fix repr tests

Author: jorisvandenbossche

pandas/tests/series/test_formats.py

@@ -314,7 +314,7 @@ def test_categorical_repr(self, using_infer_string):
                 "0     a\n1     b\n"
                 "     ..\n"
                 "48    a\n49    b\n"
-                "Length: 50, dtype: category\nCategories (2, string): [a, b]"
+                "Length: 50, dtype: category\nCategories (2, str): [a, b]"
             )
         else:
             exp = (
@@ -332,7 +332,7 @@ def test_categorical_repr(self, using_infer_string):
             exp = (
                 "0    a\n1    b\n"
                 "dtype: category\n"
-                "Categories (26, string): [a < b < c < d ... w < x < y < z]"
+                "Categories (26, str): [a < b < c < d ... w < x < y < z]"
             )
         else:
             exp = (

pandas/tests/util/test_assert_frame_equal.py

@@ -134,7 +134,7 @@ def test_frame_equal_index_mismatch(check_like, frame_or_series, using_infer_str
 @pytest.mark.parametrize("check_like", [True, False])
 def test_frame_equal_columns_mismatch(check_like, frame_or_series, using_infer_string):
     if using_infer_string:
-        dtype = "string"
+        dtype = "str"
     else:
         dtype = "object"
     msg = f"""{frame_or_series.__name__}\\.columns are different

pandas/tests/util/test_assert_series_equal.py

@@ -220,9 +220,9 @@ def test_series_equal_categorical_values_mismatch(rtol, using_infer_string):
 Series values are different \\(66\\.66667 %\\)
 \\[index\\]: \\[0, 1, 2\\]
 \\[left\\]:  \\['a', 'b', 'c'\\]
-Categories \\(3, string\\): \\[a, b, c\\]
+Categories \\(3, str\\): \\[a, b, c\\]
 \\[right\\]: \\['a', 'c', 'b'\\]
-Categories \\(3, string\\): \\[a, b, c\\]"""
+Categories \\(3, str\\): \\[a, b, c\\]"""
     else:
         msg = """Series are different