Method test_write_simple_dict

Lib/test/test_csv.py:846–855

(self)

            self.assertEqual(writeheader_return_value, 10)

    def test_write_simple_dict(self):
        with TemporaryFile("w+", encoding="utf-8", newline='') as fileobj:
            writer = csv.DictWriter(fileobj, fieldnames = ["f1", "f2", "f3"])
            writer.writeheader()
            fileobj.seek(0)
            self.assertEqual(fileobj.readline(), "f1,f2,f3\r\n")
            writer.writerow({"f1": 10, "f3": "abc"})
            fileobj.seek(0)
            fileobj.readline() # header
            self.assertEqual(fileobj.read(), "10,,abc\r\n")

    def test_write_multiple_dict_rows(self):
        fileobj = StringIO()