update more tests

Author: jorisvandenbossche

pandas/tests/copy_view/test_astype.py

@@ -224,9 +224,7 @@ def test_convert_dtypes(using_infer_string):
     df_orig = df.copy()
     df2 = df.convert_dtypes()
 
-    if using_infer_string and HAS_PYARROW:
-        # TODO the default nullable string dtype still uses python storage
-        # this should be changed to pyarrow if installed
+    if HAS_PYARROW:
         assert not tm.shares_memory(get_array(df2, "a"), get_array(df, "a"))
     else:
         assert tm.shares_memory(get_array(df2, "a"), get_array(df, "a"))

pandas/tests/io/test_clipboard.py

@@ -350,11 +350,7 @@ def test_read_clipboard_dtype_backend(
         # GH#50502
         if dtype_backend == "pyarrow":
             pa = pytest.importorskip("pyarrow")
-            if engine == "c" and string_storage == "pyarrow":
-                # TODO avoid this exception?
-                string_dtype = pd.ArrowDtype(pa.large_string())
-            else:
-                string_dtype = pd.ArrowDtype(pa.string())
+            string_dtype = pd.ArrowDtype(pa.string())
         else:
             string_dtype = pd.StringDtype(string_storage)