@Test
public void supertype() throws ClassNotFoundException {
final Collection<Shape> filtered = ListExtensions.filtered(shapes, Shape.class);
assertThat(filtered.size(), is(3));
}
@Test
public void subtype_whenNonMatching() throws ClassNotFoundException {
final Collection<Rectangle> filtered = ListExtensions.filtered(shapes, Rectangle.class);
assertThat(filtered.size(), is(0));
}
@Test
public void empty() throws ClassNotFoundException {
final Collection<Object> filtered =
ListExtensions.filtered(Collections.emptyList(), Object.class);
assertThat(filtered.isEmpty(), is(true));
}