def test_display_lines(vim):
    lines = vim.display_lines()
    assert all(len(line) == 80 for line in lines)
    assert any('VIM - Vi IMproved' in line for line in lines)
    assert lines[-1].strip() == ''
dataset/ETHPy150Open manicmaniac/headlessvim/tests/test_headlessvim.py/test_display_lines/original