# Tests for aiohttp/protocol.py

import asyncio
from unittest import mock
from urllib.parse import quote

import pytest
from multidict import CIMultiDict
from yarl import URL

import aiohttp
from aiohttp import http_exceptions, streams
from aiohttp.http_parser import (
    DeflateBuffer,
    HttpPayloadParser,
    HttpRequestParserPy,
    HttpResponseParserPy,
)

try:
    import brotli
except ImportError:
    brotli = None


REQUEST_PARSERS = [HttpRequestParserPy]
RESPONSE_PARSERS = [HttpResponseParserPy]

try:
    from aiohttp.http_parser import HttpRequestParserC, HttpResponseParserC

    REQUEST_PARSERS.append(HttpRequestParserC)
    RESPONSE_PARSERS.append(HttpResponseParserC)
except ImportError:  # pragma: no cover
    pass


@pytest.fixture
def protocol():
    return mock.Mock()


@pytest.fixture(params=REQUEST_PARSERS)
def parser(loop, protocol, request):
    # Parser implementations
    return request.param(
        protocol,
        loop,
        2 ** 16,
        max_line_size=8190,
        max_headers=32768,
        max_field_size=8190,
    )


@pytest.fixture(params=REQUEST_PARSERS)
def request_cls(request):
    # Request Parser class
    return request.param


@pytest.fixture(params=RESPONSE_PARSERS)
def response(loop, protocol, request):
    # Parser implementations
    return request.param(
        protocol,
        loop,
        2 ** 16,
        max_line_size=8190,
        max_headers=32768,
        max_field_size=8190,
    )


@pytest.fixture(params=RESPONSE_PARSERS)
def response_cls(request):
    # Parser implementations
    return request.param


@pytest.fixture
def stream():
    return mock.Mock()


def test_parse_headers(parser) -> None:
    text = b"""GET /test HTTP/1.1\r
test: line\r
 continue\r
test2: data\r
\r
"""
    messages, upgrade, tail = parser.feed_data(text)
    assert len(messages) == 1
    msg = messages[0][0]

    assert list(msg.headers.items()) == [("test", "line continue"), ("test2", "data")]
    assert msg.raw_headers == ((b"test", b"line continue"), (b"test2", b"data"))
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade


def test_parse(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    assert len(messages) == 1
    msg, _ = messages[0]
    assert msg.compression is None
    assert not msg.upgrade
    assert msg.method == "GET"
    assert msg.path == "/test"
    assert msg.version == (1, 1)


async def test_parse_body(parser) -> None:
    text = b"GET /test HTTP/1.1\r\nContent-Length: 4\r\n\r\nbody"
    messages, upgrade, tail = parser.feed_data(text)
    assert len(messages) == 1
    _, payload = messages[0]
    body = await payload.read(4)
    assert body == b"body"


async def test_parse_body_with_CRLF(parser) -> None:
    text = b"\r\nGET /test HTTP/1.1\r\nContent-Length: 4\r\n\r\nbody"
    messages, upgrade, tail = parser.feed_data(text)
    assert len(messages) == 1
    _, payload = messages[0]
    body = await payload.read(4)
    assert body == b"body"


def test_parse_delayed(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    assert len(messages) == 0
    assert not upgrade

    messages, upgrade, tail = parser.feed_data(b"\r\n")
    assert len(messages) == 1
    msg = messages[0][0]
    assert msg.method == "GET"


def test_headers_multi_feed(parser) -> None:
    text1 = b"GET /test HTTP/1.1\r\n"
    text2 = b"test: line\r"
    text3 = b"\n continue\r\n\r\n"

    messages, upgrade, tail = parser.feed_data(text1)
    assert len(messages) == 0

    messages, upgrade, tail = parser.feed_data(text2)
    assert len(messages) == 0

    messages, upgrade, tail = parser.feed_data(text3)
    assert len(messages) == 1

    msg = messages[0][0]
    assert list(msg.headers.items()) == [("test", "line continue")]
    assert msg.raw_headers == ((b"test", b"line continue"),)
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade


def test_headers_split_field(parser) -> None:
    text1 = b"GET /test HTTP/1.1\r\n"
    text2 = b"t"
    text3 = b"es"
    text4 = b"t: value\r\n\r\n"

