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103 lines
3 KiB
TypeScript
103 lines
3 KiB
TypeScript
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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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import { assertEquals, unitTest } from "./test_util.ts";
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unitTest(
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{ perms: { read: true, run: true, hrtime: true } },
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async function flockFileSync() {
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const path = "cli/tests/testdata/fixture.json";
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const script = (exclusive: boolean, wait: number) => `
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const { rid } = Deno.openSync("${path}");
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Deno.flockSync(rid, ${exclusive ? "true" : "false"});
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await new Promise(res => setTimeout(res, ${wait}));
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Deno.funlockSync(rid);
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`;
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const run = (e: boolean, w: number) =>
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Deno.run({ cmd: [Deno.execPath(), "eval", "--unstable", script(e, w)] });
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const firstBlocksSecond = async (
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first: boolean,
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second: boolean,
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): Promise<boolean> => {
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const firstPs = run(first, 1000);
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await new Promise((res) => setTimeout(res, 250));
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const start = performance.now();
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const secondPs = run(second, 0);
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await secondPs.status();
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const didBlock = (performance.now() - start) > 500;
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firstPs.close();
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secondPs.close();
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return didBlock;
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};
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assertEquals(
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await firstBlocksSecond(true, false),
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true,
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"exclusive blocks shared",
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);
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assertEquals(
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await firstBlocksSecond(false, true),
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true,
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"shared blocks exclusive",
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);
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assertEquals(
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await firstBlocksSecond(true, true),
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true,
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"exclusive blocks exclusive",
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);
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assertEquals(
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await firstBlocksSecond(false, false),
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false,
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"shared does not block shared",
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);
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},
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);
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unitTest(
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{ perms: { read: true, run: true, hrtime: true } },
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async function flockFileAsync() {
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const path = "cli/tests/testdata/fixture.json";
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const script = (exclusive: boolean, wait: number) => `
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const { rid } = await Deno.open("${path}");
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await Deno.flock(rid, ${exclusive ? "true" : "false"});
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await new Promise(res => setTimeout(res, ${wait}));
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await Deno.funlock(rid);
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`;
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const run = (e: boolean, w: number) =>
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Deno.run({ cmd: [Deno.execPath(), "eval", "--unstable", script(e, w)] });
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const firstBlocksSecond = async (
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first: boolean,
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second: boolean,
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): Promise<boolean> => {
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const firstPs = run(first, 1000);
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await new Promise((res) => setTimeout(res, 250));
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const start = performance.now();
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const secondPs = run(second, 0);
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await secondPs.status();
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const didBlock = (performance.now() - start) > 500;
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firstPs.close();
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secondPs.close();
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return didBlock;
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};
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assertEquals(
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await firstBlocksSecond(true, false),
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true,
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"exclusive blocks shared",
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);
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assertEquals(
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await firstBlocksSecond(false, true),
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true,
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"shared blocks exclusive",
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);
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assertEquals(
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await firstBlocksSecond(true, true),
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true,
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"exclusive blocks exclusive",
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);
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assertEquals(
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await firstBlocksSecond(false, false),
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false,
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"shared does not block shared",
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);
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},
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);
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