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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import { assert, assertEquals, assertInstanceOf, assertNotEquals, assertRejects, assertStrictEquals,} from "../assert/mod.ts";import { FakeTime, TimeError } from "./time.ts";import { _internals } from "./_time.ts";import { assertSpyCall, spy, type SpyCall } from "./mock.ts";
function fromNow(): () => number { const start: number = Date.now(); return () => Date.now() - start;}
Deno.test("FakeTime doesn't affect Date unchanged if uninitialized", () => { assertStrictEquals(Date, _internals.Date);});
Deno.test("FakeTime fakes Date", () => { { using _time = new FakeTime(9001); assertNotEquals(Date, _internals.Date); } assertStrictEquals(Date, _internals.Date);});
Deno.test("FakeTime causes date parse and UTC behave the same", () => { const expectedUTC = Date.UTC(96, 1, 2, 3, 4, 5); const expectedParse = Date.parse("04 Dec 1995 00:12:00 GMT");
using _time = new FakeTime(); assertEquals( Date.UTC(96, 1, 2, 3, 4, 5), expectedUTC, ); assertEquals( Date.parse("04 Dec 1995 00:12:00 GMT"), expectedParse, );});
Deno.test("FakeTime causes Date.now() returns current fake time", () => { const time: FakeTime = new FakeTime(9001); const now = spy(_internals.Date, "now"); try { try { assertEquals(Date.now(), 9001); assertEquals(now.calls.length, 0); time.tick(1523); assertEquals(Date.now(), 10524); assertEquals(now.calls.length, 0); } finally { time.restore(); } assertNotEquals(Date.now(), 10524); assertEquals(now.calls.length, 1); } finally { now.restore(); }});
Deno.test("FakeTime causes Date instance methods passthrough to real Date instance methods", () => { using _time = new FakeTime(); const now = new Date("2020-05-25T05:00:00.12345Z"); assertEquals(now.toISOString(), "2020-05-25T05:00:00.123Z");
const func1 = spy( _internals.Date.prototype, "toISOString", ); try { now.toISOString(); assertSpyCall(func1, 0, { args: [], returned: "2020-05-25T05:00:00.123Z", }); assertInstanceOf(func1.calls?.[0]?.self, _internals.Date); } finally { func1.restore(); }
const func2 = spy( _internals.Date.prototype, Symbol.toPrimitive, ); try { Number(now); assertSpyCall(func2, 0, { args: ["number"], returned: 1590382800123, }); } finally { func2.restore(); }});
Deno.test("FakeTime timeout functions unchanged if FakeTime is uninitialized", () => { assertStrictEquals(setTimeout, _internals.setTimeout); assertStrictEquals(clearTimeout, _internals.clearTimeout);});
Deno.test("FakeTime timeout functions are fake if FakeTime is initialized", () => { { using _time: FakeTime = new FakeTime(); assertNotEquals(setTimeout, _internals.setTimeout); assertNotEquals(clearTimeout, _internals.clearTimeout); } assertStrictEquals(setTimeout, _internals.setTimeout); assertStrictEquals(clearTimeout, _internals.clearTimeout);});
Deno.test("FakeTime only ticks forward when setting now or calling tick", () => { using time: FakeTime = new FakeTime(); const start: number = Date.now();
assertEquals(Date.now(), start); time.tick(5); assertEquals(Date.now(), start + 5); time.now = start + 1000; assertEquals(Date.now(), start + 1000); assert(_internals.Date.now() < start + 1000);});
Deno.test("FakeTime controls timeouts", () => { using time: FakeTime = new FakeTime(); const start: number = Date.now(); const cb = spy(fromNow()); const expected: SpyCall[] = [];
setTimeout(cb, 1000); time.tick(250); assertEquals(cb.calls, expected); time.tick(250); assertEquals(cb.calls, expected); time.tick(500); expected.push({ args: [], returned: 1000 }); assertEquals(cb.calls, expected); time.tick(2500); assertEquals(cb.calls, expected);
setTimeout(cb, 1000, "a"); setTimeout(cb, 2000, "b"); setTimeout(cb, 1500, "c"); assertEquals(cb.calls, expected); time.tick(2500); expected.push({ args: ["a"], returned: 4500 }); expected.push({ args: ["c"], returned: 5000 }); expected.push({ args: ["b"], returned: 5500 }); assertEquals(cb.calls, expected);
setTimeout(cb, 1000, "a"); setTimeout(cb, 1500, "b"); const timeout: number = setTimeout(cb, 1750, "c"); setTimeout(cb, 2000, "d"); time.tick(1250); expected.push({ args: ["a"], returned: 7000 }); assertEquals(cb.calls, expected); assertEquals(Date.now(), start + 7250); clearTimeout(timeout); time.tick(500); expected.push({ args: ["b"], returned: 7500 }); assertEquals(cb.calls, expected); assertEquals(Date.now(), start + 7750); time.tick(250); expected.push({ args: ["d"], returned: 8000 }); assertEquals(cb.calls, expected);});
