don't cast None parameter

coworks/utils.py

@@ -241,7 +241,7 @@ def get_typed_value(name: str, parameter_type, val):
                 return {arg(v) for v in val}
             return {arg(val)}
         if origin is None:
-            if not parameter_type or parameter_type is Signature.empty:
+            if val is None or not parameter_type or parameter_type is Signature.empty:
                 return val
             if isinstance(val, list):
                 msg = f"Multiple values for '{name}' query parameters are not allowed"

tests/coworks/tech/test_type.py

@@ -17,6 +17,10 @@ def get(self, i: int):
     def get_(self, i: int = 0):
         return ("ok", 200) if type(i) is int else ("not ok", 400)
 
+    @entry
+    def post_str(self, s: str = None):
+        return s
+
     @entry
     def get_bool(self, i: bool):
         if type(i) is bool:
@@ -63,6 +67,20 @@ def test_base_type(self):
             response = c.post('/', json={'i': 'abc'})
             assert response.status_code == 422
 
+    def test_str(self):
+        app = TypedMS()
+
+        with app.test_client() as c:
+            response = c.post('/str')
+            assert response.status_code == 204
+
+            response = c.post('/str', json={'s': None})
+            assert response.status_code == 204
+
+            response = c.post('/str', json={'s': ''})
+            assert response.status_code == 200
+            assert response.get_data(as_text=True) == ""
+
     def test_bool(self):
         app = TypedMS()
 
@@ -99,7 +117,6 @@ def test_bool(self):
             assert response.status_code == 200
             assert response.get_data(as_text=True) == "false"
 
-
     def test_union_type(self):
         app = TypedMS()
 

tests/cws/test_environment.py

@@ -77,8 +77,6 @@ def test_run_prod_stage(self, example_dir, unused_tcp_port):
         assert response.text == "Value of environment variable test is : test prod environment variable."
         server.terminate()
 
-    import pytest
-    @pytest.mark.wip
     def test_load_env(self):
         variables = load_dotenv("dev")
         assert True