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"""Tests for parsers.py"""
from unittest import mock
import pytest
from aiohttp import parsers
DATA = b'line1\nline2\nline3\n'
class LinesParser:
"""Lines parser.
Lines parser splits a bytes stream into a chunks of data, each chunk ends
with \\n symbol."""
def __init__(self):
pass
def __call__(self, out, buf):
try:
while True:
chunk = yield from buf.readuntil(b'\n', 0xffff)
out.feed_data(chunk, len(chunk))
except parsers.EofStream:
pass
@pytest.fixture
def lines_parser():
return LinesParser()
def test_at_eof(loop):
proto = parsers.StreamParser(loop=loop)
assert not proto.at_eof()
proto.feed_eof()
assert proto.at_eof()
def test_exception(loop):
stream = parsers.StreamParser(loop=loop)
assert stream.exception() is None
exc = ValueError()
stream.set_exception(exc)
assert stream.exception() is exc
def test_exception_connection_error(loop):
stream = parsers.StreamParser(loop=loop)
assert stream.exception() is None
exc = ConnectionError()
stream.set_exception(exc)
assert stream.exception() is not exc
assert isinstance(stream.exception(), RuntimeError)
assert stream.exception().__cause__ is exc
assert stream.exception().__context__ is exc
def test_exception_waiter(loop, lines_parser):
stream = parsers.StreamParser(loop=loop)
stream._parser = lines_parser
buf = stream._output = parsers.FlowControlDataQueue(
stream, loop=loop)
exc = ValueError()
stream.set_exception(exc)
assert buf.exception() is exc
def test_feed_data(loop):
stream = parsers.StreamParser(loop=loop)
stream.feed_data(DATA)
assert DATA == bytes(stream._buffer)
def test_feed_none_data(loop):
stream = parsers.StreamParser(loop=loop)
stream.feed_data(None)
assert b'' == bytes(stream._buffer)
def test_set_parser_unset_prev(loop, lines_parser):
stream = parsers.StreamParser(loop=loop)
stream.set_parser(lines_parser)
unset = stream.unset_parser = mock.Mock()
stream.set_parser(lines_parser)
assert unset.called
def test_set_parser_exception(loop, lines_parser):
stream = parsers.StreamParser(loop=loop)
exc = ValueError()
stream.set_exception(exc)
s = stream.set_parser(lines_parser)
assert s.exception() is exc
def test_set_parser_feed_existing(loop, lines_parser):
stream = parsers.StreamParser(loop=loop)
stream.feed_data(b'line1')
stream.feed_data(b'\r\nline2\r\ndata')
s = stream.set_parser(lines_parser)
assert ([(bytearray(b'line1\r\n'), 7), (bytearray(b'line2\r\n'), 7)] ==
list(s._buffer))
assert b'data' == bytes(stream._buffer)
assert stream._parser is not None
stream.unset_parser()
assert stream._parser is None
assert b'data' == bytes(stream._buffer)
assert s._eof
def test_set_parser_feed_existing_exc(loop):
def p(out, buf):
yield from buf.read(1)
raise ValueError()
stream = parsers.StreamParser(loop=loop)
stream.feed_data(b'line1')
s = stream.set_parser(p)
assert isinstance(s.exception(), ValueError)
def test_set_parser_feed_existing_eof(loop, lines_parser):
stream = parsers.StreamParser(loop=loop)
stream.feed_data(b'line1')
stream.feed_data(b'\r\nline2\r\ndata')
stream.feed_eof()
s = stream.set_parser(lines_parser)
assert ([(bytearray(b'line1\r\n'), 7), (bytearray(b'line2\r\n'), 7)] ==
list(s._buffer))
assert b'data' == bytes(stream._buffer)
assert stream._parser is None
def test_set_parser_feed_existing_eof_exc(loop):
def p(out, buf):
try:
while True:
yield # read chunk
except parsers.EofStream:
raise ValueError()
stream = parsers.StreamParser(loop=loop)
stream.feed_data(b'line1')
stream.feed_eof()
s = stream.set_parser(p)
assert isinstance(s.exception(), ValueError)
def test_set_parser_feed_existing_eof_unhandled_eof(loop):
def p(out, buf):
while True:
yield # read chunk
stream = parsers.StreamParser(loop=loop)
stream.feed_data(b'line1')
stream.feed_eof()
s = stream.set_parser(p)
assert not s.is_eof()
assert isinstance(s.exception(), RuntimeError)
def test_set_parser_unset(loop, lines_parser):
