add test for when str array raises type error

Author: MattePalte

pandas/tests/indexes/test_base.py

@@ -1351,6 +1351,10 @@ def test_index_round(self, decimals, expected_results):
 
         tm.assert_index_equal(result, expected)
 
+    def test_string_array_view_type_error(self):
+        arr = pd.array(["a", "b", "c"], dtype="string")
+        with pytest.raises(TypeError, match="Cannot change data-type for string array."):
+            arr.view("i8")
 
 class TestMixedIntIndex:
     # Mostly the tests from common.py for which the results differ