Spring controller tests with mocks - spring

Question

So I'm having some issues coming up with a solution for a test.
This is the method I want to test(I'm new to this). It clears all fields on a web page each time it's loaded.
#RequestMapping("/addaddressform")
public String addAddressForm(HttpSession session)
{
session.removeAttribute("firstname");
session.removeAttribute("surname");
session.removeAttribute("phone");
session.removeAttribute("workno");
session.removeAttribute("homeno");
session.removeAttribute("address");
session.removeAttribute("email");
return "simpleforms/addContact";
}
and here's what i have so far for the test
package ControllerTests;
import java.text.AttributedCharacterIterator.Attribute;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mock.web.MockHttpSession;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockHttpServletRequestBuilder;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultHandlers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
#RunWith(SpringJUnit4ClassRunner.class)
#WebAppConfiguration
#ContextConfiguration (classes = {SimpleFormsControllerTest.class})
public class SimpleFormsControllerTest {
#Autowired
private WebApplicationContext wac;
private MockMvc mockMvc;
#Before
public void setup() {
this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();
}
#Test
public void addAddressForm_ExistingContactDetailsInForm_RemovalFromSession() throws Exception{
MockHttpSession mockSession = new MockHttpSession();
mockSession.putValue("firstname", "test");
mockSession.putValue("surname", "test");
mockSession.putValue("phone", "test");
mockSession.putValue("workno", "test");
mockSession.putValue("homeno", "test");
mockSession.putValue("address", "test");
mockSession.putValue("email", "test");
mockMvc.perform(get("simpleForms/addaddressform").session(mockSession));
}
As this is the first time I've ever had to do this kind of thing I don't have much clue where to go with this.

Answer 1

Then you have to do is only assert the values, e.g.:
assertNull(mockSession.getAttribute("firstname"));
If you want to make sure it is the case, you can do:
assertNotNull(mockSession.getAttribute("firstname"));
before you fire the GET request.