function test_login_incorrect_user_pass()
    {
        $_POST = array(
            'user' => 'd',
            'pass' => 'aa',
            'Submit' => 'Submit');

        $usr = new ctrl_users();

        $usr->login();
        $result = $usr->display_outer(true);

    // Check that form is redisplayed with invalid user/pass error 
        $this->assertEquals(preg_match("/<div\ +id=\"errors\">/", $result), 1);

        $this->assertEquals(preg_match
            ("/<li>Username or password is incorrect<\/li>/", $result), 1);

        $this->assertEquals(preg_match("/<form .+ id=\"login\">/", $result), 1);
    }