diff options
Diffstat (limited to 'testing/web-platform/tests/streams/resources/test-utils.js')
-rw-r--r-- | testing/web-platform/tests/streams/resources/test-utils.js | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/testing/web-platform/tests/streams/resources/test-utils.js b/testing/web-platform/tests/streams/resources/test-utils.js new file mode 100644 index 0000000000..a38f78027b --- /dev/null +++ b/testing/web-platform/tests/streams/resources/test-utils.js @@ -0,0 +1,27 @@ +'use strict'; + +self.delay = ms => new Promise(resolve => step_timeout(resolve, ms)); + +// For tests which verify that the implementation doesn't do something it shouldn't, it's better not to use a +// timeout. Instead, assume that any reasonable implementation is going to finish work after 2 times around the event +// loop, and use flushAsyncEvents().then(() => assert_array_equals(...)); +// Some tests include promise resolutions which may mean the test code takes a couple of event loop visits itself. So go +// around an extra 2 times to avoid complicating those tests. +self.flushAsyncEvents = () => delay(0).then(() => delay(0)).then(() => delay(0)).then(() => delay(0)); + +self.assert_typed_array_equals = (actual, expected, message) => { + const prefix = message === undefined ? '' : `${message} `; + assert_equals(typeof actual, 'object', `${prefix}type is object`); + assert_equals(actual.constructor, expected.constructor, `${prefix}constructor`); + assert_equals(actual.byteOffset, expected.byteOffset, `${prefix}byteOffset`); + assert_equals(actual.byteLength, expected.byteLength, `${prefix}byteLength`); + assert_equals(actual.buffer.byteLength, expected.buffer.byteLength, `${prefix}buffer.byteLength`); + assert_array_equals([...actual], [...expected], `${prefix}contents`); + assert_array_equals([...new Uint8Array(actual.buffer)], [...new Uint8Array(expected.buffer)], `${prefix}buffer contents`); +}; + +self.makePromiseAndResolveFunc = () => { + let resolve; + const promise = new Promise(r => { resolve = r; }); + return [promise, resolve]; +}; |