v8/test/mjsunit/async-hooks/promises-async-await.js

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// Copyright 2018 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --expose-async-hooks
// Check for executionAsyncId/triggerAsyncId when chained promises and
// async/await are combined
(function() {
let p;
let outerExecutionAsyncId = -1, outerTriggerAsyncId = -1;
function inIrrelevantContext(resolve) {
resolve(42);
}
function inContext1(foo) {
foo();
}
function inContext2(foo) {
foo();
}
outerExecutionAsyncId = async_hooks.executionAsyncId();
outerTriggerAsyncId = async_hooks.triggerAsyncId();
inContext1(() => {
p = new Promise(resolve => {
assertEquals(outerExecutionAsyncId, async_hooks.executionAsyncId());
assertEquals(outerTriggerAsyncId, async_hooks.triggerAsyncId());
inIrrelevantContext(resolve);
}).then(() => {
assertNotEquals(outerExecutionAsyncId, async_hooks.executionAsyncId());
assertNotEquals(outerTriggerAsyncId, async_hooks.triggerAsyncId());
});
});
inContext2(async () => {
assertEquals(outerExecutionAsyncId, async_hooks.executionAsyncId());
assertEquals(outerTriggerAsyncId, async_hooks.triggerAsyncId());
await p;
assertNotEquals(outerExecutionAsyncId, async_hooks.executionAsyncId());
assertNotEquals(outerTriggerAsyncId, async_hooks.triggerAsyncId());
});
})();