    messages, upgrade, tail = parser.feed_data(text1)
    messages, upgrade, tail = parser.feed_data(text2)
    messages, upgrade, tail = parser.feed_data(text3)
    assert len(messages) == 0
    messages, upgrade, tail = parser.feed_data(text4)
    assert len(messages) == 1

    msg = messages[0][0]
    assert list(msg.headers.items()) == [("test", "value")]
    assert msg.raw_headers == ((b"test", b"value"),)
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade


def test_parse_headers_multi(parser) -> None:
    text = (
        b"GET /test HTTP/1.1\r\n"
        b"Set-Cookie: c1=cookie1\r\n"
        b"Set-Cookie: c2=cookie2\r\n\r\n"
    )

    messages, upgrade, tail = parser.feed_data(text)
    assert len(messages) == 1
    msg = messages[0][0]

    assert list(msg.headers.items()) == [
        ("Set-Cookie", "c1=cookie1"),
        ("Set-Cookie", "c2=cookie2"),
    ]
    assert msg.raw_headers == (
        (b"Set-Cookie", b"c1=cookie1"),
        (b"Set-Cookie", b"c2=cookie2"),
    )
    assert not msg.should_close
    assert msg.compression is None


def test_conn_default_1_0(parser) -> None:
    text = b"GET /test HTTP/1.0\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.should_close


def test_conn_default_1_1(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert not msg.should_close


def test_conn_close(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"connection: close\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.should_close


def test_conn_close_1_0(parser) -> None:
    text = b"GET /test HTTP/1.0\r\n" b"connection: close\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.should_close


def test_conn_keep_alive_1_0(parser) -> None:
    text = b"GET /test HTTP/1.0\r\n" b"connection: keep-alive\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert not msg.should_close


def test_conn_keep_alive_1_1(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"connection: keep-alive\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert not msg.should_close


def test_conn_other_1_0(parser) -> None:
    text = b"GET /test HTTP/1.0\r\n" b"connection: test\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.should_close


def test_conn_other_1_1(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"connection: test\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert not msg.should_close


def test_request_chunked(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"transfer-encoding: chunked\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg, payload = messages[0]
    assert msg.chunked
    assert not upgrade
    assert isinstance(payload, streams.StreamReader)


def test_conn_upgrade(parser) -> None:
    text = (
        b"GET /test HTTP/1.1\r\n"
        b"connection: upgrade\r\n"
        b"upgrade: websocket\r\n\r\n"
    )
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert not msg.should_close
    assert msg.upgrade
    assert upgrade


def test_compression_empty(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"content-encoding: \r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.compression is None


def test_compression_deflate(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"content-encoding: deflate\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.compression == "deflate"


def test_compression_gzip(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"content-encoding: gzip\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.compression == "gzip"


@pytest.mark.skipif(brotli is None, reason="brotli is not installed")
def test_compression_brotli(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"content-encoding: br\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.compression == "br"


def test_compression_unknown(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"content-encoding: compress\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.compression is None


def test_headers_connect(parser) -> None:
    text = b"CONNECT www.google.com HTTP/1.1\r\n" b"content-length: 0\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg, payload = messages[0]
    assert upgrade
    assert isinstance(payload, streams.StreamReader)


def test_headers_old_websocket_key1(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"SEC-WEBSOCKET-KEY1: line\r\n\r\n"

    with pytest.raises(http_exceptions.BadHttpMessage):
        parser.feed_data(text)


def test_headers_content_length_err_1(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"content-length: line\r\n\r\n"

    with pytest.raises(http_exceptions.BadHttpMessage):
        parser.feed_data(text)


def test_headers_content_length_err_2(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"content-length: -1\r\n\r\n"

    with pytest.raises(http_exceptions.BadHttpMessage):
        parser.feed_data(text)


def test_invalid_header(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"test line\r\n\r\n"
    with pytest.raises(http_exceptions.BadHttpMessage):
        parser.feed_data(text)


def test_invalid_name(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"test[]: line\r\n\r\n"

    with pytest.raises(http_exceptions.BadHttpMessage):
        parser.feed_data(text)


