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denoland-deno/cli/js/tests/performance_test.ts
Bartek Iwańczuk 68119e1d7e
reorg: move js runtime tests to cli/js/tests/ (#4250)
All Deno runtime test files were moved to cli/js/tests/ directory.

It makes a clear distinction that cli/js/tests/ contains code
that is run under Deno runtime as opposed to code in cli/js/ which
is used to create bundle and snapshot with "deno_typescript".
2020-03-10 01:06:47 +01:00

15 lines
466 B
TypeScript

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { unitTest, assert, createResolvable } from "./test_util.ts";
unitTest({ perms: { hrtime: false } }, async function performanceNow(): Promise<
void
> {
const resolvable = createResolvable();
const start = performance.now();
setTimeout((): void => {
const end = performance.now();
assert(end - start >= 10);
resolvable.resolve();
}, 10);
await resolvable;
});