def test_read():
path = "test"
if os.path.isfile(path):
os.remove(path)
expected_lines = ["a\n", "b"]
rw = FileSystemReaderWriter(path)
with open("test", "w") as f:
f.writelines(expected_lines)
read_lines = rw.read_lines()
assert expected_lines == read_lines
os.remove(path)