@pytest.mark.parametrize("size", [40960, 8191])
def test_max_header_field_size(parser, size) -> None:
    name = b"t" * size
    text = b"GET /test HTTP/1.1\r\n" + name + b":data\r\n\r\n"

    match = f"400, message='Got more than 8190 bytes \\({size}\\) when reading"
    with pytest.raises(http_exceptions.LineTooLong, match=match):
        parser.feed_data(text)


def test_max_header_field_size_under_limit(parser) -> None:
    name = b"t" * 8190
    text = b"GET /test HTTP/1.1\r\n" + name + b":data\r\n\r\n"

    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.method == "GET"
    assert msg.path == "/test"
    assert msg.version == (1, 1)
    assert msg.headers == CIMultiDict({name.decode(): "data"})
    assert msg.raw_headers == ((name, b"data"),)
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade
    assert not msg.chunked
    assert msg.url == URL("/test")


@pytest.mark.parametrize("size", [40960, 8191])
def test_max_header_value_size(parser, size) -> None:
    name = b"t" * size
    text = b"GET /test HTTP/1.1\r\n" b"data:" + name + b"\r\n\r\n"

    match = f"400, message='Got more than 8190 bytes \\({size}\\) when reading"
    with pytest.raises(http_exceptions.LineTooLong, match=match):
        parser.feed_data(text)


def test_max_header_value_size_under_limit(parser) -> None:
    value = b"A" * 8190
    text = b"GET /test HTTP/1.1\r\n" b"data:" + value + b"\r\n\r\n"

    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.method == "GET"
    assert msg.path == "/test"
    assert msg.version == (1, 1)
    assert msg.headers == CIMultiDict({"data": value.decode()})
    assert msg.raw_headers == ((b"data", value),)
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade
    assert not msg.chunked
    assert msg.url == URL("/test")


@pytest.mark.parametrize("size", [40965, 8191])
def test_max_header_value_size_continuation(parser, size) -> None:
    name = b"T" * (size - 5)
    text = b"GET /test HTTP/1.1\r\n" b"data: test\r\n " + name + b"\r\n\r\n"

    match = f"400, message='Got more than 8190 bytes \\({size}\\) when reading"
    with pytest.raises(http_exceptions.LineTooLong, match=match):
        parser.feed_data(text)


def test_max_header_value_size_continuation_under_limit(parser) -> None:
    value = b"A" * 8185
    text = b"GET /test HTTP/1.1\r\n" b"data: test\r\n " + value + b"\r\n\r\n"

    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert msg.method == "GET"
    assert msg.path == "/test"
    assert msg.version == (1, 1)
    assert msg.headers == CIMultiDict({"data": "test " + value.decode()})
    assert msg.raw_headers == ((b"data", b"test " + value),)
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade
    assert not msg.chunked
    assert msg.url == URL("/test")


def test_http_request_parser(parser) -> None:
    text = b"GET /path HTTP/1.1\r\n\r\n"
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]

    assert msg.method == "GET"
    assert msg.path == "/path"
    assert msg.version == (1, 1)
    assert msg.headers == CIMultiDict()
    assert msg.raw_headers == ()
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade
    assert not msg.chunked
    assert msg.url == URL("/path")


def test_http_request_bad_status_line(parser) -> None:
    text = b"getpath \r\n\r\n"
    with pytest.raises(http_exceptions.BadStatusLine):
        parser.feed_data(text)


def test_http_request_upgrade(parser) -> None:
    text = (
        b"GET /test HTTP/1.1\r\n"
        b"connection: upgrade\r\n"
        b"upgrade: websocket\r\n\r\n"
        b"some raw data"
    )
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]
    assert not msg.should_close
    assert msg.upgrade
    assert upgrade
    assert tail == b"some raw data"


def test_http_request_parser_utf8(parser) -> None:
    text = "GET /path HTTP/1.1\r\nx-test:тест\r\n\r\n".encode()
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]

    assert msg.method == "GET"
    assert msg.path == "/path"
    assert msg.version == (1, 1)
    assert msg.headers == CIMultiDict([("X-TEST", "тест")])
    assert msg.raw_headers == ((b"x-test", "тест".encode()),)
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade
    assert not msg.chunked
    assert msg.url == URL("/path")


def test_http_request_parser_non_utf8(parser) -> None:
    text = "GET /path HTTP/1.1\r\nx-test:тест\r\n\r\n".encode("cp1251")
    msg = parser.feed_data(text)[0][0][0]

