Test IntersectionSet attribute repr

Author: shermanjasonaf

pyomo/contrib/pyros/tests/test_uncertainty_sets.py

@@ -1448,6 +1448,8 @@ class behaves like a regular Python list.
         # assigning to slices should work fine
         all_sets[3:] = [BoxSet([[1, 1.5]]), BoxSet([[1, 3]])]
 
+        self.assertRegex(repr(all_sets), r"UncertaintySetList\(\[.*\]\)")
+
     def test_set_as_constraint(self):
         """
         Test method for setting up constraints works correctly.