@Test
    public void test7bitAscii() {
        for(char c = 0; c < 128; c++) {
            char [] carray = {c};
            String s = new String(carray);
            assertEquals(Lowercase.toLowerCase(s), s.toLowerCase(Locale.ENGLISH));
            assertEquals(Lowercase.toUpperCase(s), s.toUpperCase(Locale.ENGLISH));
        }
    }
@author <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
@since 5.1.14
vespajlib/src/test/java/com/yahoo/text/LowercaseTestCase.java