Java 类javafx.beans.binding.ObjectExpression 实例源码

@Test
public void testObjectExpression(){
    ObjectExpression<TestPerson> actual = new SimpleObjectProperty<>(person);

    assertThat(actual).hasValue(person);

    assertThat(actual).hasSameValue(actual);
}

@Test
public void testObjectExpression(){
    final ObjectExpression<TestPerson> actual = Bindings.createObjectBinding(() -> person);

    assertThat(actual).hasNotNullValue();
}

@Test
public void testObjectExpression(){
    final ObjectExpression<TestPerson> actual = Bindings.createObjectBinding(() -> null);

    assertThat(actual).hasNullValue();
}