public function testRulesKey()
{
$request = new Request();
$this->assertArrayHasKey('username', $request->rules());
$this->assertArrayHasKey('password', $request->rules());
$this->assertArrayHasKey('captcha', $request->rules());
}
/**
* Get the needed authorization credentials from the request.
*
* @param \Illuminate\Http\Request $request
* @return array
*/
protected function getCredentials(AuthRequest $request)
{
return $request->only($this->loginUsername(), 'password');
}