Implemented Pet Controller tests with Mockito

src/test/java/org/springframework/samples/petclinic/owner/PetControllerMockito.java

@@ -0,0 +1,98 @@
+package org.springframework.samples.petclinic.owner;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.*;
+
+import org.assertj.core.util.Lists;
+import org.junit.Before;
+import org.junit.Test;
+import org.springframework.ui.ModelMap;
+import org.springframework.validation.BindingResult;
+
+public class PetControllerMockito {
+	private PetRepository pets;
+	private OwnerRepository owners;
+	private PetController controller;
+	private BindingResult result;
+	private ModelMap model;
+	
+	private Owner owner;
+	private Pet pet;
+	
+	private final String VIEWS_PETS_CREATE_OR_UPDATE_FORM = "pets/createOrUpdatePetForm";
+	
+	@Before
+    public void setup() {
+        pets = mock(PetRepository.class);
+        owners = mock(OwnerRepository.class);
+        result = mock(BindingResult.class);
+        model = mock(ModelMap.class);
+        owner = mock(Owner.class);
+		pet = mock(Pet.class);
+        controller = new PetController(pets, owners);
+    }
+	
+	
+	//Verifies method calls when a pet already exists
+	@Test
+	public void testCreationFormError() {
+		when(pet.getName()).thenReturn("FIDO");
+		when(pet.isNew()).thenReturn(true);
+		when(owner.getPet("FIDO", true)).thenReturn(pet);
+		when(result.hasErrors()).thenReturn(true);
+		
+		String redirect = controller.processCreationForm(owner, pet, result, model);
+		
+		//Pet should be added to owner
+		verify(owner).addPet(pet);
+		//Should have an error of a pet with duplicate name
+		verify(result).rejectValue("name", "duplicate", "already exists");
+		//Should set the "pet" of the redirect
+		verify(model).put("pet", pet);
+		//Should not save the pet
+		verify(pets, times(0)).save(anyObject());
+		//should redirect to create/update form
+		assertEquals(redirect, VIEWS_PETS_CREATE_OR_UPDATE_FORM);
+	}
+	
+	@Test 
+	public void testCreationFormSuccess() {
+		when(pet.getName()).thenReturn("FIDO");
+		when(pet.isNew()).thenReturn(false);
+		when(result.hasErrors()).thenReturn(false);
+		
+		String redirect = controller.processCreationForm(owner, pet, result, model);
+		//Should not make an error
+		verify(result, times(0)).rejectValue(anyString(), anyString(), anyString());
+		//Should save the pet to repository
+		verify(pets).save(pet);
+		//Should redirect to a pet page
+		assertEquals(redirect, "redirect:/owners/{ownerId}");
+	}
+	
+	@Test
+	public void testUpdateFormError() {
+		when(result.hasErrors()).thenReturn(true);
+		
+		String redirect = controller.processUpdateForm(pet, result, owner, model);
+		//Pet's owner should be set
+		verify(pet).setOwner(owner);
+		//Should set the "pet" of the redirect
+        verify(model).put("pet", pet);
+        assertEquals(redirect, VIEWS_PETS_CREATE_OR_UPDATE_FORM);
+	}
+	
+	@Test
+	public void testUpdateFormSuccess() {
+		when(result.hasErrors()).thenReturn(false);
+		
+		String redirect = controller.processUpdateForm(pet, result, owner, model);
+		//Pet should be added to owner
+		verify(owner).addPet(pet);
+		//Should save the pet to repository
+		verify(pets).save(pet);
+		//Should redirect to an owner page
+        assertEquals(redirect, "redirect:/owners/{ownerId}");
+	}
+}