assertTrue(str, c == Ascii.toUpperCase(c));
      assertFalse(str, Ascii.isLowerCase(c));
      assertTrue(str, Ascii.isUpperCase(c));
    }
  }

  public void testTruncate() {
    assertEquals("foobar", Ascii.truncate("foobar", 10, "..."));
    assertEquals("fo...", Ascii.truncate("foobar", 5, "..."));
    assertEquals("foobar", Ascii.truncate("foobar", 6, "..."));