@Test
    void souldRegisterNewUser() throws Exception{
    User u = new User();
    u.setUsername("user432");
    u.setPassword("user123123");
    u.setPasswordConfirm("user123123");

    this.mockMvc.perform(post("/registration")
            .param("username",u.getUsername())
            .param("password",u.getPassword())
            .param("passwordConfirm",u.getPasswordConfirm()))
            .andExpect(status().isFound())
            .andExpect(redirectedUrl("/index"))
            .andExpect(flash().attribute("register", Matchers.equalTo("true")));
    }

    @Test
    void souldNotRegisterNewUserBecousePasswordIsBad() throws Exception{
        User u = new User();
        u.setUsername("user432");
        u.setPassword("user1231231");
        u.setPasswordConfirm("user123123");

        this.mockMvc.perform(post("/registration")
                .param("username",u.getUsername())
                .param("password",u.getPassword())
                .param("passwordConfirm",u.getPasswordConfirm()))
                .andExpect(status().isFound())
                .andExpect(redirectedUrl("/index"))
                .andExpect(flash().attribute("error",Matchers.equalTo("password")));
    }