Mocha (JavaScript framework)

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Mocha
Initial release22 November 2011 (2011-11-22)
Stable release
3.1.2 / 10 October 2016; 7 years ago (2016-10-10)
Repository
Written inJavaScript
TypeTest automation framework
LicenseMIT
Websitemochajs.org

Mocha is a JavaScript test framework running on node.js, featuring browser support, asynchronous testing, test coverage reports, and use of any assertion library.

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
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

References

External links