Added unit tests for achievement controller and service

src/test/java/ntnu/idatt2016/v233/SmartMat/controller/user/AchievementControllerTest.java

+package ntnu.idatt2016.v233.SmartMat.controller.user;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import ntnu.idatt2016.v233.SmartMat.entity.group.Achievement;
+import ntnu.idatt2016.v233.SmartMat.service.user.AchievementService;
+import org.junit.jupiter.api.BeforeEach;
+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.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+@ExtendWith(MockitoExtension.class)
+public class AchievementControllerTest {
+
+    @Mock
+    private AchievementService achievementService;
+
+    @InjectMocks
+    private AchievementController achievementController;
+
+    private MockMvc mockMvc;
+
+    private ObjectMapper objectMapper;
+
+    private Achievement achievement1;
+    private Achievement achievement2;
+
+    @BeforeEach
+    void setUp() {
+        mockMvc = MockMvcBuilders.standaloneSetup(achievementController).build();
+        objectMapper = new ObjectMapper();
+
+        achievement1 = Achievement.builder()
+                .achievementName("Achievement 1")
+                .achievementDescription("Achievement 1 description")
+                .build();
+
+        achievement2 = Achievement.builder()
+                .achievementName("Achievement 2")
+                .achievementDescription("Achievement 2 description")
+                .build();
+    }
+
+    @Test
+    void getAchievement() throws Exception {
+        when(achievementService.getAchievement(achievement1.getAchievementName())).thenReturn(Optional.of(achievement1));
+
+        mockMvc.perform(get("/api/achievements/achievement/{achievementName}", achievement1.getAchievementName()))
+                .andExpect(status().isOk())
+                .andExpect(content().contentType(MediaType.APPLICATION_JSON))
+                .andExpect(jsonPath("$.achievementName").value(achievement1.getAchievementName()))
+                .andExpect(jsonPath("$.achievementDescription").value(achievement1.getAchievementDescription()));
+    }
+
+    @Test
+    void getAchievement_notFound() throws Exception {
+        when(achievementService.getAchievement("Unknown")).thenReturn(Optional.empty());
+
+        mockMvc.perform(get("/api/achievements/achievement/{achievementName}", "Unknown"))
+                .andExpect(status().isNotFound());
+    }
+
+    @Test
+    void getAchievements() throws Exception {
+        List<Achievement> expectedAchievements = Arrays.asList(achievement1, achievement2);
+        when(achievementService.getAchievements()).thenReturn(expectedAchievements);
+
+        mockMvc.perform(get("/api/achievements/all"))
+                .andExpect(status().isOk())
+                .andExpect(content().contentType(MediaType.APPLICATION_JSON))
+                .andExpect(jsonPath("$.[0].achievementName").value(achievement1.getAchievementName()))
+                .andExpect(jsonPath("$.[0].achievementDescription").value(achievement1.getAchievementDescription()))
+                .andExpect(jsonPath("$.[1].achievementName").value(achievement2.getAchievementName()))
+                .andExpect(jsonPath("$.[1].achievementDescription").value(achievement2.getAchievementDescription()));
+    }
+
+    @Test
+    void getAchievements_empty() throws Exception {
+        when(achievementService.getAchievements()).thenReturn(List.of());
+
+        mockMvc.perform(get("/api/achievements/all"))
+                .andExpect(status().isNotFound());
+    }
+}

src/test/java/ntnu/idatt2016/v233/SmartMat/service/user/AchievementServiceTest.java

+package ntnu.idatt2016.v233.SmartMat.service.user;
+
+import ntnu.idatt2016.v233.SmartMat.entity.group.Achievement;
+import ntnu.idatt2016.v233.SmartMat.repository.user.AchievementRepository;
+import org.junit.jupiter.api.BeforeEach;
+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 java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.*;
+
+@ExtendWith(MockitoExtension.class)
+public class AchievementServiceTest {
+
+    @Mock
+    private AchievementRepository achievementRepository;
+
+    @InjectMocks
+    private AchievementService achievementService;
+
+    private Achievement achievement1;
+    private Achievement achievement2;
+
+    @BeforeEach
+    void setUp() {
+        achievement1 = Achievement.builder()
+                .achievementName("Achievement 1")
+                .achievementDescription("Achievement 1 description")
+                .build();
+
+        achievement2 = Achievement.builder()
+                .achievementName("Achievement 2")
+                .achievementDescription("Achievement 2 description")
+                .build();
+    }
+
+    @Test
+    void getAchievement() {
+        when(achievementRepository.findByAchievementName(achievement1.getAchievementName())).thenReturn(Optional.of(achievement1));
+
+        Optional<Achievement> result = achievementService.getAchievement(achievement1.getAchievementName());
+
+        assertThat(result).isPresent();
+        assertThat(result.get()).isEqualTo(achievement1);
+        verify(achievementRepository).findByAchievementName(achievement1.getAchievementName());
+    }
+
+    @Test
+    void getAchievement_notFound() {
+        when(achievementRepository.findByAchievementName("Unknown")).thenReturn(Optional.empty());
+
+        Optional<Achievement> result = achievementService.getAchievement("Unknown");
+
+        assertThat(result).isNotPresent();
+        verify(achievementRepository).findByAchievementName("Unknown");
+    }
+
+    @Test
+    void getAchievements() {
+        List<Achievement> expectedAchievements = Arrays.asList(achievement1, achievement2);
+        when(achievementRepository.findAll()).thenReturn(expectedAchievements);
+
+        List<Achievement> result = achievementService.getAchievements();
+
+        assertThat(result).isEqualTo(expectedAchievements);
+        verify(achievementRepository).findAll();
+    }
+}