import static com.google.common.collect.testing.features.CollectionFeature.REJECTS_DUPLICATES_AT_CREATION;
import static com.google.common.collect.testing.features.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;
import static com.google.common.collect.testing.testers.ReflectionFreeAssertThrows.assertThrows;
import static java.util.Arrays.asList;

    Iterator<Subscriber> one = registry.getSubscribers("");
    assertEquals(s1, one.next().target);
    assertFalse(one.hasNext());

    one = registry.getSubscribers("");

    registry.register(s2);
    registry.register(o1);

    Iterator<Subscriber> three = registry.getSubscribers("");
    assertEquals(s1, one.next().target);
    assertFalse(one.hasNext());

    worked everywhere that I know of except for one place: when running the GWT
    util.concurrent tests under Guava.

    The problem is that GWT responds poorly to two .gwt.xml files in the same
    Java package; see
    https://groups.google.com/g/google-web-toolkit-contributors/c/CqYH59Dt_rQ/m/uVGW1QdUsXUJ
    for details.

    The summary is that it ignores one file in favor of the other.

  }

  public void testForMapWithoutDefault() {
    Map<String, @Nullable Integer> map = new HashMap<>();
    map.put("One", 1);
    map.put("Three", 3);
    map.put("Null", null);
    Function<String, @Nullable Integer> function = Functions.forMap(map);

    assertEquals(1, function.apply("One").intValue());
    assertEquals(3, function.apply("Three").intValue());
    assertNull(function.apply("Null"));

  }

  public void testForMapWithoutDefault() {
    Map<String, @Nullable Integer> map = new HashMap<>();
    map.put("One", 1);
    map.put("Three", 3);
    map.put("Null", null);
    Function<String, @Nullable Integer> function = Functions.forMap(map);

    assertEquals(1, function.apply("One").intValue());
    assertEquals(3, function.apply("Three").intValue());
    assertNull(function.apply("Null"));

    assertMultimapEquals(ImmutableSetMultimap.of("one", 1), "one", 1);
    assertMultimapEquals(ImmutableSetMultimap.of("one", 1, "two", 2), "one", 1, "two", 2);
    assertMultimapEquals(
        ImmutableSetMultimap.of("one", 1, "two", 2, "three", 3), "one", 1, "two", 2, "three", 3);
    assertMultimapEquals(
        ImmutableSetMultimap.of("one", 1, "two", 2, "three", 3, "four", 4),
        "one",
        1,
        "two",
        2,

}

func TestPolymorphicHasOneAssociationForSlice(t *testing.T) {
	pets := []Pet{
		{Name: "hasone-1", Toy: Toy{Name: "toy-has-one"}},
		{Name: "hasone-2", Toy: Toy{}},
		{Name: "hasone-3", Toy: Toy{Name: "toy-has-one"}},
	}

	DB.Create(&pets)

	// Count
	AssertAssociationCount(t, pets, "Toy", 2, "")

	// Find
	var toys []Toy

	if hamsterToy.Name != hamster.PreferredToy.Name {
		t.Errorf("Should find has one polymorphic association")
	}

	hamsterToy = Toy{}
	DB.Model(&hamster).Association("OtherToy").Find(&hamsterToy)
	if hamsterToy.Name != hamster.OtherToy.Name {
		t.Errorf("Should find has one polymorphic association")
	}

	// Append
	DB.Model(&hamster).Association("PreferredToy").Append(&Toy{
		Name: "bike 2",

 * system. Custom scope annotations should be annotated with {@code @Scope}.
 * <p>
 * Built-in scopes include:
 * <ul>
 *   <li>{@link Singleton} - One instance per container</li>
 *   <li>{@link SessionScoped} - One instance per Maven session</li>
 *   <li>{@link MojoExecutionScoped} - One instance per plugin execution</li>
 * </ul>
 *
 * @see Singleton
 * @see SessionScoped
 * @see MojoExecutionScoped
 * @since 4.0.0
 */

    worked everywhere that I know of except for one place: when running the GWT
    util.concurrent tests under Guava.

    The problem is that GWT responds poorly to two .gwt.xml files in the same
    Java package; see
    https://groups.google.com/g/google-web-toolkit-contributors/c/CqYH59Dt_rQ/m/uVGW1QdUsXUJ
    for details.

    The summary is that it ignores one file in favor of the other.