@Test public void testHTML40_EXTENDED_ESCAPE(){ final Set<String> col0 = new HashSet<>(); final Set<String> col1 = new HashSet<>(); final String [][] sa = EntityArrays.HTML40_EXTENDED_ESCAPE(); for(int i =0; i <sa.length; i++){ assertTrue("Already added entry 0: "+i+" "+sa[i][0],col0.add(sa[i][0])); assertTrue("Already added entry 1: "+i+" "+sa[i][1],col1.add(sa[i][1])); } }