fix column_arrays for array manager (#45001)

Author: Dr-Irv

pandas/core/internals/array_manager.py

@@ -794,7 +794,8 @@ def column_arrays(self) -> list[ArrayLike]:
         """
         Used in the JSON C code to access column arrays.
         """
-        return self.arrays
+
+        return [np.asarray(arr) for arr in self.arrays]
 
     def iset(
         self, loc: int | slice | np.ndarray, value: ArrayLike, inplace: bool = False

pandas/tests/io/json/test_json_table_schema_ext_dtype.py

@@ -131,9 +131,7 @@ def setup_method(self, method):
             }
         )
 
-    def test_build_date_series(self, using_array_manager):
-        if using_array_manager:
-            pytest.skip("Segfault for array manager GH44994")
+    def test_build_date_series(self):
 
         s = Series(self.da, name="a")
         s.index.name = "id"
@@ -159,9 +157,7 @@ def test_build_date_series(self, using_array_manager):
 
         assert result == expected
 
-    def test_build_decimal_series(self, using_array_manager):
-        if using_array_manager:
-            pytest.skip("Segfault for array manager GH44994")
+    def test_build_decimal_series(self):
 
         s = Series(self.dc, name="a")
         s.index.name = "id"
@@ -237,9 +233,7 @@ def test_build_int64_series(self):
 
         assert result == expected
 
-    def test_to_json(self, using_array_manager):
-        if using_array_manager:
-            pytest.skip("Segfault for array manager GH44994")
+    def test_to_json(self):
 
         df = self.df.copy()
         df.index.name = "idx"