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// |reftest| module async
// Copyright (C) 2018 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Module is evaluated exactly once
esid: sec-moduleevaluation
info: |
[...]
4. If module.[[Evaluated]] is true, return undefined.
5. Set module.[[Evaluated]] to true.
6. For each String required that is an element of module.[[RequestedModules]] do,
a. Let requiredModule be ? HostResolveImportedModule(module, required).
b. Perform ? requiredModule.ModuleEvaluation().
[...]
This test is meant to be flagged as module code, it should not initially
run as script code or the result will not be the same.
includes: [fnGlobalObject.js]
flags: [async, module]
features: [dynamic-import]
---*/
var global = fnGlobalObject();
if (typeof global.evaluated === 'undefined') {
global.evaluated = 0;
}
global.evaluated++;
Promise.all([
import('./eval-self-once-module.js'),
import('./eval-self-once-module.js'),
]).then(async () => {
// Use await to serialize imports
await import('./eval-self-once-module.js');
await import('./eval-self-once-module.js');
assert.sameValue(global.evaluated, 1, 'global property was defined and incremented only once');
}).then($DONE, $DONE);