8th day of python challenges 111-117

venv/lib/python3.6/site-packages/pandas/tests/extension/base/casting.py

@@ -0,0 +1,23 @@
+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)