PYTHON-4834 Add __repr__ to IndexModel

- Fix __repr__ and test
- use assertRepr function from test_connection_monitoring

Author: aclark4life

pymongo/operations.py

@@ -774,7 +774,12 @@ def document(self) -> dict[str, Any]:
         return self.__document
 
     def __repr__(self) -> str:
-        return f"{self.__class__.__name__}({self.document})"
+        return "%s(%s%s%s)" % (
+            self.__class__.__name__,
+            "" if not self.document.get("name") else "name='%s'" % self.document["name"],
+            "" if not self.document.get("key") else ", keys=%s" % self.document["key"],
+            "" if not self.document.get("unique") else ", unique='%s'" % self.document["unique"],
+        )
 
 
 class SearchIndexModel:

test/test_collection.py

@@ -2253,10 +2253,16 @@ def afind(*args, **kwargs):
         for helper, args in helpers:
             helper(*args, let={})  # type: ignore
 
-    def test_repr(self):
-        im = IndexModel("hello")
-        self.assertEqual(im.__repr__(), f"{im.__class__.__name__}({im.document})")
-
+    def assertRepr(self, obj):
+        new_obj = eval(repr(obj))
+        self.assertEqual(type(new_obj), type(obj))
+        self.assertEqual(repr(new_obj), repr(obj))
+
+    def test_index_model_repr(self):
+        self.assertRepr(IndexModel("hello", unique=False))
+        self.assertRepr(IndexModel("world", unique=True))
+        self.assertRepr(IndexModel([("hello", DESCENDING)], unique=True))
+        self.assertRepr(IndexModel([("world", DESCENDING)], name="world", unique=True))
 
 if __name__ == "__main__":
     unittest.main()