How to use the aiofile.utils.Writer function in aiofile

async def test_line_reader(aio_file_maker, temp_file, uuid):
    afp = await aio_file_maker(temp_file, 'w+')

    writer = Writer(afp)

    lines = [uuid4().hex for _ in range(1000)]

    for line in lines:
        await writer(line)
        await writer('\n')

    read_lines = []

    async for line in LineReader(afp):
        read_lines.append(line[:-1])

    assert lines == read_lines

def test_reader_writer(temp_file, uuid):
    r_file = thread_aio_file(temp_file, 'r')
    w_file = thread_aio_file(temp_file, 'w')

    writer = Writer(w_file)

    for _ in range(100):
        yield from writer(uuid)

    yield from w_file.fsync()

    count = 0
    for async_chunk in Reader(r_file, chunk_size=len(uuid)):
        chunk = yield from async_chunk

        if not chunk:
            break

        assert chunk.decode() == uuid
        count += 1

async def test_reader_writer(loop, temp_file, uuid):
    r_file = thread_aio_file(temp_file, 'r')
    w_file = thread_aio_file(temp_file, 'w')

    writer = Writer(w_file)

    for _ in range(100):
        await writer(uuid)

    await w_file.fsync()

    async for chunk in Reader(r_file, chunk_size=len(uuid)):
        assert chunk.decode() == uuid

async def test_reader_writer(aio_file_maker, temp_file, uuid):
    r_file = await aio_file_maker(temp_file, 'r')
    w_file = await aio_file_maker(temp_file, 'w')

    writer = Writer(w_file)

    for _ in range(100):
        await writer(uuid)

    await w_file.fsync()

    async for chunk in Reader(r_file, chunk_size=len(uuid)):
        assert chunk == uuid

async def test_reader_writer(aio_file_maker, temp_file, uuid):
    r_file = await aio_file_maker(temp_file, 'r')
    w_file = await aio_file_maker(temp_file, 'w')

    writer = Writer(w_file)

    for _ in range(100):
        await writer(uuid)

    await w_file.fsync()

    count = 0
    for async_chunk in Reader(r_file, chunk_size=len(uuid)):
        chunk = await async_chunk
        assert chunk == uuid
        count += 1

    assert count == 100

async def test_reader_writer(temp_file, uuid):
    r_file = thread_aio_file(temp_file, 'r')
    w_file = thread_aio_file(temp_file, 'w')

    writer = Writer(w_file)

    for _ in range(100):
        await writer(uuid)

    await w_file.fsync()

    count = 0
    for async_chunk in Reader(r_file, chunk_size=len(uuid)):
        chunk = await async_chunk
        assert chunk.decode() == uuid
        count += 1

    assert count == 100

async def test_line_reader_one_line(aio_file_maker, temp_file):
    afp = await aio_file_maker(temp_file, 'w+')

    writer = Writer(afp)

    payload = " ".join(uuid4().hex for _ in range(1000))

    await writer(payload)

    read_lines = []

    async for line in LineReader(afp):
        read_lines.append(line)

    assert payload == read_lines[0]

async def test_reader_writer2(aio_file_maker, temp_file, uuid):
    r_file = await aio_file_maker(temp_file, 'r')
    w_file = await aio_file_maker(temp_file, 'w')

    writer = Writer(w_file)

    for _ in range(100):
        await writer(uuid)

    await w_file.fsync()

    async for chunk in Reader(r_file, chunk_size=len(uuid)):
        assert chunk == uuid