Adding minor fix for unit test on Python 3.9

src/tests/test_model_gen.py

@@ -1,4 +1,5 @@
 import json
+import platform
 from enum import Enum
 from typing import List
 
@@ -9,28 +10,40 @@
 
 Object = create_model("Object")
 
+expected = [
+    ("boolean", bool),
+    ("enum", Enum),
+    ("inner-ref", Object),
+    ("integer", int),
+    ("null", type(None)),
+    ("number", float),
+    ("object", Object),
+    ("custom", Object),
+    ("string-enum", Enum),
+    ("string", str),
+    ("tuple", tuple),
+]
+if int(platform.python_version_tuple()[1]) < 9:
+    expected.append(("array", List))
+
+else:
+    from typing import _GenericAlias
+
+    def test_gen_model_list(TestData):
+        with open(TestData / f"array.json", "r") as file:
+            schema = json.load(file)
+        p = JSF(schema)
+        Model = p.pydantic()
+        assert _GenericAlias == type(Model)
+
 
 @pytest.mark.parametrize(
-    "filestem, expected_type_anno",
-    [
-        ("array", List),
-        ("boolean", bool),
-        ("enum", Enum),
-        ("inner-ref", Object),
-        ("integer", int),
-        ("null", type(None)),
-        ("number", float),
-        ("object", Object),
-        ("custom", Object),
-        ("string-enum", Enum),
-        ("string", str),
-        ("tuple", tuple),
-    ],
+    "filestem, expected_type_anno", expected,
 )
 def test_gen_model(TestData, filestem, expected_type_anno):
     with open(TestData / f"{filestem}.json", "r") as file:
         schema = json.load(file)
     p = JSF(schema)
     Model = p.pydantic()
-    print(type(Model))
+    print(type(Model), type(expected_type_anno))
     assert type(expected_type_anno) == type(Model)