@Entity
@Table(name = "product")
public class Product {
    @Id
    @GeneratedValue(generator = "uuid")
    @GenericGenerator(name = "uuid", strategy = "uuid2")
    private String id;
    
    @NotNull @NotEmpty @Size(min = 3, max = 10)
    @Column(nullable = false, unique = true)
    private String code;
    
    @NotNull @NotEmpty @Size(min = 3, max = 255)
    @Column(nullable = false)
    private String name;
    
    @NotNull @Min(0)
    @Column(nullable = false)
    private BigDecimal price;

    //getter setter tidak ditunjukkan
}

public interface ProductDao extends PagingAndSortingRepository<Product, String>{ }

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = BelajarCiApplication.class)
@Transactional
@Sql(scripts = {"/mysql/delete-data.sql", "/mysql/sample-product.sql"})
public class ProductDaoTests {

    @Autowired private ProductDao pd;
    
    @Test
    public void testSave(){
        Product p = new Product();
        p.setCode("T-001");
        p.setName("Test Product 001");
        p.setPrice(new BigDecimal("100000.01"));
        
        Assert.assertNull(p.getId());
        pd.save(p);
        Assert.assertNotNull(p.getId());
    }
    
    @Test
    public void testFindById(){
        Product p = pd.findOne("abc123");
        Assert.assertNotNull(p);
        Assert.assertEquals("P-001", p.getCode());
        Assert.assertEquals("Product 001", p.getName());
        Assert.assertEquals(BigDecimal.valueOf(101000.01), p.getPrice());
        
        Assert.assertNull(pd.findOne("notexist"));
    }
    
}

@RestController
@RequestMapping("/api/product")
@Transactional(readOnly = true)
public class ProductController {
    @Autowired
    private ProductDao productDao;

    // nanti methodnya di sini
}

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = BelajarCiApplication.class)
@Sql(scripts = {"/mysql/delete-data.sql", "/mysql/sample-product.sql"})
@WebIntegrationTest(randomPort = true)
public class ProductControllerTests {
    private static final String BASE_URL = "/api/product";
    
    @Value("${local.server.port}")
    int serverPort;

    @Before
    public void setup() {
        RestAssured.port = serverPort;
    }

    // method test nanti diisi di sini
}

@RequestMapping(value = "/", method = RequestMethod.POST)
@Transactional(readOnly = false)
public ResponseEntity<Void> create(@RequestBody @Valid Product p, UriComponentsBuilder uriBuilder) {
    productDao.save(p);
    URI location = uriBuilder.path("/api/product/{id}")
            .buildAndExpand(p.getId()).toUri();
    HttpHeaders headers = new HttpHeaders();
    headers.setLocation(location);
    return new ResponseEntity<>(headers, HttpStatus.CREATED);
}

@Test
public void testSave() throws Exception {

    Product p = new Product();
    p.setCode("PT-001");
    p.setName("Product Test 001");
    p.setPrice(BigDecimal.valueOf(102000.02));

    given()
      .body(p)
      .contentType(ContentType.JSON)
      .when()
      .post(BASE_URL+"/")
      .then()
      .statusCode(201)
      .header("Location", containsString(BASE_URL+"/"))
      .log().headers();

    // nama tidak diisi
    Product px = new Product();
    px.setCode("PT-001");
    given()
      .body(px)
      .contentType(ContentType.JSON)
      .when()
      .post(BASE_URL+"/")
      .then()
      .statusCode(400);

    // kode kurang dari 3 huruf
    Product px1 = new Product();
    px1.setCode("PT");
    px1.setName("Product Test");
    p.setPrice(BigDecimal.valueOf(100));

    given()
      .body(px1)
      .contentType(ContentType.JSON)
      .when()
      .post(BASE_URL+"/")
      .then()
      .statusCode(400);

    // Harga negatif
    Product px2 = new Product();
    px2.setCode("PT-009");
    px2.setName("Product Test");
    p.setPrice(BigDecimal.valueOf(-100));
    given()
      .body(px1)
      .contentType(ContentType.JSON)
      .when()
      .post(BASE_URL+"/")
      .then()
      .statusCode(400);
}

@RequestMapping(value = "/", method = RequestMethod.GET)
public Page<Product> findAll(Pageable page) {
    return productDao.findAll(page);
}

@Test
public void testFindAll() {
    get(BASE_URL+"/")
      .then()
      .body("totalElements", equalTo(1))
      .body("content.id", hasItems("abc123"));
}

@RequestMapping(value = "/{id}", method = RequestMethod.GET)
public Product findById(@PathVariable("id") Product p) {
    if (p == null) {
      throw new DataNotFoundException("No data with the specified id");
    }

    return p;
}

@Test
public void testFindById() {
    get(BASE_URL+"/abc123")
      .then()
      .statusCode(200)
      .body("id", equalTo("abc123"))
      .body("code", equalTo("P-001"));

    get(BASE_URL+"/990")
      .then()
      .statusCode(404);
}

  @RequestMapping(value = "/{id}", method = RequestMethod.PUT)
  @ResponseStatus(HttpStatus.OK)
  @Transactional(readOnly = false)
  public void update(@PathVariable("id") String id, @RequestBody @Valid Product p) {
    if (!productDao.exists(id)) {
      throw new DataNotFoundException("No data with the specified id");
    }
    p.setId(id);
    productDao.save(p);
  }

  @Test
  public void testUpdate() {
    Product p = new Product();
    p.setCode("PX-009");
    p.setName("Product 909");
    p.setPrice(BigDecimal.valueOf(2000));

    given()
      .body(p)
      .contentType(ContentType.JSON)
      .when()
      .put(BASE_URL+"/abc123")
      .then()
      .statusCode(200);

    get(BASE_URL+"/abc123")
      .then()
      .statusCode(200)
      .body("id", equalTo("abc123"))
      .body("code", equalTo("PX-009"))
      .body("name", equalTo("Product 909"));
  }

  @RequestMapping(value = "/{id}", method = RequestMethod.DELETE)
  @ResponseStatus(HttpStatus.OK)
  @Transactional(readOnly = false)
  public void delete(@PathVariable("id") String id) {
    if (!productDao.exists(id)) {
    throw new DataNotFoundException("No data with the specified id");
    }
    productDao.delete(id);
  }

  @Test
  public void testDelete() {
    delete(BASE_URL+"/abc123")
      .then()
      .statusCode(200);

    get(BASE_URL+"/abc123")
      .then()
      .statusCode(404);
  }