    assert msg.method == "GET"
    assert msg.path == "/path"
    assert msg.version == (1, 1)
    assert msg.headers == CIMultiDict(
        [("X-TEST", "тест".encode("cp1251").decode("utf8", "surrogateescape"))]
    )
    assert msg.raw_headers == ((b"x-test", "тест".encode("cp1251")),)
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade
    assert not msg.chunked
    assert msg.url == URL("/path")


def test_http_request_parser_two_slashes(parser) -> None:
    text = b"GET //path HTTP/1.1\r\n\r\n"
    msg = parser.feed_data(text)[0][0][0]

    assert msg.method == "GET"
    assert msg.path == "//path"
    assert msg.url.path == "//path"
    assert msg.version == (1, 1)
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade
    assert not msg.chunked


def test_http_request_parser_bad_method(parser) -> None:
    with pytest.raises(http_exceptions.BadStatusLine):
        parser.feed_data(b'=":<G>(e),[T];?" /get HTTP/1.1\r\n\r\n')


def test_http_request_parser_bad_version(parser) -> None:
    with pytest.raises(http_exceptions.BadHttpMessage):
        parser.feed_data(b"GET //get HT/11\r\n\r\n")


@pytest.mark.parametrize("size", [40965, 8191])
def test_http_request_max_status_line(parser, size) -> None:
    path = b"t" * (size - 5)
    match = f"400, message='Got more than 8190 bytes \\({size}\\) when reading"
    with pytest.raises(http_exceptions.LineTooLong, match=match):
        parser.feed_data(b"GET /path" + path + b" HTTP/1.1\r\n\r\n")


def test_http_request_max_status_line_under_limit(parser) -> None:
    path = b"t" * (8190 - 5)
    messages, upgraded, tail = parser.feed_data(
        b"GET /path" + path + b" HTTP/1.1\r\n\r\n"
    )
    msg = messages[0][0]

    assert msg.method == "GET"
    assert msg.path == "/path" + path.decode()
    assert msg.version == (1, 1)
    assert msg.headers == CIMultiDict()
    assert msg.raw_headers == ()
    assert not msg.should_close
    assert msg.compression is None
    assert not msg.upgrade
    assert not msg.chunked
    assert msg.url == URL("/path" + path.decode())


def test_http_response_parser_utf8(response) -> None:
    text = "HTTP/1.1 200 Ok\r\nx-test:тест\r\n\r\n".encode()

    messages, upgraded, tail = response.feed_data(text)
    assert len(messages) == 1
    msg = messages[0][0]

    assert msg.version == (1, 1)
    assert msg.code == 200
    assert msg.reason == "Ok"
    assert msg.headers == CIMultiDict([("X-TEST", "тест")])
    assert msg.raw_headers == ((b"x-test", "тест".encode()),)
    assert not upgraded
    assert not tail


@pytest.mark.parametrize("size", [40962, 8191])
def test_http_response_parser_bad_status_line_too_long(response, size) -> None:
    reason = b"t" * (size - 2)
    match = f"400, message='Got more than 8190 bytes \\({size}\\) when reading"
    with pytest.raises(http_exceptions.LineTooLong, match=match):
        response.feed_data(b"HTTP/1.1 200 Ok" + reason + b"\r\n\r\n")


def test_http_response_parser_status_line_under_limit(response) -> None:
    reason = b"O" * 8190
    messages, upgraded, tail = response.feed_data(
        b"HTTP/1.1 200 " + reason + b"\r\n\r\n"
    )
    msg = messages[0][0]
    assert msg.version == (1, 1)
    assert msg.code == 200
    assert msg.reason == reason.decode()


def test_http_response_parser_bad_version(response) -> None:
    with pytest.raises(http_exceptions.BadHttpMessage):
        response.feed_data(b"HT/11 200 Ok\r\n\r\n")


def test_http_response_parser_no_reason(response) -> None:
    msg = response.feed_data(b"HTTP/1.1 200\r\n\r\n")[0][0][0]

    assert msg.version == (1, 1)
    assert msg.code == 200
    assert msg.reason == ""


def test_http_response_parser_bad(response) -> None:
    with pytest.raises(http_exceptions.BadHttpMessage):
        response.feed_data(b"HTT/1\r\n\r\n")


def test_http_response_parser_code_under_100(response) -> None:
    msg = response.feed_data(b"HTTP/1.1 99 test\r\n\r\n")[0][0][0]
    assert msg.code == 99


