File: test_client_request.py

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# coding: utf-8

import asyncio
import hashlib
import io
import os.path
import urllib.parse
import zlib
from http.cookies import SimpleCookie
from unittest import mock

import pytest
from async_generator import async_generator, yield_
from multidict import CIMultiDict, CIMultiDictProxy, istr
from yarl import URL

import aiohttp
from aiohttp import BaseConnector, hdrs, payload
from aiohttp.client_reqrep import (ClientRequest, ClientResponse, Fingerprint,
                                   _merge_ssl_params)
from aiohttp.test_utils import make_mocked_coro


@pytest.fixture
def make_request(loop):
    request = None

    def maker(method, url, *args, **kwargs):
        nonlocal request
        request = ClientRequest(method, URL(url), *args, loop=loop, **kwargs)
        return request

    yield maker
    if request is not None:
        loop.run_until_complete(request.close())


@pytest.fixture
def buf():
    return bytearray()


@pytest.fixture
def protocol(loop, transport):
    protocol = mock.Mock()
    protocol.transport = transport
    protocol._drain_helper.return_value = loop.create_future()
    protocol._drain_helper.return_value.set_result(None)
    return protocol


@pytest.fixture
def transport(buf):
    transport = mock.Mock()

    def write(chunk):
        buf.extend(chunk)

    async def write_eof():
        pass

    transport.write.side_effect = write
    transport.write_eof.side_effect = write_eof
    transport.is_closing.return_value = False

    return transport


@pytest.fixture
def conn(transport, protocol):
    return mock.Mock(
        transport=transport,
        protocol=protocol
    )


def test_method1(make_request) -> None:
    req = make_request('get', 'http://python.org/')
    assert req.method == 'GET'


def test_method2(make_request) -> None:
    req = make_request('head', 'http://python.org/')
    assert req.method == 'HEAD'


def test_method3(make_request) -> None:
    req = make_request('HEAD', 'http://python.org/')
    assert req.method == 'HEAD'


def test_version_1_0(make_request) -> None:
    req = make_request('get', 'http://python.org/', version='1.0')
    assert req.version == (1, 0)


def test_version_default(make_request) -> None:
    req = make_request('get', 'http://python.org/')
    assert req.version == (1, 1)


def test_request_info(make_request) -> None:
    req = make_request('get', 'http://python.org/')
    assert req.request_info == aiohttp.RequestInfo(URL('http://python.org/'),
                                                   'GET',
                                                   req.headers)


def test_request_info_with_fragment(make_request) -> None:
    req = make_request('get', 'http://python.org/#urlfragment')
    assert req.request_info == aiohttp.RequestInfo(
        URL('http://python.org/'),
        'GET', req.headers,
        URL('http://python.org/#urlfragment'))


def test_version_err(make_request) -> None:
    with pytest.raises(ValueError):
        make_request('get', 'http://python.org/', version='1.c')


def test_https_proxy(make_request) -> None:
    with pytest.raises(ValueError):
        make_request(
            'get', 'http://python.org/', proxy=URL('https://proxy.org'))


def test_keep_alive(make_request) -> None:
    req = make_request('get', 'http://python.org/', version=(0, 9))
    assert not req.keep_alive()

    req = make_request('get', 'http://python.org/', version=(1, 0))
    assert not req.keep_alive()

    req = make_request('get', 'http://python.org/',
                       version=(1, 0), headers={'connection': 'keep-alive'})
    assert req.keep_alive()

    req = make_request('get', 'http://python.org/', version=(1, 1))
    assert req.keep_alive()

    req = make_request('get', 'http://python.org/',
                       version=(1, 1), headers={'connection': 'close'})
    assert not req.keep_alive()


def test_host_port_default_http(make_request) -> None:
    req = make_request('get', 'http://python.org/')
    assert req.host == 'python.org'
    assert req.port == 80
    assert not req.ssl


def test_host_port_default_https(make_request) -> None:
    req = make_request('get', 'https://python.org/')
    assert req.host == 'python.org'
    assert req.port == 443
    assert req.is_ssl()


def test_host_port_nondefault_http(make_request) -> None:
    req = make_request('get', 'http://python.org:960/')
    assert req.host == 'python.org'
    assert req.port == 960
    assert not req.is_ssl()


def test_host_port_nondefault_https(make_request) -> None:
    req = make_request('get', 'https://python.org:960/')
    assert req.host == 'python.org'
    assert req.port == 960
    assert req.is_ssl()


