These block would be cleaner written like this:

``` javascript
it('reject an array of file/regex pairs when one file\'s content does matches its corresponding regex', function () {
  var arg = [
    ['testFile', /Roses are red/],
    ['testFile2', /Violets are orange/]
  ];
  assert.throws(helpers.assertNoFileContent.bind(helpers, arg));
});
```