Migrate unit test to feature test

Author: Barry Barrette

end_to_end_tests/functional_tests/generated_code_execution/test_enums_and_consts.py

@@ -129,6 +129,35 @@ def test_invalid_values(self, MyModel):
             MyModel.from_dict({"enumProp": "a"})
 
 
+@with_generated_client_fixture(
+"""
+components:
+  schemas:
+    MyEnum:
+      type: integer
+      enum: [2, 3, -4]
+      x-enum-varnames: [
+        "Two",
+        "Three",
+        "Negative Four"
+      ]
+""")
+@with_generated_code_imports(
+    ".models.MyEnum",
+)
+class TestIntEnumVarNameExtensions:
+    @pytest.mark.parametrize(
+        "expected_name,expected_value",
+        [
+            ("TWO", 2),
+            ("THREE", 3),
+            ("NEGATIVE_FOUR", -4),
+        ],
+    )
+    def test_enum_values(self, MyEnum, expected_name, expected_value):
+        assert getattr(MyEnum, expected_name) == MyEnum(expected_value)
+
+
 @with_generated_client_fixture(
 """
 components: