assertEquals(0, drain(q, ImmutableList.of(), 0, 10, MILLISECONDS, interruptibly));
    }
  }

  public void testEmpty() throws Exception {
    for (BlockingQueue<Object> q : blockingQueues()) {
      testEmpty(q);
    }
  }

  private void testEmpty(BlockingQueue<Object> q) {
    assertDrained(q);
  }

  public void testNegativeMaxElements() throws Exception {

    ImmutableBiMap<String, Integer> copy = ImmutableBiMap.copyOf(original);
    assertMapEquals(copy, "one", 1, "two", 2, "three", 3);
    assertSame(copy, ImmutableBiMap.copyOf(copy));
  }

  public void testEmpty() {
    ImmutableBiMap<String, Integer> bimap = ImmutableBiMap.of();
    assertEquals(Collections.<String, Integer>emptyMap(), bimap);
    assertEquals(Collections.<Integer, String>emptyMap(), bimap.inverse());
  }

    assertEquals(CLOSED, range.upperBoundType());
    assertFalse(range.isEmpty());
    assertEquals("[4..4]", range.toString());
    reserializeAndAssert(range);
  }

  public void testEmpty1() {
    Range<Integer> range = Range.closedOpen(4, 4);
    assertFalse(range.contains(3));
    assertFalse(range.contains(4));
    assertFalse(range.contains(5));
    assertTrue(range.hasLowerBound());