liniting and applying black

tests/test_model_definition.py

@@ -109,6 +109,22 @@ def test_setting_pk_column_as_pydantic_only_in_model_definition():
             test = fields.Integer(name='test12', primary_key=True, pydantic_only=True)
 
 
+def test_decimal_error_in_model_definition():
+    with pytest.raises(ModelDefinitionError):
+        class ExampleModel2(Model):
+            __tablename__ = "example4"
+            __metadata__ = metadata
+            test = fields.Decimal(name='test12', primary_key=True)
+
+
+def test_string_error_in_model_definition():
+    with pytest.raises(ModelDefinitionError):
+        class ExampleModel2(Model):
+            __tablename__ = "example4"
+            __metadata__ = metadata
+            test = fields.String(name='test12', primary_key=True)
+
+
 def test_json_conversion_in_model():
     with pytest.raises(pydantic.ValidationError):
         ExampleModel(test_json=datetime.datetime.now(), test=1, test_string='test', test_bool=True)