public function testCorrectSignup()
{
$model = new SignupForm(['username' => 'some_username', 'email' => '[email protected]', 'password' => 'some_password']);
$user = $model->signup();
expect($user)->isInstanceOf('common\\models\\User');
expect($user->username)->equals('some_username');
expect($user->email)->equals('[email protected]');
expect($user->validatePassword('some_password'))->true();
}