src/test/java/com/example/RoleMatrixServiceTest.java

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+package com.example;
+
+import org.junit.jupiter.api.BeforeEach;
+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 java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.*;
+
+@ExtendWith(MockitoExtension.class)
+@DisplayName("RoleMatrixService 검증 테스트")
+class RoleMatrixServiceTest {
+
+    @Mock
+    private RoleMatrixRepository repository;
+
+    @InjectMocks
+    private RoleMatrixService service;
+
+    private RoleMatrix testMatrix;
+
+    @BeforeEach
+    void setUp() {
+        testMatrix = new RoleMatrix();
+        testMatrix.setId(1L);
+        testMatrix.setName("Admin Role");
+        testMatrix.setPermissions(Arrays.asList("READ", "WRITE", "DELETE"));
+    }
+
+    @Test
+    @DisplayName("역할 매트릭스 조회 성공")
+    void getRoleMatrix_Success() {
+        // Given
+        when(repository.findById(1L)).thenReturn(testMatrix);
+
+        // When
+        RoleMatrix result = service.getRoleMatrix(1L);
+
+        // Then
+        assertNotNull(result);
+        assertEquals("Admin Role", result.getName());
+        assertEquals(3, result.getPermissions().size());
+        verify(repository, times(1)).findById(1L);
+    }
+
+    @Test
+    @DisplayName("역할 매트릭스 조회 실패 - 존재하지 않는 ID")
+    void getRoleMatrix_NotFound() {
+        // Given
+        when(repository.findById(999L)).thenReturn(null);
+
+        // When & Then
+        assertThrows(RoleNotFoundException.class, () -> service.getRoleMatrix(999L));
+        verify(repository, times(1)).findById(999L);
+    }
+
+    @Test
+    @DisplayName("모든 역할 매트릭스 조회 성공")
+    void getAllRoleMatrices_Success() {
+        // Given
+        RoleMatrix matrix2 = new RoleMatrix();
+        matrix2.setId(2L);
+        matrix2.setName("User Role");
+        matrix2.setPermissions(Arrays.asList("READ"));
+
+        when(repository.findAll()).thenReturn(Arrays.asList(testMatrix, matrix2));
+
+        // When
+        List<RoleMatrix> result = service.getAllRoleMatrices();
+
+        // Then
+        assertNotNull(result);
+        assertEquals(2, result.size());
+        verify(repository, times(1)).findAll();
+    }
+
+    @Test
+    @DisplayName("역할 매트릭스 생성 성공")
+    void createRoleMatrix_Success() {
+        // Given
+        RoleMatrix newMatrix = new RoleMatrix();
+        newMatrix.setName("New Role");
+        newMatrix.setPermissions(Arrays.asList("READ", "WRITE"));
+
+        when(repository.save(any(RoleMatrix.class))).thenReturn(newMatrix);
+
+        // When
+        RoleMatrix result = service.createRoleMatrix(newMatrix);
+
+        // Then
+        assertNotNull(result);
+        assertEquals("New Role", result.getName());
+        verify(repository, times(1)).save(any(RoleMatrix.class));
+    }
+
+    @Test
+    @DisplayName("역할 매트릭스 업데이트 성공")
+    void updateRoleMatrix_Success() {
+        // Given
+        when(repository.findById(1L)).thenReturn(testMatrix);
+        when(repository.save(any(RoleMatrix.class))).thenReturn(testMatrix);
+
+        RoleMatrix updateData = new RoleMatrix();
+        updateData.setName("Updated Admin Role");
+        updateData.setPermissions(Arrays.asList("READ", "WRITE"));
+
+        // When
+        RoleMatrix result = service.updateRoleMatrix(1L, updateData);
+
+        // Then
+        assertNotNull(result);
+        assertEquals("Updated Admin Role", result.getName());
+        verify(repository, times(1)).findById(1L);
+        verify(repository, times(1)).save(any(RoleMatrix.class));
+    }
+
+    @Test
+    @DisplayName("역할 매트릭스 삭제 성공")
+    void deleteRoleMatrix_Success() {
+        // Given
+        when(repository.existsById(1L)).thenReturn(true);
+        doNothing().when(repository).deleteById(1L);
+
+        // When
+        service.deleteRoleMatrix(1L);
+
+        // Then
+        verify(repository, times(1)).existsById(1L);
+        verify(repository, times(1)).deleteById(1L);
+    }
+
+    @Test
+    @DisplayName("역할 매트릭스 삭제 실패 - 존재하지 않는 ID")
+    void deleteRoleMatrix_NotFound() {
+        // Given
+        when(repository.existsById(999L)).thenReturn(false);
+
+        // When & Then
+        assertThrows(RoleNotFoundException.class, () -> service.deleteRoleMatrix(999L));
+        verify(repository, times(1)).existsById(999L);
+        verify(repository, never()).deleteById(any());
+    }
+
+    @Test
+    @DisplayName("권한 검증 성공")
+    void hasPermission_Success() {
+        // Given
+        when(repository.findById(1L)).thenReturn(testMatrix);
+
+        // When
+        boolean result = service.hasPermission(1L, "READ");
+
+        // Then
+        assertTrue(result);
+        verify(repository, times(1)).findById(1L);
+    }
+
+    @Test
+    @DisplayName("권한 검증 실패 - 권한 없음")
+    void hasPermission_NoPermission() {
+        // Given
+        when(repository.findById(1L)).thenReturn(testMatrix);
+
+        // When
+        boolean result = service.hasPermission(1L, "ADMIN");
+
+        // Then
+        assertFalse(result);
+        verify(repository, times(1)).findById(1L);
+    }
+
+    @Test
+    @DisplayName("역할별 권한 매트릭스 조회 성공")
+    void getPermissionsByRole_Success() {
+        // Given
+        when(repository.findById(1L)).thenReturn(testMatrix);
+
+        // When
+        Map<String, Boolean> result = service.getPermissionsByRole(1L);
+
+        // Then
+        assertNotNull(result);
+        assertEquals(3, result.size());
+        assertTrue(result.get("READ"));
+        assertTrue(result.get("WRITE"));
+        assertTrue(result.get("DELETE"));
+        verify(repository, times(1)).findById(1L);
+    }
+
+    @Test
+    @DisplayName("빈 역할 목록 조회")
+    void getAllRoleMatrices_EmptyList() {
+        // Given
+        when(repository.findAll()).thenReturn(Arrays.asList());
+
+        // When
+        List<RoleMatrix> result = service.getAllRoleMatrices();
+
+        // Then
+        assertNotNull(result);
+        assertTrue(result.isEmpty());
+        verify(repository, times(1)).findAll();
+    }
+
+    @Test
+    @DisplayName("캐시된 역할 매트릭스 조회")
+    void getRoleMatrix_Cached() {
+        // Given
+        when(repository.findById(1L)).thenReturn(testMatrix);
+
+        // When - 첫 번째 호출
+        RoleMatrix result1 = service.getRoleMatrix(1L);
+        // When - 두 번째 호출 (캐시에서)
+        RoleMatrix result2 = service.getRoleMatrix(1L);
+
+        // Then
+        assertNotNull(result1);
+        assertNotNull(result2);
+        assertEquals(result1.getName(), result2.getName());
+        // 캐시로 인해 repository는 한 번만 호출되어야 함
+        verify(repository, times(1)).findById(1L);
+    }
+}