReader();
+ return newReader.read();
+ });
+
+ assert_equals(reader.closed, readerClosed, 'reader.closed is the same after calling read()');
+
+ return promise;
+
+ }, 'reader\'s closed property always returns the same promise');
+};

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