def test_http_response_parser_code_above_999(response) -> None:
    with pytest.raises(http_exceptions.BadHttpMessage):
        response.feed_data(b"HTTP/1.1 9999 test\r\n\r\n")


def test_http_response_parser_code_not_int(response) -> None:
    with pytest.raises(http_exceptions.BadHttpMessage):
        response.feed_data(b"HTTP/1.1 ttt test\r\n\r\n")


def test_http_request_chunked_payload(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"transfer-encoding: chunked\r\n\r\n"
    msg, payload = parser.feed_data(text)[0][0]

    assert msg.chunked
    assert not payload.is_eof()
    assert isinstance(payload, streams.StreamReader)

    parser.feed_data(b"4\r\ndata\r\n4\r\nline\r\n0\r\n\r\n")

    assert b"dataline" == b"".join(d for d in payload._buffer)
    assert [4, 8] == payload._http_chunk_splits
    assert payload.is_eof()


def test_http_request_chunked_payload_and_next_message(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"transfer-encoding: chunked\r\n\r\n"
    msg, payload = parser.feed_data(text)[0][0]

    messages, upgraded, tail = parser.feed_data(
        b"4\r\ndata\r\n4\r\nline\r\n0\r\n\r\n"
        b"POST /test2 HTTP/1.1\r\n"
        b"transfer-encoding: chunked\r\n\r\n"
    )

    assert b"dataline" == b"".join(d for d in payload._buffer)
    assert [4, 8] == payload._http_chunk_splits
    assert payload.is_eof()

    assert len(messages) == 1
    msg2, payload2 = messages[0]

    assert msg2.method == "POST"
    assert msg2.chunked
    assert not payload2.is_eof()


def test_http_request_chunked_payload_chunks(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"transfer-encoding: chunked\r\n\r\n"
    msg, payload = parser.feed_data(text)[0][0]

    parser.feed_data(b"4\r\ndata\r")
    parser.feed_data(b"\n4")
    parser.feed_data(b"\r")
    parser.feed_data(b"\n")
    parser.feed_data(b"li")
    parser.feed_data(b"ne\r\n0\r\n")
    parser.feed_data(b"test: test\r\n")

    assert b"dataline" == b"".join(d for d in payload._buffer)
    assert [4, 8] == payload._http_chunk_splits
    assert not payload.is_eof()

    parser.feed_data(b"\r\n")
    assert b"dataline" == b"".join(d for d in payload._buffer)
    assert [4, 8] == payload._http_chunk_splits
    assert payload.is_eof()


def test_parse_chunked_payload_chunk_extension(parser) -> None:
    text = b"GET /test HTTP/1.1\r\n" b"transfer-encoding: chunked\r\n\r\n"
    msg, payload = parser.feed_data(text)[0][0]

    parser.feed_data(b"4;test\r\ndata\r\n4\r\nline\r\n0\r\ntest: test\r\n\r\n")

    assert b"dataline" == b"".join(d for d in payload._buffer)
    assert [4, 8] == payload._http_chunk_splits
    assert payload.is_eof()


def _test_parse_no_length_or_te_on_post(loop, protocol, request_cls):
    parser = request_cls(protocol, loop, readall=True)
    text = b"POST /test HTTP/1.1\r\n\r\n"
    msg, payload = parser.feed_data(text)[0][0]

    assert payload.is_eof()


def test_parse_payload_response_without_body(loop, protocol, response_cls) -> None:
    parser = response_cls(protocol, loop, 2 ** 16, response_with_body=False)
    text = b"HTTP/1.1 200 Ok\r\n" b"content-length: 10\r\n\r\n"
    msg, payload = parser.feed_data(text)[0][0]

    assert payload.is_eof()


def test_parse_length_payload(response) -> None:
    text = b"HTTP/1.1 200 Ok\r\n" b"content-length: 4\r\n\r\n"
    msg, payload = response.feed_data(text)[0][0]
    assert not payload.is_eof()

    response.feed_data(b"da")
    response.feed_data(b"t")
    response.feed_data(b"aHT")

    assert payload.is_eof()
    assert b"data" == b"".join(d for d in payload._buffer)


def test_parse_no_length_payload(parser) -> None:
    text = b"PUT / HTTP/1.1\r\n\r\n"
    msg, payload = parser.feed_data(text)[0][0]
    assert payload.is_eof()


