88 lines
2.5 KiB
JavaScript
88 lines
2.5 KiB
JavaScript
const {test} = require('node:test');
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const assert = require('node:assert');
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const MockTimer = require('../fixtures/mock-timer');
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test('spec', () => {
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const timer = new MockTimer();
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assert.strictEqual(typeof MockTimer, 'function');
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assert.strictEqual(typeof timer, 'object');
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// Most members of MockTimer mimic members of Timer.
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assert.strictEqual(typeof timer.startTime, 'number');
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assert.strictEqual(typeof timer.time, 'function');
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assert.strictEqual(typeof timer.start, 'function');
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assert.strictEqual(typeof timer.timeElapsed, 'function');
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assert.strictEqual(typeof timer.setTimeout, 'function');
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assert.strictEqual(typeof timer.clearTimeout, 'function');
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// A few members of MockTimer have no Timer equivalent and should only be used in tests.
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assert.strictEqual(typeof timer.advanceMockTime, 'function');
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assert.strictEqual(typeof timer.advanceMockTimeAsync, 'function');
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assert.strictEqual(typeof timer.hasTimeouts, 'function');
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});
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test('time', () => {
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const timer = new MockTimer();
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const delta = 1;
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const time1 = timer.time();
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const time2 = timer.time();
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timer.advanceMockTime(delta);
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const time3 = timer.time();
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assert.strictEqual(time1, time2);
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assert.strictEqual(time2 + delta, time3);
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});
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test('start / timeElapsed', () => new Promise(resolve => {
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const timer = new MockTimer();
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const halfDelay = 1;
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const fullDelay = halfDelay + halfDelay;
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timer.start();
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let timeoutCalled = 0;
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// Wait and measure timer
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timer.setTimeout(() => {
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assert.strictEqual(timeoutCalled, 0);
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++timeoutCalled;
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const timeElapsed = timer.timeElapsed();
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assert.strictEqual(timeElapsed, fullDelay);
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resolve();
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}, fullDelay);
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// this should not trigger the callback
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timer.advanceMockTime(halfDelay);
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// give the mock timer a chance to run tasks
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global.setTimeout(() => {
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// we've only mock-waited for half the delay so it should not have run yet
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assert.strictEqual(timeoutCalled, 0);
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// this should trigger the callback
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timer.advanceMockTime(halfDelay);
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}, 0);
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}));
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test('clearTimeout / hasTimeouts', () => new Promise((resolve, reject) => {
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const timer = new MockTimer();
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const timeoutId = timer.setTimeout(() => {
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reject(new Error('Canceled task ran'));
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}, 1);
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timer.setTimeout(() => {
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resolve('Non-canceled task ran');
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}, 2);
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timer.clearTimeout(timeoutId);
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while (timer.hasTimeouts()) {
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timer.advanceMockTime(1);
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}
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}));
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