|test method||individual test method within a class|
|test||1..N test methods in 1 or more classes.|
|group||A named subset of test methods within a test.|
How each definition is applied depends on the provider, and the test suite being used.
Directory test suite: this constructs a single suite from a directory file set. Each discovered class is treated as a test.
TestNG XML test suite: this constructs a single suite from a testng.xml file. The definitions inside the file will match those above.
JUnit 3.x: Groups are not supported.
See Surefire Providers for more information on specific providers.