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(lines_parser)
stream.feed_data(b'line1\r\nline2\r\n')
assert ([(bytearray(b'line1\r\n'), 7), (bytearray(b'line2\r\n'), 7)] ==
list(s._buffer))
assert b'' == bytes(stream._buffer)
stream.unset_parser()
assert s._eof
assert b'' == bytes(stream._buffer)
def test_set_parser_feed_existing_stop(loop):
def LinesParser(out, buf):
try:
chunk = yield from buf.readuntil(b'\n')
out.feed_data(chunk, len(chunk))
chunk = yield from buf.readuntil(b'\n')
out.feed_data(chunk, len(chunk))
finally:
out.feed_eof()
stream = parsers.StreamParser(loop=loop)
stream.feed_data(b'line1')
stream.feed_data(b'\r\nline2\r\ndata')
s = stream.set_parser(LinesParser)
assert b'line1\r\nline2\r\n' == b''.join(d for d, _ in s._buffer)
assert b'data' == bytes(stream._buffer)
assert stream._parser is None
assert s._eof
def test_feed_parser(loop, lines_parser):
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(lines_parser)
stream.feed_data(b'line1')
stream.feed_data(b'\r\nline2\r\ndata')
assert b'data' == bytes(stream._buffer)
stream.feed_eof()
assert ([(bytearray(b'line1\r\n'), 7), (bytearray(b'line2\r\n'), 7)] ==
list(s._buffer))
assert b'data' == bytes(stream._buffer)
assert s.is_eof()
def test_feed_parser_exc(loop):
def p(out, buf):
yield # read chunk
raise ValueError()
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(p)
stream.feed_data(b'line1')
assert isinstance(s.exception(), ValueError)
assert b'' == bytes(stream._buffer)
def test_feed_parser_stop(loop):
def p(out, buf):
yield # chunk
stream = parsers.StreamParser(loop=loop)
stream.set_parser(p)
stream.feed_data(b'line1')
assert stream._parser is None
assert b'' == bytes(stream._buffer)
def test_feed_eof_exc(loop):
def p(out, buf):
try:
while True:
yield # read chunk
except parsers.EofStream:
raise ValueError()
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(p)
stream.feed_data(b'line1')
assert s.exception() is None
stream.feed_eof()
assert isinstance(s.exception(), ValueError)
def test_feed_eof_stop(loop):
def p(out, buf):
try:
while True:
yield # read chunk
except parsers.EofStream:
out.feed_eof()
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(p)
stream.feed_data(b'line1')
stream.feed_eof()
assert s._eof
def test_feed_eof_unhandled_eof(loop):
def p(out, buf):
while True:
yield # read chunk
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(p)
stream.feed_data(b'line1')
stream.feed_eof()
assert not s.is_eof()
assert isinstance(s.exception(), RuntimeError)
def test_feed_parser2(loop, lines_parser):
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(lines_parser)
stream.feed_data(b'line1\r\nline2\r\n')
stream.feed_eof()
assert ([(bytearray(b'line1\r\n'), 7), (bytearray(b'line2\r\n'), 7)] ==
list(s._buffer))
assert b'' == bytes(stream._buffer)
assert s._eof
def test_unset_parser_eof_exc(loop):
def p(out, buf):
try:
while True:
yield # read chunk
except parsers.EofStream:
raise ValueError()
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(p)
stream.feed_data(b'line1')
stream.unset_parser()
assert isinstance(s.exception(), ValueError)
assert stream._parser is None
def test_unset_parser_eof_unhandled_eof(loop):
def p(out, buf):
while True:
yield # read chunk
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(p)
stream.feed_data(b'line1')
stream.unset_parser()
assert isinstance(s.exception(), RuntimeError)
assert not s.is_eof()
def test_unset_parser_stop(loop):
def p(out, buf):
try:
while True:
yield # read chunk
except parsers.EofStream:
out.feed_eof()
stream = parsers.StreamParser(loop=loop)
s = stream.set_parser(p)
stream.feed_data(b'line1')
stream.unset_parser()
assert s._eof
def test_eof_exc(loop):
def p(out, buf):
while True:
yield # read chunk
class CustomEofErr(Exception):
pass
stream = parsers.StreamParser(eof_exc_class=CustomEofErr, loop=loop)
s = stream.set_parser(p)
stream.feed_eof()
assert isinstance(s.exception(), CustomEofErr)
|
