public function testSingleField()
{
$this->specify('Test confirmation validator with single field.', function () {
$validation = new Validation();
$validation->add('name', new Confirmation(['with' => 'nameWith']));
$messages = $validation->validate(['name' => 'SomeValue', 'nameWith' => 'SomeValue']);
expect($messages->count())->equals(0);
$messages = $validation->validate(['name' => 'SomeValue', 'nameWith' => 'SomeValue123']);
expect($messages->count())->equals(1);
});
}