Deno.test("FakeTime interval functions unchanged if FakeTime is uninitialized", () => { assertStrictEquals(setInterval, _internals.setInterval); assertStrictEquals(clearInterval, _internals.clearInterval);});
Deno.test("FakeTime fakes interval functions", () => { { using _time: FakeTime = new FakeTime(); assertNotEquals(setInterval, _internals.setInterval); assertNotEquals(clearInterval, _internals.clearInterval); } assertStrictEquals(setInterval, _internals.setInterval); assertStrictEquals(clearInterval, _internals.clearInterval);});
Deno.test("FakeTime controls intervals", () => { using time: FakeTime = new FakeTime(); const cb = spy(fromNow()); const expected: SpyCall[] = [];
const interval: number = setInterval(cb, 1000); time.tick(250); assertEquals(cb.calls, expected); time.tick(250); assertEquals(cb.calls, expected); time.tick(500); expected.push({ args: [], returned: 1000 }); assertEquals(cb.calls, expected); time.tick(2500); expected.push({ args: [], returned: 2000 }); expected.push({ args: [], returned: 3000 }); assertEquals(cb.calls, expected);
clearInterval(interval); time.tick(1000); assertEquals(cb.calls, expected);});
Deno.test("FakeTime calls timeout and interval callbacks in correct order", () => { using time: FakeTime = new FakeTime(); const cb = spy(fromNow()); const timeoutCb = spy(cb); const intervalCb = spy(cb); const expected: SpyCall[] = []; const timeoutExpected: SpyCall[] = []; const intervalExpected: SpyCall[] = [];
const interval: number = setInterval(intervalCb, 1000); setTimeout(timeoutCb, 500); time.tick(250); assertEquals(intervalCb.calls, intervalExpected); time.tick(250); setTimeout(timeoutCb, 1000); let expect: SpyCall = { args: [], returned: 500 }; expected.push(expect); timeoutExpected.push(expect); assertEquals(cb.calls, expected); assertEquals(timeoutCb.calls, timeoutExpected); assertEquals(cb.calls, expected); assertEquals(intervalCb.calls, intervalExpected); time.tick(500); expect = { args: [], returned: 1000 }; expected.push(expect); intervalExpected.push(expect); assertEquals(cb.calls, expected); assertEquals(intervalCb.calls, intervalExpected); time.tick(2500); expect = { args: [], returned: 1500 }; expected.push(expect); timeoutExpected.push(expect); expect = { args: [], returned: 2000 }; expected.push(expect); intervalExpected.push(expect); expect = { args: [], returned: 3000 }; expected.push(expect); intervalExpected.push(expect); assertEquals(cb.calls, expected); assertEquals(timeoutCb.calls, timeoutExpected); assertEquals(intervalCb.calls, intervalExpected);
clearInterval(interval); time.tick(1000); assertEquals(cb.calls, expected); assertEquals(timeoutCb.calls, timeoutExpected); assertEquals(intervalCb.calls, intervalExpected);});
Deno.test("FakeTime.restoreFor() restores real time temporarily", async () => { using time: FakeTime = new FakeTime(); const start: number = Date.now();
assertEquals(Date.now(), start); time.tick(1000); assertEquals(Date.now(), start + 1000); assert(_internals.Date.now() < start + 1000); await FakeTime.restoreFor(() => { assert(Date.now() < start + 1000); }); assertEquals(Date.now(), start + 1000); assert(_internals.Date.now() < start + 1000);});
Deno.test("FakeTime.restoreFor() restores real time and re-overridden atomically", async () => { using _time: FakeTime = new FakeTime(); const fakeSetTimeout = setTimeout; const actualSetTimeouts: (typeof setTimeout)[] = [];
const asyncFn = async () => { actualSetTimeouts.push(setTimeout); await Promise.resolve(); actualSetTimeouts.push(setTimeout); await Promise.resolve(); actualSetTimeouts.push(setTimeout); }; const promise = asyncFn(); await new Promise((resolve) => { FakeTime.restoreFor(() => setTimeout(resolve, 0)); }); await promise; assertEquals(actualSetTimeouts, [ fakeSetTimeout, fakeSetTimeout, fakeSetTimeout, ]);});
Deno.test("FakeTime.restoreFor() returns promise that resolved to result of callback", async () => { using _time: FakeTime = new FakeTime();
const resultSync = await FakeTime.restoreFor(() => "a"); assertEquals(resultSync, "a"); const resultAsync = await FakeTime.restoreFor(() => Promise.resolve("b")); assertEquals(resultAsync, "b");});
