import java.util.Iterator; import java.util.stream.Stream; import org.junit.jupiter.params.ParameterizedTest; import org.junit.jupiter.params.provider.Arguments; import org.junit.jupiter.params.provider.MethodSource; class MethodSourceProblem { @ParameterizedTest @MethodSource(names = {"stream", "iterator"}) void test(int x, int y) { System.out.println(x + ", "+ y); } static Stream<Arguments> stream() { return null; } static Iterator<Arguments> iterator() { return null; } }