def test_host_port_default_ws(make_request) -> None:
    req = make_request('get', 'ws://python.org/')
    assert req.host == 'python.org'
    assert req.port == 80
    assert not req.is_ssl()


def test_host_port_default_wss(make_request) -> None:
    req = make_request('get', 'wss://python.org/')
    assert req.host == 'python.org'
    assert req.port == 443
    assert req.is_ssl()


def test_host_port_nondefault_ws(make_request) -> None:
    req = make_request('get', 'ws://python.org:960/')
    assert req.host == 'python.org'
    assert req.port == 960
    assert not req.is_ssl()


def test_host_port_nondefault_wss(make_request) -> None:
    req = make_request('get', 'wss://python.org:960/')
    assert req.host == 'python.org'
    assert req.port == 960
    assert req.is_ssl()


def test_host_port_err(make_request) -> None:
    with pytest.raises(ValueError):
        make_request('get', 'http://python.org:123e/')


def test_hostname_err(make_request) -> None:
    with pytest.raises(ValueError):
        make_request('get', 'http://:8080/')


def test_host_header_host_first(make_request) -> None:
    req = make_request('get', 'http://python.org/')
    assert list(req.headers)[0] == 'Host'


def test_host_header_host_without_port(make_request) -> None:
    req = make_request('get', 'http://python.org/')
    assert req.headers['HOST'] == 'python.org'


def test_host_header_host_with_default_port(make_request) -> None:
    req = make_request('get', 'http://python.org:80/')
    assert req.headers['HOST'] == 'python.org'


def test_host_header_host_with_nondefault_port(make_request) -> None:
    req = make_request('get', 'http://python.org:99/')
    assert req.headers['HOST'] == 'python.org:99'


def test_host_header_host_idna_encode(make_request) -> None:
    req = make_request('get', 'http://xn--9caa.com')
    assert req.headers['HOST'] == 'xn--9caa.com'


def test_host_header_host_unicode(make_request) -> None:
    req = make_request('get', 'http://éé.com')
    assert req.headers['HOST'] == 'xn--9caa.com'


def test_host_header_explicit_host(make_request) -> None:
    req = make_request('get', 'http://python.org/',
                       headers={'host': 'example.com'})
    assert req.headers['HOST'] == 'example.com'


def test_host_header_explicit_host_with_port(make_request) -> None:
    req = make_request('get', 'http://python.org/',
                       headers={'host': 'example.com:99'})
    assert req.headers['HOST'] == 'example.com:99'


def test_host_header_ipv4(make_request) -> None:
    req = make_request('get', 'http://127.0.0.2')
    assert req.headers['HOST'] == '127.0.0.2'


def test_host_header_ipv6(make_request) -> None:
    req = make_request('get', 'http://[::2]')
    assert req.headers['HOST'] == '[::2]'


def test_host_header_ipv4_with_port(make_request) -> None:
    req = make_request('get', 'http://127.0.0.2:99')
    assert req.headers['HOST'] == '127.0.0.2:99'


def test_host_header_ipv6_with_port(make_request) -> None:
    req = make_request('get', 'http://[::2]:99')
    assert req.headers['HOST'] == '[::2]:99'


def test_default_loop(loop) -> None:
    asyncio.set_event_loop(loop)
    req = ClientRequest('get', URL('http://python.org/'))
    assert req.loop is loop


def test_default_headers_useragent(make_request) -> None:
    req = make_request('get', 'http://python.org/')

    assert 'SERVER' not in req.headers
    assert 'USER-AGENT' in req.headers


def test_default_headers_useragent_custom(make_request) -> None:
    req = make_request('get', 'http://python.org/',
                       headers={'user-agent': 'my custom agent'})

    assert 'USER-Agent' in req.headers
    assert 'my custom agent' == req.headers['User-Agent']


def test_skip_default_useragent_header(make_request) -> None:
    req = make_request('get', 'http://python.org/',
                       skip_auto_headers=set([istr('user-agent')]))

    assert 'User-Agent' not in req.headers


def test_headers(make_request) -> None:
    req = make_request('post', 'http://python.org/',
                       headers={'Content-Type': 'text/plain'})

    assert 'CONTENT-TYPE' in req.headers
    assert req.headers['CONTENT-TYPE'] == 'text/plain'
    assert req.headers['ACCEPT-ENCODING'] == 'gzip, deflate'


