@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class QueueRemoveTester<E> extends AbstractQueueTester<E> {
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ZERO)
  public void testRemove_empty() {
    assertThrows(NoSuchElementException.class, () -> getQueue().remove());
    expectUnchanged();
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ONE)

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class QueueRemoveTester<E> extends AbstractQueueTester<E> {
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ZERO)
  public void testRemove_empty() {
    assertThrows(NoSuchElementException.class, () -> getQueue().remove());
    expectUnchanged();
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ONE)

        assertThat(rangeSet.asRanges()).containsExactly(a, b).inOrder();
      } else {
        assertThat(rangeSet.asRanges()).containsExactly(b, a).inOrder();
      }
    }
  }

  public void testRemoveEmpty() {
    TreeRangeSet<Integer> rangeSet = TreeRangeSet.create();
    rangeSet.add(Range.closed(1, 6));
    rangeSet.remove(Range.closedOpen(3, 3));
    testInvariants(rangeSet);