Deno.test("FakeTime.restoreFor() returns promise that rejected to error in callback", async () => { using _time: FakeTime = new FakeTime();
await assertRejects( () => FakeTime.restoreFor(() => { throw new Error("Error in sync callback"); }), Error, "Error in sync callback", ); await assertRejects( () => FakeTime.restoreFor(() => { return Promise.reject(new Error("Error in async callback")); }), Error, "Error in async callback", );});
Deno.test("FakeTime.restoreFor() returns promise that rejected to TimeError if FakeTime is uninitialized", async () => { await assertRejects( () => FakeTime.restoreFor(() => {}), TimeError, "no fake time", );});
Deno.test("FakeTime.delay() uses real time", async () => { using time: FakeTime = new FakeTime(); const start: number = Date.now();
assertEquals(Date.now(), start); await time.delay(20); assert(_internals.Date.now() >= start + 20); assertEquals(Date.now(), start);});
Deno.test("FakeTime.delay() runs all microtasks before resolving", async () => { using time: FakeTime = new FakeTime();
const seq = []; queueMicrotask(() => seq.push(2)); queueMicrotask(() => seq.push(3)); seq.push(1); await time.delay(20); seq.push(4); assertEquals(seq, [1, 2, 3, 4]);});
Deno.test("FakeTime.delay() works with abort", async () => { using time: FakeTime = new FakeTime();
const seq = []; const abort = new AbortController(); const { signal } = abort; const delayedPromise = time.delay(100, { signal }); seq.push(1); await FakeTime.restoreFor(() => { setTimeout(() => { seq.push(2); abort.abort(); }, 0); }); await assertRejects( () => delayedPromise, DOMException, "Delay was aborted", ); seq.push(3); assertEquals(seq, [1, 2, 3]);});
Deno.test("FakeTime.runMicrotasks() runs all microtasks before resolving", async () => { using time: FakeTime = new FakeTime(); const start: number = Date.now();
const seq = []; queueMicrotask(() => seq.push(2)); queueMicrotask(() => seq.push(3)); seq.push(1); await time.runMicrotasks(); seq.push(4); assertEquals(seq, [1, 2, 3, 4]); assertEquals(Date.now(), start);});
Deno.test("FakeTime.tickAsync() runs all microtasks and runs timers if ticks past due", async () => { using time: FakeTime = new FakeTime(); const start: number = Date.now(); const cb = spy(fromNow()); const expected: SpyCall[] = []; const seq: number[] = [];
setTimeout(cb, 1000); queueMicrotask(() => seq.push(2)); queueMicrotask(() => seq.push(3)); seq.push(1); await time.tickAsync(250); seq.push(4); assertEquals(cb.calls, expected); await time.tickAsync(250); assertEquals(cb.calls, expected); queueMicrotask(() => seq.push(6)); seq.push(5); await time.tickAsync(500); seq.push(7); expected.push({ args: [], returned: 1000 }); assertEquals(cb.calls, expected); assertEquals(Date.now(), start + 1000); assertEquals(seq, [1, 2, 3, 4, 5, 6, 7]);});
Deno.test("FakeTime.next() runs next timer without running microtasks", async () => { using time: FakeTime = new FakeTime(); const start: number = Date.now(); const cb = spy(fromNow()); const seq: number[] = [];
// Callback is called by `next`. setTimeout(cb, 1000); queueMicrotask(() => seq.push(3)); queueMicrotask(() => seq.push(4)); seq.push(1); const hasNextTimer = time.next(); seq.push(2);
assertEquals(hasNextTimer, true); const expectedCalls = [{ args: [] as [], returned: 1000 }]; assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1000); await time.runMicrotasks();
// Callback is already called before `next` called. queueMicrotask(() => seq.push(7)); queueMicrotask(() => seq.push(8)); seq.push(5); const hasNextTimerAfterCalled = time.next(); seq.push(6); await time.runMicrotasks();
assertEquals(hasNextTimerAfterCalled, false); assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1000);
// Callbacks are cleared before `next` called. const id1 = setTimeout(cb, 1000); const id2 = setTimeout(cb, 2000); clearTimeout(id1); clearTimeout(id2); queueMicrotask(() => seq.push(11)); queueMicrotask(() => seq.push(12)); seq.push(9); const hasNextTimerAfterCleared = time.next(); seq.push(10); await time.runMicrotasks();
assertEquals(hasNextTimerAfterCleared, false); assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1000);
// Callback is partially cleared before `next` called. const id3 = setTimeout(cb, 1500); setTimeout(cb, 1500); clearTimeout(id3); queueMicrotask(() => seq.push(15)); queueMicrotask(() => seq.push(16)); seq.push(13); const hasNextTimerAfterPartiallyCleared = time.next(); seq.push(14); await time.runMicrotasks();
