mirror of
https://github.com/oven-sh/bun
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73a55cf075
* run-eval.test.ts * transpiler-cache.test.ts * node net * some open things * a * a * yikes * incredible * run it back * a * this code is what i like to call, incorrect * ok its all worng * remove an assertion that is wrong again * update test things and rebase * performance test * mark filesink with mkfifo as todo. see #8166 * hehe * not done * awa * fs test pass --------- Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com> Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>
60 lines
1.9 KiB
JavaScript
60 lines
1.9 KiB
JavaScript
import { expect, it } from "bun:test";
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import { isWindows } from "harness";
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it("performance.now() should be monotonic", () => {
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const first = performance.now();
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const second = performance.now();
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const third = performance.now();
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const fourth = performance.now();
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const fifth = performance.now();
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const sixth = performance.now();
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if (isWindows) {
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// Timer precision is monotonic on Windows, but it is 100ns of precision
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// making it extremely easy to hit overlapping timer values here.
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expect(first).toBeLessThanOrEqual(second);
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expect(second).toBeLessThanOrEqual(third);
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expect(third).toBeLessThanOrEqual(fourth);
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expect(fourth).toBeLessThanOrEqual(fifth);
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expect(fifth).toBeLessThanOrEqual(sixth);
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Bun.sleepSync(0.001);
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} else {
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expect(first).toBeLessThan(second);
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expect(second).toBeLessThan(third);
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expect(third).toBeLessThan(fourth);
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expect(fourth).toBeLessThan(fifth);
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expect(fifth).toBeLessThan(sixth);
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}
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expect(Bun.nanoseconds()).toBeGreaterThan(0);
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expect(Bun.nanoseconds()).toBeGreaterThan(sixth);
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expect(Bun.nanoseconds()).toBeNumber(true);
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});
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it("performance.timeOrigin + performance.now() should be similar to Date.now()", () => {
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expect(Math.abs(performance.timeOrigin + performance.now() - Date.now()) < 1000).toBe(true);
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});
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// https://github.com/oven-sh/bun/issues/5604
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it("performance.now() DOMJIT", () => {
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// This test is very finnicky.
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// It has to return true || return false to reproduce. Throwing an error doesn't work.
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function run(start, prev) {
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while (true) {
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const current = performance.now();
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if (Number.isNaN(current) || current < prev) {
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return false;
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}
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if (current - start > 200) {
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return true;
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}
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prev = current;
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}
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}
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const start = performance.now();
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if (!run(start, start)) {
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throw new Error("performance.now() is not monotonic");
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}
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});
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