Update tests/test_param.py

tests/test_param.py

@@ -41,4 +41,32 @@ testdata = [
 @pytest.mark.parametrize("a,b,expected", testdata)
 def test_timedistance_v1(a, b, expected):
     diff = a - b
-    assert diff == expected
+    assert diff == expected
+
+
+scenarios = [
+    ("one", {"x": 1, "y": 2}),
+    ("two", {"x": 3, "y": 4}),
+    ("edge", {"x": -1, "y": -1}),
+]
+
+def pytest_generate_tests(metafunc):
+    if hasattr(metafunc.cls, "scenarios"):
+        ids = []
+        argnames = []
+        argvalues = []
+
+        for name, param_dict in metafunc.cls.scenarios:
+            ids.append(name)
+            if not argnames:
+                argnames = list(param_dict.keys())
+            argvalues.append([param_dict[k] for k in argnames])
+
+        metafunc.parametrize(argnames, argvalues, ids=ids)
+
+
+class TestDynamic:
+    scenarios = scenarios  
+
+    def test_sum_positive(self, x, y):
+        assert (x + y) >= 0