Implement UnaryOps tests

Author: WillAyd

pandas/tests/extension/list/test_list.py

@@ -80,7 +80,7 @@ class TestListArray(
     BaseMissingTests,
     BaseArithmeticOpsTests,
     BaseComparisonOpsTests,
-    # BaseUnaryOpsTests,
+    BaseUnaryOpsTests,
     BasePrintingTests,
     BaseReduceTests,
     # BaseReshapingTests,
@@ -156,6 +156,9 @@ def test_compare_array(self, data, comparison_op):
 
         super().test_compare_array(data, comparison_op)
 
+    def test_invert(self, data):
+        pytest.skip("ListArray does not implement invert")
+
 
 def test_to_csv(data):
     # https://github.com/pandas-dev/pandas/issues/28840