def test_partial_url(parser) -> None:
    messages, upgrade, tail = parser.feed_data(b"GET /te")
    assert len(messages) == 0
    messages, upgrade, tail = parser.feed_data(b"st HTTP/1.1\r\n\r\n")
    assert len(messages) == 1

    msg, payload = messages[0]

    assert msg.method == "GET"
    assert msg.path == "/test"
    assert msg.version == (1, 1)
    assert payload.is_eof()


def test_url_parse_non_strict_mode(parser) -> None:
    payload = "GET /test/тест HTTP/1.1\r\n\r\n".encode()
    messages, upgrade, tail = parser.feed_data(payload)
    assert len(messages) == 1

    msg, payload = messages[0]

    assert msg.method == "GET"
    assert msg.path == "/test/тест"
    assert msg.version == (1, 1)
    assert payload.is_eof()


@pytest.mark.parametrize(
    ("uri", "path", "query", "fragment"),
    [
        ("/path%23frag", "/path#frag", {}, ""),
        ("/path%2523frag", "/path%23frag", {}, ""),
        ("/path?key=value%23frag", "/path", {"key": "value#frag"}, ""),
        ("/path?key=value%2523frag", "/path", {"key": "value%23frag"}, ""),
        ("/path#frag%20", "/path", {}, "frag "),
        ("/path#frag%2520", "/path", {}, "frag%20"),
    ],
)
def test_parse_uri_percent_encoded(parser, uri, path, query, fragment) -> None:
    text = (f"GET {uri} HTTP/1.1\r\n\r\n").encode()
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]

    assert msg.path == uri
    assert msg.url == URL(uri)
    assert msg.url.path == path
    assert msg.url.query == query
    assert msg.url.fragment == fragment


def test_parse_uri_utf8(parser) -> None:
    text = ("GET /путь?ключ=знач#фраг HTTP/1.1\r\n\r\n").encode()
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]

    assert msg.path == "/путь?ключ=знач#фраг"
    assert msg.url.path == "/путь"
    assert msg.url.query == {"ключ": "знач"}
    assert msg.url.fragment == "фраг"


def test_parse_uri_utf8_percent_encoded(parser) -> None:
    text = (
        "GET %s HTTP/1.1\r\n\r\n" % quote("/путь?ключ=знач#фраг", safe="/?=#")
    ).encode()
    messages, upgrade, tail = parser.feed_data(text)
    msg = messages[0][0]

    assert msg.path == quote("/путь?ключ=знач#фраг", safe="/?=#")
    assert msg.url == URL("/путь?ключ=знач#фраг")
    assert msg.url.path == "/путь"
    assert msg.url.query == {"ключ": "знач"}
    assert msg.url.fragment == "фраг"


@pytest.mark.skipif(
    "HttpRequestParserC" not in dir(aiohttp.http_parser),
    reason="C based HTTP parser not available",
)
def test_parse_bad_method_for_c_parser_raises(loop, protocol):
    payload = b"GET1 /test HTTP/1.1\r\n\r\n"
    parser = HttpRequestParserC(
        protocol,
        loop,
        2 ** 16,
        max_line_size=8190,
        max_headers=32768,
        max_field_size=8190,
    )

    with pytest.raises(aiohttp.http_exceptions.BadStatusLine):
        messages, upgrade, tail = parser.feed_data(payload)


class TestParsePayload:
    async def test_parse_eof_payload(self, stream) -> None:
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, readall=True)
        p.feed_data(b"data")
        p.feed_eof()

        assert out.is_eof()
        assert [(bytearray(b"data"), 4)] == list(out._buffer)

    async def test_parse_no_body(self, stream) -> None:
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, method="PUT")

        assert out.is_eof()
        assert p.done

    async def test_parse_length_payload_eof(self, stream) -> None:
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )

        p = HttpPayloadParser(out, length=4)
        p.feed_data(b"da")

        with pytest.raises(http_exceptions.ContentLengthError):
            p.feed_eof()

    async def test_parse_chunked_payload_size_error(self, stream) -> None:
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, chunked=True)
        with pytest.raises(http_exceptions.TransferEncodingError):
            p.feed_data(b"blah\r\n")
        assert isinstance(out.exception(), http_exceptions.TransferEncodingError)

