public FloatArrayAsIterable usingExactEquality() {
    return new FloatArrayAsIterable(EXACT_EQUALITY_CORRESPONDENCE, iterableSubject());
  }
@Test
  public void usingExactEquality_contains_failure() {
    expectFailureWhenTestingThat(array(1.1f, JUST_OVER_2POINT2, 3.3f))
        .usingExactEquality()
        .contains(2.2f);
    assertFailureKeys("value of", "expected to contain", "testing whether", "but was");
    assertFailureValue("expected to contain", Float.toString(2.2f));
    assertFailureValue("testing whether", "actual element is exactly equal to expected element");
    assertFailureValue("but was", "[" + 1.1f + ", " + JUST_OVER_2POINT2 + ", " + 3.3f + "]");
  }