| Mocha | |
|---|---|
 | |
| Developer | OpenJS Foundation |
| Initial release | November 22, 2011 (2011-11-22) |
| Stable release | |
| Written in | JavaScript |
| Platform | Node.js |
| Type | Test automation framework |
| License | MIT |
| Website | mochajs |
| Repository | github |
Mocha is a JavaScript test framework for Node.js programs, featuring browser support, asynchronous testing, test coverage reports, and use of any assertion library.2
Assertion libraries
Mocha can be used with most JavaScript assertion libraries, including:
- should.js
- express.js
- chai
- better-assert
- unexpected
Usage and examples
$ npm install -g mocha
$ mkdir test
$ $EDITOR test/test.js # or open with your favorite editor
var assert = require("assert")
describe('Foo', function(){
describe('#getBar(value)', function() {
it('should return 100 when value is negative') // placeholder
it('should return 0 when value is positive', function() {
assert.equal(0, Foo.getBar(10));
})
})
})
$ mocha
.
1 test complete (1ms)
For asynchronous testing, invoke the callback, and Mocha will wait for completion.
describe('Foo', function(){
describe('#bar()', function() {
it('should work without error', function(done) {
var foo = new Foo(128);
foo.bar(done);
})
})
})
See also
See also
References
References
- "Release 11.7.6". 18 May 2026. Retrieved 18 May 2026.
- "Mocha - the fun, simple, flexible JavaScript test framework". mochajs.org.