    async def test_parse_chunked_payload_split_end(self, protocol) -> None:
        out = aiohttp.StreamReader(protocol, 2 ** 16, loop=None)
        p = HttpPayloadParser(out, chunked=True)
        p.feed_data(b"4\r\nasdf\r\n0\r\n")
        p.feed_data(b"\r\n")

        assert out.is_eof()
        assert b"asdf" == b"".join(out._buffer)

    async def test_parse_chunked_payload_split_end2(self, protocol) -> None:
        out = aiohttp.StreamReader(protocol, 2 ** 16, loop=None)
        p = HttpPayloadParser(out, chunked=True)
        p.feed_data(b"4\r\nasdf\r\n0\r\n\r")
        p.feed_data(b"\n")

        assert out.is_eof()
        assert b"asdf" == b"".join(out._buffer)

    async def test_parse_chunked_payload_split_end_trailers(self, protocol) -> None:
        out = aiohttp.StreamReader(protocol, 2 ** 16, loop=None)
        p = HttpPayloadParser(out, chunked=True)
        p.feed_data(b"4\r\nasdf\r\n0\r\n")
        p.feed_data(b"Content-MD5: 912ec803b2ce49e4a541068d495ab570\r\n")
        p.feed_data(b"\r\n")

        assert out.is_eof()
        assert b"asdf" == b"".join(out._buffer)

    async def test_parse_chunked_payload_split_end_trailers2(self, protocol) -> None:
        out = aiohttp.StreamReader(protocol, 2 ** 16, loop=None)
        p = HttpPayloadParser(out, chunked=True)
        p.feed_data(b"4\r\nasdf\r\n0\r\n")
        p.feed_data(b"Content-MD5: 912ec803b2ce49e4a541068d495ab570\r\n\r")
        p.feed_data(b"\n")

        assert out.is_eof()
        assert b"asdf" == b"".join(out._buffer)

    async def test_parse_chunked_payload_split_end_trailers3(self, protocol) -> None:
        out = aiohttp.StreamReader(protocol, 2 ** 16, loop=None)
        p = HttpPayloadParser(out, chunked=True)
        p.feed_data(b"4\r\nasdf\r\n0\r\nContent-MD5: ")
        p.feed_data(b"912ec803b2ce49e4a541068d495ab570\r\n\r\n")

        assert out.is_eof()
        assert b"asdf" == b"".join(out._buffer)

    async def test_parse_chunked_payload_split_end_trailers4(self, protocol) -> None:
        out = aiohttp.StreamReader(protocol, 2 ** 16, loop=None)
        p = HttpPayloadParser(out, chunked=True)
        p.feed_data(b"4\r\nasdf\r\n0\r\n" b"C")
        p.feed_data(b"ontent-MD5: 912ec803b2ce49e4a541068d495ab570\r\n\r\n")

        assert out.is_eof()
        assert b"asdf" == b"".join(out._buffer)

    async def test_http_payload_parser_length(self, stream) -> None:
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, length=2)
        eof, tail = p.feed_data(b"1245")
        assert eof

        assert b"12" == b"".join(d for d, _ in out._buffer)
        assert b"45" == tail

    async def test_http_payload_parser_deflate(self, stream) -> None:
        # c=compressobj(wbits=15); b''.join([c.compress(b'data'), c.flush()])
        COMPRESSED = b"x\x9cKI,I\x04\x00\x04\x00\x01\x9b"

        length = len(COMPRESSED)
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, length=length, compression="deflate")
        p.feed_data(COMPRESSED)
        assert b"data" == b"".join(d for d, _ in out._buffer)
        assert out.is_eof()

    async def test_http_payload_parser_deflate_no_hdrs(self, stream) -> None:
        """Tests incorrectly formed data (no zlib headers) """

        # c=compressobj(wbits=-15); b''.join([c.compress(b'data'), c.flush()])
        COMPRESSED = b"KI,I\x04\x00"

        length = len(COMPRESSED)
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, length=length, compression="deflate")
        p.feed_data(COMPRESSED)
        assert b"data" == b"".join(d for d, _ in out._buffer)
        assert out.is_eof()

    async def test_http_payload_parser_deflate_light(self, stream) -> None:
        # c=compressobj(wbits=9); b''.join([c.compress(b'data'), c.flush()])
        COMPRESSED = b"\x18\x95KI,I\x04\x00\x04\x00\x01\x9b"

