@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class CollectionRemoveAllTester<E> extends AbstractCollectionTester<E> {
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRemoveAll_emptyCollection() {
    assertFalse(
        "removeAll(emptyCollection) should return false",
        collection.removeAll(MinimalCollection.of()));
    expectUnchanged();
  }

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class CollectionRemoveAllTester<E> extends AbstractCollectionTester<E> {
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRemoveAll_emptyCollection() {
    assertFalse(
        "removeAll(emptyCollection) should return false",
        collection.removeAll(MinimalCollection.of()));
    expectUnchanged();
  }