PhilipBrown\Signature\Tests\AuthTest::should_throw_exception_on_invalid_signature PHP Method

    public function should_throw_exception_on_invalid_signature()
    {
        $this->setExpectedException('PhilipBrown\\Signature\\Exceptions\\SignatureSignatureException');
        $this->params['auth_signature'] = '';
        $auth = new Auth('POST', 'users', $this->params, [new CheckSignature()]);
        $auth->attempt($this->token);
    }