124 lines
3.2 KiB
JavaScript
124 lines
3.2 KiB
JavaScript
/* globals describe, it */
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var sleep = require('./');
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var assert = require('assert');
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var child_process = require('child_process');
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function assertApproxEqual(val1, val2) {
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// We require accuracy to the nearest N millisecond.
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// Windows Sleep is not super accurate (depends on scheduling policy) so use a high value.
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var epsilon = 100;
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var diff = val1 - val2;
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if (diff > epsilon) {
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assert.fail('wait was too long: ' + diff + ' > ' + epsilon);
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} else if (diff < -epsilon) {
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assert.fail('wait was too long: ' + diff + ' < ' + -epsilon);
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}
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}
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describe('sleep', function () {
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it('works for normal input', function () {
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var sleepTime = 1;
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var start = new Date();
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sleep.sleep(sleepTime);
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var end = new Date();
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assertApproxEqual(end - start, sleepTime * 1000);
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});
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it('works for zero', function () {
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var sleepTime = 0;
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var start = new Date();
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sleep.sleep(sleepTime);
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var end = new Date();
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assertApproxEqual(end - start, sleepTime * 1000);
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});
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it('does not allow negative numbers', function () {
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assert.throws(function () {
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sleep.sleep(-1);
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});
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});
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it('works with child_process', function () {
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var sleepTime = 1;
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child_process.exec('echo', function (err, stdout, stderr) { });
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var start = new Date();
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sleep.sleep(sleepTime);
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var end = new Date();
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assertApproxEqual(end - start, sleepTime * 1000);
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});
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});
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describe('usleep', function () {
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it('works for values smaller than a second', function () {
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var sleepTime = 250;
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var start = new Date();
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sleep.usleep(sleepTime);
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var end = new Date();
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assertApproxEqual(end - start, sleepTime / 1000);
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});
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it('works for zero', function () {
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var sleepTime = 0;
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var start = new Date();
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sleep.usleep(sleepTime);
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var end = new Date();
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assertApproxEqual(end - start, sleepTime / 1000);
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});
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it('works for values larger than a second', function () {
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this.timeout(4000); // necessary for mocha to not complain
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var sleepTime = 3000000;
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var start = new Date();
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sleep.usleep(sleepTime);
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var end = new Date();
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assertApproxEqual(end - start, sleepTime / 1000);
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});
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it('does not allow negative numbers', function () {
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assert.throws(function () {
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sleep.usleep(-100);
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});
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});
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});
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describe('msleep', function () {
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it('works for normal input', function() {
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var sleepTime = 1;
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var start = new Date();
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sleep.msleep(sleepTime);
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var end = new Date();
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assertApproxEqual(end - start, sleepTime);
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});
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it('works for zero', function () {
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var sleepTime = 0;
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var start = new Date();
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sleep.msleep(sleepTime);
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var end = new Date();
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assertApproxEqual(end - start, sleepTime);
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});
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it('does not allow negative numbers', function () {
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assert.throws(function () {
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sleep.msleep(-100);
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});
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});
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it('does not allow decimal numbers', function () {
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assert.throws(function () {
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sleep.msleep(1.5);
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});
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});
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});
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describe('error', function () {
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it('should throw a valid error', function () {
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try {
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sleep.msleep(Infinity);
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}
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catch (e) {
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assert.equal(e.message, 'Expected number of miliseconds');
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}
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});
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});
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