assertEquals(hasNextTimerAfterPartiallyCleared, true); const expectedCalls2 = [ { args: [] as [], returned: 1000 }, { args: [] as [], returned: 1000 + 1500 }, ]; assertEquals(cb.calls, expectedCalls2); assertEquals(Date.now(), start + 1000 + 1500);
assertEquals(seq, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]);});
Deno.test("FakeTime.nextAsync() runs all microtasks and next timer", async () => { using time: FakeTime = new FakeTime(); const start: number = Date.now(); const cb = spy(fromNow()); const seq: number[] = [];
// Callback is called by `nextAsync`. setTimeout(cb, 1000); queueMicrotask(() => seq.push(2)); queueMicrotask(() => seq.push(3)); seq.push(1); const hasNextTimer = await time.nextAsync(); seq.push(4);
assertEquals(hasNextTimer, true); const expectedCalls = [{ args: [] as [], returned: 1000 }]; assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1000);
// Callback is already called before `nextAsync` called. queueMicrotask(() => seq.push(6)); queueMicrotask(() => seq.push(7)); seq.push(5); const hasNextTimerAfterCalled = await time.nextAsync(); seq.push(8);
assertEquals(hasNextTimerAfterCalled, false); assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1000);
// Callbacks are cleared before `nextAsync` called. const id1 = setTimeout(cb, 1000); const id2 = setTimeout(cb, 2000); clearTimeout(id1); clearTimeout(id2); queueMicrotask(() => seq.push(10)); queueMicrotask(() => seq.push(11)); seq.push(9); const hasNextTimerAfterCleared = await time.nextAsync(); seq.push(12);
assertEquals(hasNextTimerAfterCleared, false); assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1000);
// Callback is partially cleared before `nextAsync` called. const id3 = setTimeout(cb, 1500); setTimeout(cb, 1500); clearTimeout(id3); queueMicrotask(() => seq.push(14)); queueMicrotask(() => seq.push(15)); seq.push(13); const hasNextTimerAfterPartiallyCleared = await time.nextAsync(); seq.push(16); await time.runMicrotasks();
assertEquals(hasNextTimerAfterPartiallyCleared, true); const expectedCalls2 = [ { args: [] as [], returned: 1000 }, { args: [] as [], returned: 1000 + 1500 }, ]; assertEquals(cb.calls, expectedCalls2); assertEquals(Date.now(), start + 1000 + 1500);
assertEquals(seq, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]);});
Deno.test("FakeTime.runAll() runs all timers without running microtasks", async () => { using time: FakeTime = new FakeTime(); const start: number = Date.now(); const cb = spy(fromNow()); const seq: number[] = [];
setTimeout(cb, 1000); setTimeout(cb, 1500); queueMicrotask(() => seq.push(3)); queueMicrotask(() => seq.push(4)); seq.push(1); time.runAll(); seq.push(2); const expectedCalls = [ { args: [] as [], returned: 1000 }, { args: [] as [], returned: 1500 }, ]; assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1500); await time.runMicrotasks();
queueMicrotask(() => seq.push(7)); queueMicrotask(() => seq.push(8)); seq.push(5); time.runAll(); seq.push(6); await time.runMicrotasks();
assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1500); assertEquals(seq, [1, 2, 3, 4, 5, 6, 7, 8]);});
Deno.test("FakeTime.runAllAsync() runs all microtasks and timers", async () => { using time: FakeTime = new FakeTime(); const start: number = Date.now(); const cb = spy(fromNow()); const seq: number[] = [];
setTimeout(cb, 1000); setTimeout(cb, 1500); queueMicrotask(() => seq.push(2)); queueMicrotask(() => seq.push(3)); seq.push(1); await time.runAllAsync(); seq.push(4); const expectedCalls = [ { args: [] as [], returned: 1000 }, { args: [] as [], returned: 1500 }, ]; assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1500);
queueMicrotask(() => seq.push(6)); queueMicrotask(() => seq.push(7)); seq.push(5); await time.runAllAsync(); seq.push(8);
assertEquals(cb.calls, expectedCalls); assertEquals(Date.now(), start + 1500); assertEquals(seq, [1, 2, 3, 4, 5, 6, 7, 8]);});
const Date_ = Date;
Deno.test("Date from FakeTime is structured cloneable", () => { using _time: FakeTime = new FakeTime(); const date: Date = new Date(); assert(date instanceof Date); assert(date instanceof Date_); const cloned: Date = structuredClone(date); assertEquals(cloned.getTime(), date.getTime()); assert(date instanceof Date); assert(cloned instanceof Date_);});