fix(base): do not fail repr() on lazy objects

nejch · JohnVillalovos · commit 1efb123f63ea · 2022-06-20T10:33:49.000-07:00
diff --git a/gitlab/base.py b/gitlab/base.py
@@ -162,15 +162,15 @@ def pprint(self) -> None:
     def __repr__(self) -> str:
         name = self.__class__.__name__
 
-        if (self._id_attr and self._repr_attr) and (self._id_attr != self._repr_attr):
+        if (self._id_attr and self._repr_value) and (self._id_attr != self._repr_attr):
             return (
                 f"<{name} {self._id_attr}:{self.get_id()} "
-                f"{self._repr_attr}:{getattr(self, self._repr_attr)}>"
+                f"{self._repr_attr}:{self._repr_value}>"
             )
         if self._id_attr:
             return f"<{name} {self._id_attr}:{self.get_id()}>"
-        if self._repr_attr:
-            return f"<{name} {self._repr_attr}:{getattr(self, self._repr_attr)}>"
+        if self._repr_value:
+            return f"<{name} {self._repr_attr}:{self._repr_value}>"
 
         return f"<{name}>"
 
@@ -229,6 +229,13 @@ def get_id(self) -> Optional[Union[int, str]]:
             return None
         return getattr(self, self._id_attr)
 
+    @property
+    def _repr_value(self) -> Optional[str]:
+        """Safely returns the human-readable resource name if present."""
+        if self._repr_attr is None or not hasattr(self, self._repr_attr):
+            return None
+        return getattr(self, self._repr_attr)
+
     @property
     def encoded_id(self) -> Optional[Union[int, str]]:
         """Ensure that the ID is url-encoded so that it can be safely used in a URL
diff --git a/tests/unit/test_base.py b/tests/unit/test_base.py
@@ -251,15 +251,19 @@ def test_dunder_str(self, fake_manager):
                 "<ReprObject id:1 name:fake>",
             ),
             ("name", "name", {"name": "fake"}, "<ReprObject name:fake>"),
+            ("id", "name", {"id": 1}, "<ReprObject id:1>"),
             (None, None, {}, "<ReprObject>"),
             (None, "name", {"name": "fake"}, "<ReprObject name:fake>"),
+            (None, "name", {}, "<ReprObject>"),
         ],
         ids=[
             "GetMixin with id",
             "GetMixin with id and _repr_attr",
             "GetMixin with _repr_attr matching _id_attr",
+            "GetMixin with _repr_attr without _repr_attr value defined",
             "GetWithoutIDMixin",
             "GetWithoutIDMixin with _repr_attr",
+            "GetWithoutIDMixin with _repr_attr without _repr_attr value defined",
         ],
     )
     def test_dunder_repr(self, fake_manager, id_attr, repr_attr, attrs, expected_repr):
