assertThat(Booleans.contains(ARRAY_FALSE, false)).isTrue();
    assertThat(Booleans.contains(ARRAY_FALSE_TRUE, false)).isTrue();
    assertThat(Booleans.contains(ARRAY_FALSE_TRUE, true)).isTrue();
  }

  public void testIndexOf() {
    assertThat(Booleans.indexOf(EMPTY, ARRAY_FALSE)).isEqualTo(-1);
    assertThat(Booleans.indexOf(ARRAY_FALSE, ARRAY_FALSE_TRUE)).isEqualTo(-1);
    assertThat(Booleans.indexOf(ARRAY_FALSE_FALSE, ARRAY_FALSE)).isEqualTo(0);

      assertWithMessage("" + value).that(Floats.contains(new float[] {5f, value}, value)).isTrue();
    }
    assertThat(Floats.contains(new float[] {5f, NaN}, NaN)).isFalse();
  }

  public void testIndexOf() {
    assertThat(Floats.indexOf(EMPTY, (float) 1)).isEqualTo(-1);
    assertThat(Floats.indexOf(ARRAY1, (float) 2)).isEqualTo(-1);
    assertThat(Floats.indexOf(ARRAY234, (float) 1)).isEqualTo(-1);

    assertThat(Ints.contains(ARRAY234, (int) 2)).isTrue();
    assertThat(Ints.contains(ARRAY234, (int) 3)).isTrue();
    assertThat(Ints.contains(ARRAY234, (int) 4)).isTrue();
  }

  public void testIndexOf() {
    assertThat(Ints.indexOf(EMPTY, (int) 1)).isEqualTo(-1);
    assertThat(Ints.indexOf(ARRAY1, (int) 2)).isEqualTo(-1);
    assertThat(Ints.indexOf(ARRAY234, (int) 1)).isEqualTo(-1);

          .that(Doubles.contains(new double[] {5.0, value}, value))
          .isTrue();
    }
    assertThat(Doubles.contains(new double[] {5.0, NaN}, NaN)).isFalse();
  }

  public void testIndexOf() {
    assertThat(Doubles.indexOf(EMPTY, (double) 1)).isEqualTo(-1);
    assertThat(Doubles.indexOf(ARRAY1, (double) 2)).isEqualTo(-1);
    assertThat(Doubles.indexOf(ARRAY234, (double) 1)).isEqualTo(-1);

      assertWithMessage("" + value).that(Floats.contains(new float[] {5f, value}, value)).isTrue();
    }
    assertThat(Floats.contains(new float[] {5f, NaN}, NaN)).isFalse();
  }

  public void testIndexOf() {
    assertThat(Floats.indexOf(EMPTY, (float) 1)).isEqualTo(-1);
    assertThat(Floats.indexOf(ARRAY1, (float) 2)).isEqualTo(-1);
    assertThat(Floats.indexOf(ARRAY234, (float) 1)).isEqualTo(-1);

    assertThat(Longs.contains(ARRAY234, (long) 2)).isTrue();
    assertThat(Longs.contains(ARRAY234, (long) 3)).isTrue();
    assertThat(Longs.contains(ARRAY234, (long) 4)).isTrue();
  }

  public void testIndexOf() {
    assertThat(Longs.indexOf(EMPTY, (long) 1)).isEqualTo(-1);
    assertThat(Longs.indexOf(ARRAY1, (long) 2)).isEqualTo(-1);
    assertThat(Longs.indexOf(ARRAY234, (long) 1)).isEqualTo(-1);