assertThat(ImmutableDoubleArray.of().lastIndexOf(21)).isEqualTo(-1);
    assertThat(iia.subArray(1, 5).lastIndexOf(1)).isEqualTo(0);
  }

  public void testContains() {
    ImmutableDoubleArray iia = ImmutableDoubleArray.of(1, 1, 2, 3, 5, 8);
    assertThat(iia.contains(1)).isTrue();
    assertThat(iia.contains(8)).isTrue();
    assertThat(iia.contains(4)).isFalse();

        assertWithMessage("%s, %s", x, y)
            .that(Doubles.compare(x, y))
            .isEqualTo(Double.compare(x, y));
      }
    }
  }

  public void testContains() {
    assertThat(Doubles.contains(EMPTY, 1.0)).isFalse();
    assertThat(Doubles.contains(ARRAY1, 2.0)).isFalse();
    assertThat(Doubles.contains(ARRAY234, 1.0)).isFalse();

        // note: spec requires only that the sign is the same
        assertWithMessage("%s, %s", x, y).that(Ints.compare(x, y)).isEqualTo(Integer.compare(x, y));
      }
    }
  }

  public void testContains() {
    assertThat(Ints.contains(EMPTY, (int) 1)).isFalse();
    assertThat(Ints.contains(ARRAY1, (int) 2)).isFalse();
    assertThat(Ints.contains(ARRAY234, (int) 1)).isFalse();

    assertEquals(
        Integer.MAX_VALUE,
        ContiguousSet.create(Range.<Integer>all(), integers()).last().intValue());
  }

  public void testContains() {
    ImmutableSortedSet<Integer> set = ContiguousSet.create(Range.closed(1, 3), integers());
    assertFalse(set.contains(0));
    assertTrue(set.contains(1));
    assertTrue(set.contains(2));

    assertThat(ImmutableLongArray.of().lastIndexOf(21)).isEqualTo(-1);
    assertThat(iia.subArray(1, 5).lastIndexOf(1)).isEqualTo(0);
  }

  public void testContains() {
    ImmutableLongArray iia = ImmutableLongArray.of(1, 1, 2, 3, 5, 8);
    assertThat(iia.contains(1)).isTrue();
    assertThat(iia.contains(8)).isTrue();
    assertThat(iia.contains(4)).isFalse();

        assertWithMessage("%s, %s", x, y)
            .that(Booleans.compare(x, y))
            .isEqualTo(Boolean.valueOf(x).compareTo(y));
      }
    }
  }

  public void testContains() {
    assertThat(Booleans.contains(EMPTY, false)).isFalse();
    assertThat(Booleans.contains(ARRAY_FALSE, true)).isFalse();
    assertThat(Booleans.contains(ARRAY_FALSE, false)).isTrue();

          assertWithMessage("%s, %s (expected: %s, actual%s)", x, y, expected, actual)
              .that(actual > 0)
              .isTrue();
        }
      }
    }
  }

  public void testContains() {
    assertThat(Shorts.contains(EMPTY, (short) 1)).isFalse();
    assertThat(Shorts.contains(ARRAY1, (short) 2)).isFalse();
    assertThat(Shorts.contains(ARRAY234, (short) 1)).isFalse();

    mmHeap.removeAll(Lists.newArrayList(2, 3));
    assertEquals(3, mmHeap.size());
    assertTrue("Heap is not intact after removeAll()", mmHeap.isIntact());
  }

  public void testContains() {
    MinMaxPriorityQueue<Integer> mmHeap = MinMaxPriorityQueue.create();
    mmHeap.addAll(Lists.newArrayList(1, 1, 2));
    assertEquals(3, mmHeap.size());