| test method | individual test method within a class |
| test | 1..N test methods in 1 or more classes. |
| suite | 1..N tests. |
| 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.
