DB.Migrator().DropTable(&Product2{})
	DB.AutoMigrate(&Product2{})

	product := Product2{Name: "Invalid", Price: 100}

	if err := DB.Create(&product).Error; err == nil {
		t.Fatalf("should returns error %v when creating product, but got nil", err)
	}

	product2 := Product2{Name: "Nice", Price: 100}

	if err := DB.Create(&product2).Error; err != nil {
		t.Fatalf("Failed to create product, got error: %v", err)
	}

  }

  /**
   * Returns a builder that creates immutable sorted sets with an explicit comparator. If the
   * comparator has a more general type than the set being generated, such as creating a {@code
   * SortedSet<Integer>} with a {@code Comparator<Number>}, use the {@link Builder} constructor
   * instead.
   *
   * @throws NullPointerException if {@code comparator} is null
   */

    private final List<DocBoostMatcher> docBoostMatcherList = new ArrayList<>();

    /** List of active crawler instances */
    private List<Crawler> crawlerList;

    /** Factory for creating document ingesters */
    private IngestFactory ingestFactory = null;

    /**
     * Default constructor for IndexUpdater.
     * Initializes a new instance with default settings.
     */

  public static <E> Builder<E> builderWithExpectedSize(int expectedSize) {
    checkNonnegative(expectedSize, "expectedSize");
    return new ImmutableList.Builder<>(expectedSize);
  }

  /**
   * A builder for creating immutable list instances, especially {@code public static final} lists
   * ("constant lists"). Example:
   *
   * {@snippet :
   * public static final ImmutableList<Color> GOOGLE_COLORS =

* Add federation api and cm servers to hyperkube ([#27586](https://github.com/kubernetes/kubernetes/pull/27586), [@colhom](https://github.com/colhom))
* federation: Creating kubeconfig files to be used for creating secrets for clusters on aws and gke ([#27332](https://github.com/kubernetes/kubernetes/pull/27332), [@nikhiljindal](https://github.com/nikhiljindal))

   */
  public static <K, V> Builder<K, V> builderWithExpectedKeys(int expectedKeys) {
    checkNonnegative(expectedKeys, "expectedKeys");
    return new Builder<>(expectedKeys);
  }

  /**
   * A builder for creating immutable {@code ListMultimap} instances, especially {@code public
   * static final} multimaps ("constant multimaps"). Example:
   *
   * {@snippet :
   * static final Multimap<String, Integer> STRING_TO_INTEGER_MULTIMAP =

        mockFessConfig = new MockFessConfig();
        mockSystemHelper = new MockSystemHelper();
        mockPopularWordHelper = new MockPopularWordHelper();

        // Register mock components before creating SuggestJob
        ComponentUtil.register(mockServletContext, "servletContext");
        ComponentUtil.register(mockServletContext, ServletContext.class.getCanonicalName());

 *       method to obtain a correctly-sized copy.
 *   <li>The performance of using the associated {@code Builder} class can be assumed to be no
 *       worse, and possibly better, than creating a mutable collection and copying it.
 *   <li>Implementations generally do not cache hash codes. If your element or key type has a slow
 *       {@code hashCode} implementation, it should cache it itself.
 * </ul>
 *

   * symmetry. Moreover, we don't want to reconstruct a native type variable {@code <A>} using our
   * implementation unless some of its bounds have changed in resolution. This avoids creating
   * unequal TypeVariable implementation unnecessarily. When the bounds do change, however, it's
   * fine for the synthetic TypeVariable to be unequal to any native TypeVariable anyway.
   */

   *     future's result type {@code C}, see {@link DeferredCloser#eventuallyClose(Object,
   *     Executor)}.
   * @param closingExecutor the future's result will be closed on this executor
   * @deprecated Creating {@link Future}s of closeable types is dangerous in general because the
   *     underlying value may never be closed if the {@link Future} is canceled after its operation