TestSuite suite = new TestSuite();
suite.addTestSuite(TestNonNegativeInteger.class);
suite.addTestSuite(TestPositiveInteger.class);
suite.addTestSuite(TestNonPositiveInteger.class);
suite.addTestSuite(TestNegativeInteger.class);
suite.addTestSuite(TestNormalizedString.class);
suite.addTestSuite(TestToken.class);
suite.addTestSuite(TestUnsignedLong.class);
suite.addTestSuite(TestUnsignedInt.class);
suite.addTestSuite(TestUnsignedShort.class);
suite.addTestSuite(TestUnsignedByte.class);
suite.addTestSuite(TestYearMonth.class);
suite.addTestSuite(TestYear.class);
suite.addTestSuite(TestMonth.class);
suite.addTestSuite(TestMonthDay.class);
suite.addTestSuite(TestDay.class);
suite.addTestSuite(TestName.class);
suite.addTestSuite(TestId.class);
suite.addTestSuite(TestNCName.class);
suite.addTestSuite(TestNMToken.class);
suite.addTestSuite(TestDuration.class);
suite.addTestSuite(TestURI.class);
return suite;