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- import pandas as pd
- from pandas.core.internals import ObjectBlock
- from .base import BaseExtensionTests
- class BaseCastingTests(BaseExtensionTests):
- """Casting to and from ExtensionDtypes"""
- def test_astype_object_series(self, all_data):
- ser = pd.Series({"A": all_data})
- result = ser.astype(object)
- assert isinstance(result._data.blocks[0], ObjectBlock)
- def test_tolist(self, data):
- result = pd.Series(data).tolist()
- expected = list(data)
- assert result == expected
- def test_astype_str(self, data):
- result = pd.Series(data[:5]).astype(str)
- expected = pd.Series(data[:5].astype(str))
- self.assert_series_equal(result, expected)
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