update per comments

pandas/_testing.py

@@ -982,7 +982,6 @@ def assert_interval_array_equal(left, right, exact="equiv", obj="IntervalArray")
         # We have a DatetimeArray or TimedeltaArray
         kwargs["check_freq"] = False
 
-    # TODO: `exact` keyword?
     assert_equal(left._left, right._left, obj=f"{obj}.left", **kwargs)
     assert_equal(left._right, right._right, obj=f"{obj}.left", **kwargs)
 

pandas/core/arrays/interval.py

@@ -564,7 +564,7 @@ def __setitem__(self, key, value):
         key = check_array_indexer(self, key)
 
         self._left[key] = value_left
-        self._right[key] = value_right  # TODO: needs tests for not breaking views
+        self._right[key] = value_right
 
     def __eq__(self, other):
         # ensure pandas array for list-like and eliminate non-interval scalars

pandas/core/indexes/interval.py

@@ -865,11 +865,11 @@ def _convert_list_indexer(self, keyarr):
 
     @cache_readonly
     def left(self) -> Index:
-        return Index(self._values.left, copy=False)
+        return Index(self._data.left, copy=False)
 
     @cache_readonly
     def right(self) -> Index:
-        return Index(self._values.right, copy=False)
+        return Index(self._data.right, copy=False)
 
     @cache_readonly
     def mid(self):