When using TestParameterInjector, annotating a boolean, Boolean, or Enum parameter or field with @TestParameter automatically injects all possible values (note that it does not inject null). Explicitly specifying all values is redundant, and for enums, omitting the explicit list ensures the test will automatically run for any new values added to the enum in the future.

@Test
public void someTest(
    @TestParameter({"true", "false"}) boolean foo,
    @TestParameter({"HEARTS", "DIAMONDS", "CLUBS", "SPADES"}) Suit suit) {
  ...
}

@Test
public void someTest(@TestParameter boolean foo, @TestParameter Suit suit) {
  ...
}