Constructs test suite.
TestSuite s = new TestSuite();
s.addTestSuite(LoggingEventTest.class);
s.addTestSuite(org.apache.log4j.LevelTest.class);
s.addTestSuite(org.apache.log4j.PriorityTest.class);
s.addTestSuite(org.apache.log4j.CategoryTest.class);
s.addTestSuite(org.apache.log4j.FileAppenderTest.class);
s.addTestSuite(org.apache.log4j.LogManagerTest.class);
s.addTestSuite(org.apache.log4j.helpers.LogLogTest.class);
s.addTestSuite(org.apache.log4j.LayoutTest.class);
s.addTestSuite(org.apache.log4j.helpers.DateLayoutTest.class);
s.addTestSuite(org.apache.log4j.TTCCLayoutTest.class);
s.addTestSuite(org.apache.log4j.xml.XMLLayoutTest.class);
s.addTestSuite(org.apache.log4j.HTMLLayoutTest.class);
s.addTestSuite(org.apache.log4j.PatternLayoutTest.class);
s.addTestSuite(org.apache.log4j.spi.LoggingEventTest.class);
s.addTestSuite(org.apache.log4j.spi.ThrowableInformationTest.class);
s.addTestSuite(org.apache.log4j.spi.LocationInfoTest.class);
s.addTestSuite(org.apache.log4j.PropertyConfiguratorTest.class);
s.addTestSuite(org.apache.log4j.net.SMTPAppenderTest.class);
s.addTestSuite(org.apache.log4j.net.TelnetAppenderTest.class);
return s;