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Add tests for Promises rejection queue (#1029) 

* Add tests for Promises rejection queue

These basic tests assert the rejection is captured but a later queued job
from a chain of then calls.

* fixup! Add tests for Promises rejection queue
This commit is contained in:
Leo Balter 2017-05-10 12:59:18 -04:00 committed by Rick Waldron
parent 947bf6d3e2
commit f6175af556
3 changed files with 175 additions and 0 deletions
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54
test/built-ins/Promise/reject-via-abrupt-queue.js Normal file
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// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Rejecting through an abrupt completion - captured in a queued job
esid: sec-promise-executor
info: |
25.4.3.1 Promise ( executor )
...
9. Let completion be Call(executor, undefined, « resolvingFunctions.[[Resolve]],
resolvingFunctions.[[Reject]] »).
10. If completion is an abrupt completion, then
a. Perform ? Call(resolvingFunctions.[[Reject]], undefined, « completion.[[Value]] »).
11. Return promise.
25.4.1.3.1 Promise Reject Functions
...
6. Return RejectPromise(promise, reason).
25.4.5.3.1 PerformPromiseThen ( promise, onFulfilled, onRejected, resultCapability )
...
4. If IsCallable(onRejected) is false, then
a. Set onRejected to undefined.
...
6. Let rejectReaction be the PromiseReaction { [[Capability]]: resultCapability,
[[Type]]: "Reject", [[Handler]]: onRejected }.
...
9. Else,
a. Assert: The value of promise.[[PromiseState]] is "rejected".
...
d. Perform EnqueueJob("PromiseJobs", PromiseReactionJob, « rejectReaction, reason »).
flags: [async]
---*/
var thenable = Promise.resolve();
var p = new Promise(function() {
throw thenable;
});
p.then(function() {
$DONE('The promise should not be fulfilled.');
}).then(function() {
$DONE('The promise should not be fulfilled.');
}, function(x) {
if (x !== thenable) {
$DONE('The promise should be rejected with the resolution value.');
return;
}
$DONE();
});

62
test/built-ins/Promise/reject-via-fn-deferred-queue.js Normal file
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// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Rejecting through deferred invocation of the provided resolving function,
captured in a queued job.
esid: sec-promise-executor
info: |
25.4.3.1 Promise ( executor )
...
9. Let completion be Call(executor, undefined, « resolvingFunctions.[[Resolve]],
resolvingFunctions.[[Reject]] »).
10. If completion is an abrupt completion, then
a. Perform ? Call(resolvingFunctions.[[Reject]], undefined, « completion.[[Value]] »).
11. Return promise.
25.4.1.3.1 Promise Reject Functions
...
6. Return RejectPromise(promise, reason).
25.4.5.3.1 PerformPromiseThen ( promise, onFulfilled, onRejected, resultCapability )
...
4. If IsCallable(onRejected) is false, then
a. Set onRejected to undefined.
...
6. Let rejectReaction be the PromiseReaction { [[Capability]]: resultCapability,
[[Type]]: "Reject", [[Handler]]: onRejected }.
7. If promise.[[PromiseState]] is "pending", then
...
b. Append rejectReaction as the last element of the List that is
promise.[[PromiseRejectReactions]].
...
flags: [async]
---*/
var thenable = Promise.resolve();
var returnValue = null;
var reject;
var p = new Promise(function(_, _reject) {
reject = _reject;
});
p.then(function() {
$DONE('The promise should not be fulfilled.');
}).then(function() {
$DONE('The promise should not be fulfilled.');
}, function(x) {
if (x !== thenable) {
$DONE('The promise should be rejected with the resolution value.');
return;
}
$DONE();
});
returnValue = reject(thenable);
assert.sameValue(returnValue, undefined, '"reject" function return value');

59
test/built-ins/Promise/reject-via-fn-immed-queue.js Normal file
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// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Rejecting through immediate invocation of the provided resolving function,
captured in a queued job.
esid: sec-promise-executor
info: |
25.4.3.1 Promise ( executor )
...
9. Let completion be Call(executor, undefined, « resolvingFunctions.[[Resolve]],
resolvingFunctions.[[Reject]] »).
10. If completion is an abrupt completion, then
a. Perform ? Call(resolvingFunctions.[[Reject]], undefined, « completion.[[Value]] »).
11. Return promise.
25.4.1.3.1 Promise Reject Functions
...
6. Return RejectPromise(promise, reason).
25.4.5.3.1 PerformPromiseThen ( promise, onFulfilled, onRejected, resultCapability )
...
4. If IsCallable(onRejected) is false, then
a. Set onRejected to undefined.
...
6. Let rejectReaction be the PromiseReaction { [[Capability]]: resultCapability,
[[Type]]: "Reject", [[Handler]]: onRejected }.
...
9. Else,
a. Assert: The value of promise.[[PromiseState]] is "rejected".
...
d. Perform EnqueueJob("PromiseJobs", PromiseReactionJob, « rejectReaction, reason »).
flags: [async]
---*/
var thenable = Promise.resolve();
var returnValue = null;
var p = new Promise(function(_, reject) {
returnValue = reject(thenable);
});
assert.sameValue(returnValue, undefined, '"reject" function return value');
p.then(function() {
$DONE('The promise should not be fulfilled.');
}).then(function() {
$DONE('The promise should not be fulfilled.');
}, function(x) {
if (x !== thenable) {
$DONE('The promise should be rejected with the resolution value.');
return;
}
$DONE();
});