t.Fatalf("expected err: %v got err: %v", gorm.ErrDuplicatedKey, err)
	}
}

func TestSupportedDialectorWithErrForeignKeyViolated(t *testing.T) {
	tidbSkip(t, "not support the foreign key feature")

	type City struct {
		gorm.Model
		Name string `gorm:"unique"`
	}

	type Museum struct {
		gorm.Model
		Name   string `gorm:"unique"`
		CityID uint

	defaultCertsDir   = &ConfigDir{path: getDefaultCertsDir()}
	defaultCertsCADir = &ConfigDir{path: getDefaultCertsCADir()}

	// Points to current configuration directory -- deprecated, to be removed in future.
	globalConfigDir = defaultConfigDir
	// Points to current certs directory set by user with --certs-dir
	globalCertsDir = defaultCertsDir
	// Points to relative path to certs directory and is <value-of-certs-dir>/CAs

 * or response.
 *
 * Implementations of this interface throw [IOException] to signal connectivity failures. This
 * includes both natural exceptions such as unreachable servers, as well as synthetic exceptions
 * when responses are of an unexpected type or cannot be decoded.
 *
 * Other exception types cancel the current call:
 *

      Iterable<Iterable<Integer>> iterables, Iterable<Integer> unsortedExpected) {
    Iterable<Integer> expected = Ordering.<Integer>natural().sortedCopy(unsortedExpected);

    Iterable<Integer> mergedIterator = mergeSorted(iterables, Ordering.natural());

    assertEquals(Lists.newLinkedList(expected), Lists.newLinkedList(mergedIterator));
  }

  public void testMergeSorted_stable_allEqual() {

    private final SortedSet<String> delegate = Sets.newTreeSet(Ordering.natural());

    @Override
    protected SortedSet<String> delegate() {
      return delegate;
    }
  }

  private static class NonNavigableSortedMap extends ForwardingSortedMap<String, String> {

    private final SortedMap<String, String> delegate = new SafeTreeMap<>(Ordering.natural());

    @Override

                    "Cannot read metadata from '" + mappingFile + "': " + e.getMessage(), e);
        }
    }

    /**
     * Ensures the last updated timestamp of the specified metadata does not refer to the future and fixes the local
     * metadata if necessary to allow proper merging/updating of metadata during deployment.
     */
    private void fixTimestamp(File metadataFile, Metadata metadata, Metadata reference) {

  }

  public void testOrderedPermutationSetRepeatedElements() {
    List<Integer> list = newArrayList(1, 1, 2, 2);
    Iterator<List<Integer>> permutations =
        Collections2.orderedPermutations(list, Ordering.natural()).iterator();

    assertNextPermutation(newArrayList(1, 1, 2, 2), permutations);
    assertNextPermutation(newArrayList(1, 2, 1, 2), permutations);
    assertNextPermutation(newArrayList(1, 2, 2, 1), permutations);

        // Verify
        assertNull(result, "Authentication result should be null");

        // Capture the header value to verify its contents
        ArgumentCaptor<String> headerCaptor = ArgumentCaptor.forClass(String.class);
        verify(mockResponse).setHeader(eq("WWW-Authenticate"), headerCaptor.capture());
        String headerValue = headerCaptor.getValue();

        C filtered = filter(createUnfiltered(contents), EVEN);

        try {
          Integer first = filtered.first();
          assertFalse(filtered.isEmpty());
          assertEquals(Ordering.natural().min(filtered), first);
        } catch (NoSuchElementException e) {
          assertTrue(filtered.isEmpty());
        }
      }
    }

    public void testLast() {

 * connections should expect repetition of stream IDs.
 *
 * Return true to request cancellation of a pushed stream.  Note that this does not guarantee
 * future frames won't arrive on the stream ID.
 */
interface PushObserver {
  /**
   * Describes the request that the server intends to push a response for.
   *
   * @param streamId server-initiated stream ID: an even number.