@WebMvcTest(CategoryController.class)
public class CategoryControllerTest {

    @MockBean
    CategoryService categoryService;

    ObjectMapper mapper = new ObjectMapper();

    @Autowired
    private MockMvc mockMvc;

    Category category;
    CategoryDto categoryDto;

    @BeforeEach
    public void init() {
        categoryDto = new CategoryDto();
        categoryDto.setId(15L);
        categoryDto.setName("name");
        categoryDto.setParentId(2L);

        category = new Category();
        category.setId(categoryDto.getId());
        category.setName(categoryDto.getName());
        category.setParentId(categoryDto.getParentId());
    }

    @Test
    public void is_should_return_created_category() throws Exception {
        when(categoryService.createCategory(any(CategoryDto.class))).thenReturn(categoryDto);

        mockMvc.perform(post("/api/categories/create")
                .content(mapper.writeValueAsString(categoryDto))
                .contentType(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.id").value(categoryDto.getId()))
                .andExpect(jsonPath("$.name").value(categoryDto.getName()))
                .andExpect(jsonPath("$.parentId").value(categoryDto.getParentId()));

    }
}


@Override
    @Transactional
    public CategoryDto createCategory(CategoryDto categoryDto) {
        Category category = categoryMapper.toEntity(categoryDto);
        categoryRepository.save(category);
        categoryDto.setId(category.getId());
        return categoryDto;
    }


@Data
@JsonInclude(JsonInclude.Include.NON_NULL)
public class CategoryDto {
    private Long id;
    @NotEmpty
    private String name;
    private Long parentId;
}

@Entity
@Table(name = "categories")
@Getter
@Setter
public class Category extends BaseEntity {

    @Column(name = "name")
    private String name;

    @Column(name = "parent_id")
    private Long parentId;

}

  @PostMapping("/create")
    public ResponseEntity<CategoryDto> createCategory(@RequestBody @Valid CategoryDto categoryDto) {
        return ResponseEntity.ok(categoryService.createCategory(categoryDto));
    }