Configure tests for TestNG

1. Main Runnerclass should look as below ::

** Run lists of tests from package **    
      public class Runner {

        @Test
        public void testApp() throws Exception {
            ATDRunner atdRunner = new ATDRunner();
            //atdRunner.runner(package_name_where_test_located);
            atdRunner.runner("com.paralle.tests");
        }
    }

** Run lists of tests ** 
     @Test
        public void testApp() throws Exception {
          ATDRunner parallelThread = new ATDRunner();
          List<String> tests = new ArrayList<>();
          tests.add("HomePageTest2");
          tests.add("HomePageTest3");
          parallelThread.runner("com.test.site",tests);
        }

** Run lists of tests from mulitple packages **
     @Test
        public void testApp() throws Exception {
          ATDRunner parallelThread = new ATDRunner();
          List<String> tests = new ArrayList<>();
          tests.add("HomePageTest2");
          tests.add("HomePageTest3");
          parallelThread.runner("com.test.site,com.ios.test",tests);
        }

** Run test against certain devices connected **
command to start runner
UDIDS=udid1,udid2,udid3 mvn clean -Dtest=RunnerCukes test

public class RunnerCukes {
    @Test 
    public void testCukesRunner() throws Exception {
        String udidParam = System.getProperty("udid");
        String[] parts = udidParam.split(",");
    	List<String> deviceList = Arrays.asList(parts);
    	ParallelThread cucumberParallelThread = new ParallelThread(deviceList);
        boolean hasFailures = cucumberParallelThread.runner("output");
        Assert.assertFalse(hasFailures, "Testcases have failed in parallel execution");
    }
}

2. Create config.properties file under your test directory, which should have below properties.

   RUNNER=distribute
   FRAMEWORK=testng/cucumber
   LISTENERS=listerner2,listerner2 (user can add custom listeners here, comma separated)
   MAX_RETRY_COUNT=2 (Provide any retry count on failures, this is applied to all tests globally)
   
   
   ## Default path to capability json is root/caps/capabilities.json if the location of the capabilities.json is changed make sure you mention as below 
   CAPS=relative/absolute
   SUITE_NAME=testApp
   CATEGORY=sanity 
   

3. If you want to specify android/iOS capabilities (https://github.com/saikrishna321/PageObjectPatternAppium/tree/master/caps)

Run Test from CommandLine

Platform="android/ios/both" mvn clean -Dtest=Runner test