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|
| Mocha | |
|---|---|
 | |
| Developer | OpenJS Foundation |
| Initial release | November 22, 2011 |
| Stable release | 11.7.7[1] 
/ 14 June 2026 |
| 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
editMocha can be used with most JavaScript assertion libraries, including:
- should.js
- express.js
- chai
- better-assert
- unexpected
Usage and examples
edit$ 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
edit
References
edit- ^ "Release 11.7.7". 14 June 2026. Retrieved 15 June 2026.
- ^ "Mocha - the fun, simple, flexible JavaScript test framework". mochajs.org.
