Easy testing of time-dependent code.
npm install timekeeperThis module mocks Date and Date.now in order to help you test time-dependent code. It provides travel and freeze functionality for your Node.js tests.
``sh`
npm install --save-dev timekeeper
`js
var tk = require('timekeeper');
var time = new Date(1330688329321);
tk.freeze(time);
// The time hasn't changed at all.
var date = new Date;
var ms = Date.now();
tk.reset(); // Reset.
`
`js
var tk = require('timekeeper');
var time = new Date(1893448800000); // January 1, 2030 00:00:00
tk.travel(time); // Travel to that date.
setTimeout(function() {
// time + ~500 ms.
var date = new Date;
var ms = Date.now();
tk.reset(); // Reset.
}, 500);
`
Note: If traveling when time is frozen, the time will be frozen to the new traveled time.
`js
var tk = require('timekeeper');
var time = new Date(1893448800000); // January 1, 2030 00:00:00
assertFalse(tk.isKeepingTime());
tk.travel(time);
assertTrue(tk.isKeepingTime());
``
Inspired by the timecop ruby gem.
MIT License
Copyright (C) 2012 Veselin Todorov
Copyright (C) 2018, 2019, 2023 Linus Unnebäck
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
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The above copyright notice and this permission notice shall be included in all
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