unroll/examples/jasmine/jasmine-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;
var jasmineReporters = require('jasmine-reporters');

jasmine.getEnv().addReporter(new jasmineReporters.TerminalReporter({
  verbosity: 3,
  color: true,
  showStack: true
}));
unroll.use(it);

describe('[jasmine bdd] maximum of two numbers (without unroll)', function () {
  it('is performed correctly', function (done) {
    expect(Math.max(3, 5)).to.be.equal(5);
    expect(Math.max(7, 0)).to.be.equal(7);
    done();
  });
});

describe('[jasmine bdd] maximum of two numbers (unrolled)', function () {
  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',
    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 (non-callback style)',
    function (testArgs) {
      expect(
        Math.max(testArgs.a, testArgs.b)
      ).to.be.equal(testArgs.c);
    },

    [
      ['a', 'b', 'c'],
      [3, 5, 5],
      [7, 0, 7]
      /* change last entry to [7, 0, 0] to see failure */
    ]
  );
});