A sample Gradle project to run TestNG tests with different command line args

• a. Using gradle testExec custom task built on java exec plugin as a custom wrapper to TestNG cli options.

  ./gradlew clean testExec
  ./gradlew clean testExec -Pgroups=main # run tests from src/main/java folder
  ./gradlew clean testExec -Pgroups=test # run tests from src/test/java folder
  ./gradlew clean testExec -Pgroups=unit # run unit tests
  ./gradlew clean testExec -Pgroups=unit,int # run tests from multiple groups
  ./gradlew clean testExec -PdefaultListeners # run tests without custom listener setup
  ./gradlew clean testExec -Denv=test # run tests against specific test env
  ./gradlew clean testExec -Psuites=smoke.xml # run tests with specific xml
  ./gradlew clean testExec -Psuites=regression.xml,smoke.xml # run tests with multiple xml 
  ./gradlew clean testExec -Pthreads=5 # run parallel test methods with specified thread count
  ./gradlew clean testExec -Pthreads=3 -Pparallel=classes # run parallel test classes with set of threads 
  ./gradlew clean testExec -Denv=test -Pthreads=5 -Pgroups=main -Psuite=smoke.xml # run tests using multiple cli options
  
  # run a single specific test class
  ./gradlew clean testExec -Ptestclasses=com.features.demo.FeatureCTest
  
  # run multiple specific test classes
  ./gradlew clean testExec \
   -Ptestclasses=ccom.features.demo.FeatureCTest,com.features.demo.FeatureATest
  
  # run single test method
  ./gradlew clean testExec \
   -Ptestmethods=com.features.demo.FeatureCTest.testC1
  
  # run multiple test methods
  ./gradlew clean testExec \
  -Ptestmethods=com.features.demo.FeatureCTest.testC1,com.features.demo.FeatureATest.testA2
  
  # run tests from listed xml classes with only specified test groups
  ./gradlew clean testExec -Psuites=regression.xml -Pgroups=main
  
  # run tests from listed xml classes with only specified parallel tests collection with specified thread count
  ./gradlew clean testExec -Psuites=regression.xml -Pthreads=2 -Pparallel=tests   
  

• b. Using testRun custom task built on gradle test plugin as a custom wrapper to run testNG tests

  ./gradlew clean testRun --tests com.features.demo.FeatureCTest
  

• c. Using testGroups custom task built on gradle test plugin as a custom wrapper to run testNG groups based tests

  ./gradlew testGroups -Pgroups=main
  ./gradlew testGroups -Pgroups=main,unit,int