randomized mock data tests

output.txt

$ mocha test.js

  ․

  0 passing (4ms)
  1 failing

  1) RandomStuff should work for all of mockData:
     Error: 2/6 failed
      at Context.<anonymous> (/Users/benglish/testcrap.js:26:19)
      at Test.Runnable.run (/Users/benglish/nodes/0.10.23/lib/node_modules/mocha/lib/runnable.js:221:32)
      at Runner.runTest (/Users/benglish/nodes/0.10.23/lib/node_modules/mocha/lib/runner.js:374:10)
      at /Users/benglish/nodes/0.10.23/lib/node_modules/mocha/lib/runner.js:452:12
      at next (/Users/benglish/nodes/0.10.23/lib/node_modules/mocha/lib/runner.js:299:14)
      at /Users/benglish/nodes/0.10.23/lib/node_modules/mocha/lib/runner.js:309:7
      at next (/Users/benglish/nodes/0.10.23/lib/node_modules/mocha/lib/runner.js:247:23)
      at Object._onImmediate (/Users/benglish/nodes/0.10.23/lib/node_modules/mocha/lib/runner.js:276:5)
      at processImmediate [as _immediateCallback] (timers.js:330:15)


$

test.js

describe('RandomStuff', function(){
    var mockData;

    before(function(){
        mockData = [
            {name: 'bob'},
            {name: 'bob'},
            {name: 'bob'},
            {name: 'bill'},
            {name: 'bill'},
            {name: 'bob'},
        ];
    });

    it('should work for all of mockData', function(){
        var errors = [];
        shuffleArray(mockData).forEach(function(datum){
            try {
                // do some test on the datum, make some assertions
                console.assert(datum.name === 'bob');
            } catch (err) {
                errors.push(err);
            }
        });
        if(errors.length > 0) {
            throw new Error(errors.length+'/'+mockData.length+' failed');
        }
    });
});


function shuffleArray(array) {
    for (var i = array.length - 1; i > 0; i--) {
        var j = Math.floor(Math.random() * (i + 1));
        var temp = array[i];
        array[i] = array[j];
        array[j] = temp;
    }
    return array;
}