Add check againts dtype of string in Categorical (#63045)

Author: thanhlecongg

pandas/core/arrays/categorical.py

@@ -2280,7 +2280,7 @@ def _repr_categories(self) -> list[str]:
         from pandas.io.formats import format as fmt
 
         formatter = None
-        if self.categories.dtype == "str":
+        if self.categories.dtype == "str" or self.categories.dtype == "string":
             # the extension array formatter defaults to boxed=True in format_array
             # override here to boxed=False to be consistent with QUOTE_NONNUMERIC
             formatter = cast(ExtensionArray, self.categories._values)._formatter(

pandas/tests/arrays/categorical/test_repr.py

@@ -545,3 +545,10 @@ def test_categorical_str_repr(self):
         result = repr(Categorical([1, "2", 3, 4]))
         expected = "[1, '2', 3, 4]\nCategories (4, object): [1, 3, 4, '2']"
         assert result == expected
+        
+    def test_categorical_with_pandas_series(self):
+        # GH 63045
+        s = Series(["apple", "banana", "cherry", "cherry"], dtype="string")
+        result =repr(Categorical(s))
+        expected = "['apple', 'banana', 'cherry', 'cherry']\nCategories (3, string): ['apple', 'banana', 'cherry']"
+        assert result == expected