def test_delete_first_line(self):
        text = "1\n22\n3\n44\n5\n66\n"
        self.fillAndClear(text)
        self.buffer.delete(Range(1, 1))
        assert self.buffer.lines == ['22\n', '3\n', '44\n', '5\n', '66\n']
        assert self.deleted("afterPosition") == Position(1,1)
        assert self.deleted("startPosition") == Position(2,1)
        assert self.signals in "updatedBuffer"
dataset/ETHPy150Open elmar-hinz/Python.Vii/tests/Buffer_Test.py/Buffer_Test.test_delete_first_line/swapped operands of `in`