Mocha: Manually import / require describe it etc?

Created on 28 Aug 2015 · 4Comments · Source: mochajs/mocha

Is there anyway to manually import / require functions like describe and it?
I'd like to use mocha without the commandline interface, in a regular browser. (I'm using JSPM as dependency manager)
I couldn't find documentation on this on the Mocha website.

Source

peteruithoven

👍5

Most helpful comment

@peteruithoven see here for using mocha in browser: https://mochajs.org/#running-mocha-in-the-browser

and you can do like this:

// es5 style
var testCase = require('mocha').describe;
var pre = require('mocha').before;
var assertions = require('mocha').it;
var assert = require('assert');

testCase('Array', function() {
  pre(function() {
    // ...
  });

  testCase('#indexOf()', function() {
    assertions('should return -1 when not present', function() {
      assert.equal([1,2,3].indexOf(4), -1);
    });
  });
});

// code ....

///es6 style with jspm(systemjs)

import { describe, before, it } from 'mocha';
import assert from 'assert';

describe('Array', function() {
  before(function() {
    // ...
  });

  describe('#indexOf()', function() {
    it('should return -1 when not present', function() {
      assert.equal([1,2,3].indexOf(4), -1);
    });
  });
});

SerkanSipahi on 29 Aug 2015

👍4

All 4 comments

@peteruithoven see here for using mocha in browser: https://mochajs.org/#running-mocha-in-the-browser

and you can do like this:

// es5 style
var testCase = require('mocha').describe;
var pre = require('mocha').before;
var assertions = require('mocha').it;
var assert = require('assert');

testCase('Array', function() {
  pre(function() {
    // ...
  });

  testCase('#indexOf()', function() {
    assertions('should return -1 when not present', function() {
      assert.equal([1,2,3].indexOf(4), -1);
    });
  });
});

// code ....

///es6 style with jspm(systemjs)

import { describe, before, it } from 'mocha';
import assert from 'assert';

describe('Array', function() {
  before(function() {
    // ...
  });

  describe('#indexOf()', function() {
    it('should return -1 when not present', function() {
      assert.equal([1,2,3].indexOf(4), -1);
    });
  });
});

SerkanSipahi on 29 Aug 2015

👍4

Ah thanks, the extra examples you added where the docs I was missing.

I'm not able to get your JSPM(SystemJS) example working though, are you sure you've included all the details? Is there more info elsewhere?
Do I need to call setup() somewhere? The following piece of code looks hopeful, but I don't know that
pre-require event.
https://github.com/mochajs/mocha/blob/master/lib/mocha.js#L99

I've created a very minimal example of what I tried:
https://github.com/peteruithoven/jspm-mocha

peteruithoven on 31 Aug 2015

Anyone?

peteruithoven on 22 Sep 2015

see #956 for further discussion