test262/test/built-ins/Promise/reject-ignored-via-fn-deferred.js
Mike Pennisi 23d566209a Make asynchronous test configuration explicit
For asynchronous tests, the contract between test file and test runner
is implicit: runners are expected to inspect the source code for
references to a global `$DONE` identifier.

Promote a more explicit contract between test file and test runner by
introducing a new frontmatter "tag", `async`. This brings asynchronous
test configuration in-line with other configuration mechanisms and also
provides a more natural means of test filtering.

The modifications to test files was made programatically using the
`grep` and `sed` utilities:

    $ grep "\$DONE" test/ -r --files-with-match --null | \
        xargs -0 sed -i 's/^\(flags:\s*\)\[/\1[async, /g'
    $ grep "\$DONE" test/ -rl --null | \
        xargs -0 grep -E '^flags:' --files-without-match --null | \
        xargs -0 sed -i 's/^---\*\//flags: [async]\n---*\//'
2016-02-12 13:03:19 -05:00

39 lines
1.0 KiB
JavaScript

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Resolved promises ignore rejections through deferred invocation of the
provided resolving function
es6id: 25.4.3.1
info: >
[...]
9. Let completion be Call(executor, undefined,
«resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]]»).
10. If completion is an abrupt completion, then
[...]
11. Return promise.
25.4.1.3.1 Promise Reject Functions
[...]
3. Let alreadyResolved be the value of F's [[AlreadyResolved]] internal
slot.
4. If alreadyResolved.[[value]] is true, return undefined.
flags: [async]
---*/
var thenable = new Promise(function() {});
var resolve, reject;
var p = new Promise(function(_resolve, _reject) {
resolve = _resolve;
reject = _reject;
});
p.then(function() {
$DONE();
}, function() {
$DONE('The promise should not be rejected.');
});
resolve();
reject(thenable);