61 lines
1.6 KiB
JavaScript
61 lines
1.6 KiB
JavaScript
const {test} = require('node:test');
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const assert = require('node:assert');
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const Timer = require('../../src/util/timer');
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// Stubbed current time
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let NOW = 0;
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const testNow = {
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now: () => {
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NOW += 100;
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return NOW;
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}
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};
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test('spec', () => {
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const timer = new Timer(testNow);
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assert.strictEqual(typeof Timer, 'function');
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assert.strictEqual(typeof timer, 'object');
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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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});
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test('time', () => {
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const timer = new Timer(testNow);
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const time = timer.time();
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assert.ok(testNow.now() >= time);
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});
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test('start / timeElapsed', () => {
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const timer = new Timer(testNow);
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const delay = 100;
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const threshold = 1000 / 60; // 60 hz
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// Start timer
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timer.start();
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// Measure timer
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const timeElapsed = timer.timeElapsed();
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assert.ok(timeElapsed >= 0);
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assert.ok(timeElapsed >= (delay - threshold) &&
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timeElapsed <= (delay + threshold));
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});
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test('setTimeout / clearTimeout', () => new Promise((resolve, reject) => {
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const timer = new Timer(testNow);
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const cancelId = 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(cancelId);
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}));
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