mirror of https://github.com/tc39/test262.git
92 lines
2.4 KiB
JavaScript
92 lines
2.4 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/async-generators/yield-star-next-non-object-ignores-then.case
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// - src/async-generators/default/async-class-expr-method.template
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/*---
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description: If next() value is not-object, do not access respective then property (Async generator method as a ClassExpression element)
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esid: prod-AsyncGeneratorMethod
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features: [Symbol.asyncIterator, async-iteration]
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flags: [generated, async]
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info: |
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ClassElement :
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MethodDefinition
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MethodDefinition :
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AsyncGeneratorMethod
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Async Generator Function Definitions
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AsyncGeneratorMethod :
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async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
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YieldExpression: yield * AssignmentExpression
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...
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6. Repeat
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a. If received.[[Type]] is normal, then
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ii. Let innerResult be ? Invoke(iterator, "next",
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« received.[[Value]] »).
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iii. If generatorKind is async, then set innerResult to
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? Await(innerResult).
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iv. If Type(innerResult) is not Object, throw a TypeError exception.
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...
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Await
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...
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2. Let promiseCapability be ! NewPromiseCapability(%Promise%).
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3. Perform ! Call(promiseCapability.[[Resolve]], undefined, « promise »).
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...
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Promise Resolve Functions
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...
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7. If Type(resolution) is not Object, then
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a. Return FulfillPromise(promise, resolution).
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8. Let then be Get(resolution, "then").
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...
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---*/
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Number.prototype.then = function() {
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throw new Test262Error('Number#then should not be used');
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};
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var obj = {
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get [Symbol.iterator]() {
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throw new Test262Error('it should not get Symbol.iterator');
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},
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[Symbol.asyncIterator]() {
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return {
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next() {
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return 42;
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}
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};
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}
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};
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var callCount = 0;
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var C = class { async *gen() {
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callCount += 1;
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yield* obj;
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throw new Test262Error('abrupt completion closes iter');
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}}
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var gen = C.prototype.gen;
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var iter = gen();
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iter.next().then(() => {
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throw new Test262Error('Promise incorrectly fulfilled.');
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}, v => {
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assert.sameValue(v.constructor, TypeError, 'TypeError');
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iter.next().then(({ done, value }) => {
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assert.sameValue(done, true, 'the iterator is completed');
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assert.sameValue(value, undefined, 'value is undefined');
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}).then($DONE, $DONE);
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}).catch($DONE);
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assert.sameValue(callCount, 1);
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