unroll/examples/mocha/mocha-qunit-example.js

A helper tool to easily iterate through test data against a test method with verbose output about each iteration.

var chai = require('chai');
var unroll = require('../../index.js');
var expect = chai.expect;

unroll.use(test);

suite('[mocha qunit] maximum of two numbers (without unroll)');
test('is performed correctly', function (done) {
  expect(Math.max(3, 5)).to.be.equal(5);
  expect(Math.max(7, 0)).to.be.equal(7);
  done();
});

suite('[mocha qunit] maximum of two numbers (unrolled)');
unroll('maximum of #a and #b is #c',
  function (done, testArgs) {
    expect(
      Math.max(testArgs.a, testArgs.b)
    ).to.be.equal(testArgs.c);
    done();
  },
  [
    ['a', 'b', 'c'],
    [3, 5, 5],
    [7, 0, 7]
    /* change last entry to [7, 0, 0] to see failure */
  ]
);

/*
 * The parameters in the title are out of sequence with the passed parameters.
 */
unroll('calculates the maximum of #b and #a (unrolled)',
  function (done, testArgs) {
    expect(
      Math.max(testArgs.a, testArgs.b)
    ).to.be.equal(testArgs.c);
    done();
  },
  [
    ['a', 'b', 'c'],
    [3, 5, 5],
    [7, 0, 7]
    /* change last entry to [7, 0, 0] to see failure */
  ]
);