assertThat(Arrays.equals(new float[] {1.0f, 0.0f, 0.0f}, Floats.ensureCapacity(ARRAY1, 2, 1)))
        .isTrue();
  }

  public void testEnsureCapacity_fail() {
    assertThrows(IllegalArgumentException.class, () -> Floats.ensureCapacity(ARRAY1, -1, 1));
    assertThrows(IllegalArgumentException.class, () -> Floats.ensureCapacity(ARRAY1, 1, -1));
  }