Merge branch 'feature/usergroupassocontroller-tests' into 'main'

Added tests for UserGroupAssoController

Closes #159

See merge request idatt2106-v23-03/backend!119

src/test/java/ntnu/idatt2016/v233/SmartMat/controller/group/UserGroupAssoControllerTest.java

+package ntnu.idatt2016.v233.SmartMat.controller.group;
+
+import ntnu.idatt2016.v233.SmartMat.entity.group.UserGroupAsso;
+import ntnu.idatt2016.v233.SmartMat.service.group.UserGroupAssoService;
+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.HttpStatus;
+import org.springframework.http.ResponseEntity;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.Mockito.when;
+
+@ExtendWith(MockitoExtension.class)
+public class UserGroupAssoControllerTest {
+
+    @InjectMocks
+    private UserGroupAssoController userGroupAssoController;
+
+    @Mock
+    private UserGroupAssoService userGroupAssoService;
+
+    private List<UserGroupAsso> userGroupAssoList;
+
+    @BeforeEach
+    public void setUp() {
+        UserGroupAsso userGroupAsso1 = new UserGroupAsso();
+        UserGroupAsso userGroupAsso2 = new UserGroupAsso();
+        // Set properties for userGroupAsso1 and userGroupAsso2
+        userGroupAssoList = Arrays.asList(userGroupAsso1, userGroupAsso2);
+    }
+
+    @Test
+    public void getInformationByGroupId_found() {
+        long groupId = 1L;
+        when(userGroupAssoService.getInformationByGroupId(groupId)).thenReturn(Optional.of(userGroupAssoList));
+
+        ResponseEntity<List<UserGroupAsso>> response = userGroupAssoController.getInformationByGroupId(groupId);
+
+        assertEquals(HttpStatus.OK, response.getStatusCode());
+        assertEquals(userGroupAssoList, response.getBody());
+    }
+
+    @Test
+    public void getInformationByGroupId_notFound() {
+        long groupId = 1L;
+        when(userGroupAssoService.getInformationByGroupId(groupId)).thenReturn(Optional.empty());
+
+        ResponseEntity<List<UserGroupAsso>> response = userGroupAssoController.getInformationByGroupId(groupId);
+
+        assertEquals(HttpStatus.NOT_FOUND, response.getStatusCode());
+    }
+}