        length = len(COMPRESSED)
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, length=length, compression="deflate")
        p.feed_data(COMPRESSED)
        assert b"data" == b"".join(d for d, _ in out._buffer)
        assert out.is_eof()

    async def test_http_payload_parser_deflate_split(self, stream) -> None:
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, compression="deflate", readall=True)
        # Feeding one correct byte should be enough to choose exact
        # deflate decompressor
        p.feed_data(b"x", 1)
        p.feed_data(b"\x9cKI,I\x04\x00\x04\x00\x01\x9b", 11)
        p.feed_eof()
        assert b"data" == b"".join(d for d, _ in out._buffer)

    async def test_http_payload_parser_deflate_split_err(self, stream) -> None:
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, compression="deflate", readall=True)
        # Feeding one wrong byte should be enough to choose exact
        # deflate decompressor
        p.feed_data(b"K", 1)
        p.feed_data(b"I,I\x04\x00", 5)
        p.feed_eof()
        assert b"data" == b"".join(d for d, _ in out._buffer)

    async def test_http_payload_parser_length_zero(self, stream) -> None:
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, length=0)
        assert p.done
        assert out.is_eof()

    @pytest.mark.skipif(brotli is None, reason="brotli is not installed")
    async def test_http_payload_brotli(self, stream) -> None:
        compressed = brotli.compress(b"brotli data")
        out = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        p = HttpPayloadParser(out, length=len(compressed), compression="br")
        p.feed_data(compressed)
        assert b"brotli data" == b"".join(d for d, _ in out._buffer)
        assert out.is_eof()


class TestDeflateBuffer:
    async def test_feed_data(self, stream) -> None:
        buf = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        dbuf = DeflateBuffer(buf, "deflate")

        dbuf.decompressor = mock.Mock()
        dbuf.decompressor.decompress.return_value = b"line"

        # First byte should be b'x' in order code not to change the decoder.
        dbuf.feed_data(b"xxxx", 4)
        assert [b"line"] == list(d for d, _ in buf._buffer)

    async def test_feed_data_err(self, stream) -> None:
        buf = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        dbuf = DeflateBuffer(buf, "deflate")

        exc = ValueError()
        dbuf.decompressor = mock.Mock()
        dbuf.decompressor.decompress.side_effect = exc

        with pytest.raises(http_exceptions.ContentEncodingError):
            # Should be more than 4 bytes to trigger deflate FSM error.
            # Should start with b'x', otherwise code switch mocked decoder.
            dbuf.feed_data(b"xsomedata", 9)

    async def test_feed_eof(self, stream) -> None:
        buf = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        dbuf = DeflateBuffer(buf, "deflate")

        dbuf.decompressor = mock.Mock()
        dbuf.decompressor.flush.return_value = b"line"

        dbuf.feed_eof()
        assert [b"line"] == list(d for d, _ in buf._buffer)
        assert buf._eof

    async def test_feed_eof_err_deflate(self, stream) -> None:
        buf = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        dbuf = DeflateBuffer(buf, "deflate")

        dbuf.decompressor = mock.Mock()
        dbuf.decompressor.flush.return_value = b"line"
        dbuf.decompressor.eof = False

        with pytest.raises(http_exceptions.ContentEncodingError):
            dbuf.feed_eof()

    async def test_feed_eof_no_err_gzip(self, stream) -> None:
        buf = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        dbuf = DeflateBuffer(buf, "gzip")

        dbuf.decompressor = mock.Mock()
        dbuf.decompressor.flush.return_value = b"line"
        dbuf.decompressor.eof = False

        dbuf.feed_eof()
        assert [b"line"] == list(d for d, _ in buf._buffer)

    async def test_feed_eof_no_err_brotli(self, stream) -> None:
        buf = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        dbuf = DeflateBuffer(buf, "br")

        dbuf.decompressor = mock.Mock()
        dbuf.decompressor.flush.return_value = b"line"
        dbuf.decompressor.eof = False

        dbuf.feed_eof()
        assert [b"line"] == list(d for d, _ in buf._buffer)

    async def test_empty_body(self, stream) -> None:
        buf = aiohttp.FlowControlDataQueue(
            stream, 2 ** 16, loop=asyncio.get_event_loop()
        )
        dbuf = DeflateBuffer(buf, "deflate")
        dbuf.feed_eof()

        assert buf.at_eof()