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43 lines
1.5 KiB
JavaScript
43 lines
1.5 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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author: Caitlin Potter <caitp@igalia.com>
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esid: sec-generator-function-definitions
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description: >
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`yield` is a valid statement within async generator function bodies.
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flags: [async]
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features: [async-iteration]
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---*/
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var g1 = async function*() { yield; };
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var g2 = async function*() { yield 1; };
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var iter1 = g1();
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iter1.next().then(function(result) {
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assert.sameValue(
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result.value, undefined, "Without right-hand-side: first result `value`");
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assert.sameValue(
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result.done, false, "Without right-hand-side: first result `done` flag");
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}).then(undefined, $DONE);
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iter1.next().then(function(result) {
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assert.sameValue(
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result.value, undefined, "Without right-hand-side: second result `value`");
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assert.sameValue(
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result.done, true, "Without right-hand-side: second result `done` flag");
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}).then(undefined, $DONE);
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var iter2 = g2();
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iter2.next().then(function(result) {
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assert.sameValue(
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result.value, 1, "With right-hand-side: first result `value`");
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assert.sameValue(
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result.done, false, "With right-hand-side: first result `done` flag");
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}).then(undefined, $DONE);
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iter2.next().then(function(result) {
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assert.sameValue(
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result.value, undefined, "With right-hand-side: second result `value`");
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assert.sameValue(
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result.done, true, "With right-hand-side: second result `done` flag");
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}).then($DONE, $DONE);
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