assertThrows(IllegalArgumentException.class, () -> Ascii.truncate("foobar", -1, "..."));

    assertThrows(IllegalArgumentException.class, () -> Ascii.truncate("foobar", -1, ""));
  }

  public void testEqualsIgnoreCase() {
    assertTrue(Ascii.equalsIgnoreCase("", ""));
    assertFalse(Ascii.equalsIgnoreCase("", "x"));
    assertFalse(Ascii.equalsIgnoreCase("x", ""));
    assertTrue(Ascii.equalsIgnoreCase(LOWER, UPPER));