Add unit tests for PetTypeFormatter parse method

src/test/java/org/springframework/samples/petclinic/PetTypeFormatterTest.java

@@ -0,0 +1,59 @@
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.samples.petclinic.owner.PetType;
+import org.springframework.samples.petclinic.owner.PetTypeFormatter;
+import org.springframework.samples.petclinic.owner.OwnerRepository;
+
+import java.text.ParseException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.BDDMockito.then;
+
+@ExtendWith(MockitoExtension.class)
+class PetTypeFormatterTest {
+
+	@Mock
+	private OwnerRepository ownerRepository;
+
+	@InjectMocks
+	private PetTypeFormatter petTypeFormatter;
+
+	@Test
+	@DisplayName("Test parse method with valid pet type")
+	void testParseWithValidPetType() throws Exception {
+		List<PetType> petTypes = new ArrayList<>();
+		PetType dog = new PetType();
+		dog.setName("Dog");
+		petTypes.add(dog);
+		given(ownerRepository.findPetTypes()).willReturn(petTypes);
+
+		PetType result = petTypeFormatter.parse("Dog", Locale.ENGLISH);
+
+		assertThat(result.getName()).isEqualTo("Dog");
+		then(ownerRepository).should().findPetTypes();
+	}
+
+	@Test
+	@DisplayName("Test parse method with invalid pet type")
+	void testParseWithInvalidPetType() throws Exception {
+		List<PetType> petTypes = new ArrayList<>();
+		PetType dog = new PetType();
+		dog.setName("Dog");
+		petTypes.add(dog);
+		given(ownerRepository.findPetTypes()).willReturn(petTypes);
+
+		assertThatThrownBy(() -> petTypeFormatter.parse("Dragon", Locale.ENGLISH)).isInstanceOf(ParseException.class)
+			.hasMessage("type not found: Dragon");
+		then(ownerRepository).should().findPetTypes();
+	}
+
+}