show pytest parameterize

tests/test_zero_data_parallel/test_init_context.py

@@ -33,11 +33,11 @@ def run_dist(rank, world_size, port):
 
 
 @pytest.mark.dist
-def test_zero_init_context():
-    world_size = 2
+@pytest.mark.parametrize("world_size", [1, 2, 4])
+def test_zero_init_context(world_size):
     run_func = partial(run_dist, world_size=world_size, port=free_port())
     mp.spawn(run_func, nprocs=world_size)
 
 
 if __name__ == '__main__':
-    test_zero_init_context()
+    test_zero_init_context(2)