def test_headers_list(make_request) -> None:
    req = make_request('post', 'http://python.org/',
                       headers=[('Content-Type', 'text/plain')])
    assert 'CONTENT-TYPE' in req.headers
    assert req.headers['CONTENT-TYPE'] == 'text/plain'


def test_headers_default(make_request) -> None:
    req = make_request('get', 'http://python.org/',
                       headers={'ACCEPT-ENCODING': 'deflate'})
    assert req.headers['ACCEPT-ENCODING'] == 'deflate'


def test_invalid_url(make_request) -> None:
    with pytest.raises(aiohttp.InvalidURL):
        make_request('get', 'hiwpefhipowhefopw')


def test_no_path(make_request) -> None:
    req = make_request('get', 'http://python.org')
    assert '/' == req.url.path


def test_ipv6_default_http_port(make_request) -> None:
    req = make_request('get', 'http://[2001:db8::1]/')
    assert req.host == '2001:db8::1'
    assert req.port == 80
    assert not req.ssl


def test_ipv6_default_https_port(make_request) -> None:
    req = make_request('get', 'https://[2001:db8::1]/')
    assert req.host == '2001:db8::1'
    assert req.port == 443
    assert req.is_ssl()


def test_ipv6_nondefault_http_port(make_request) -> None:
    req = make_request('get', 'http://[2001:db8::1]:960/')
    assert req.host == '2001:db8::1'
    assert req.port == 960
    assert not req.is_ssl()


def test_ipv6_nondefault_https_port(make_request) -> None:
    req = make_request('get', 'https://[2001:db8::1]:960/')
    assert req.host == '2001:db8::1'
    assert req.port == 960
    assert req.is_ssl()


def test_basic_auth(make_request) -> None:
    req = make_request('get', 'http://python.org',
                       auth=aiohttp.BasicAuth('nkim', '1234'))
    assert 'AUTHORIZATION' in req.headers
    assert 'Basic bmtpbToxMjM0' == req.headers['AUTHORIZATION']


def test_basic_auth_utf8(make_request) -> None:
    req = make_request('get', 'http://python.org',
                       auth=aiohttp.BasicAuth('nkim', 'секрет', 'utf-8'))
    assert 'AUTHORIZATION' in req.headers
    assert 'Basic bmtpbTrRgdC10LrRgNC10YI=' == req.headers['AUTHORIZATION']


def test_basic_auth_tuple_forbidden(make_request) -> None:
    with pytest.raises(TypeError):
        make_request('get', 'http://python.org',
                     auth=('nkim', '1234'))


def test_basic_auth_from_url(make_request) -> None:
    req = make_request('get', 'http://nkim:1234@python.org')
    assert 'AUTHORIZATION' in req.headers
    assert 'Basic bmtpbToxMjM0' == req.headers['AUTHORIZATION']
    assert 'python.org' == req.host


def test_basic_auth_from_url_overridden(make_request) -> None:
    req = make_request('get', 'http://garbage@python.org',
                       auth=aiohttp.BasicAuth('nkim', '1234'))
    assert 'AUTHORIZATION' in req.headers
    assert 'Basic bmtpbToxMjM0' == req.headers['AUTHORIZATION']
    assert 'python.org' == req.host


def test_path_is_not_double_encoded1(make_request) -> None:
    req = make_request('get', "http://0.0.0.0/get/test case")
    assert req.url.raw_path == "/get/test%20case"


def test_path_is_not_double_encoded2(make_request) -> None:
    req = make_request('get', "http://0.0.0.0/get/test%2fcase")
    assert req.url.raw_path == "/get/test%2Fcase"


def test_path_is_not_double_encoded3(make_request) -> None:
    req = make_request('get', "http://0.0.0.0/get/test%20case")
    assert req.url.raw_path == "/get/test%20case"


def test_path_safe_chars_preserved(make_request) -> None:
    req = make_request('get', "http://0.0.0.0/get/:=+/%2B/")
    assert req.url.path == "/get/:=+/+/"


def test_params_are_added_before_fragment1(make_request) -> None:
    req = make_request('GET', "http://example.com/path#fragment",
                       params={"a": "b"})
    assert str(req.url) == "http://example.com/path?a=b"


def test_params_are_added_before_fragment2(make_request) -> None:
    req = make_request('GET', "http://example.com/path?key=value#fragment",
                       params={"a": "b"})
    assert str(req.url) == "http://example.com/path?key=value&a=b"


def test_path_not_contain_fragment1(make_request) -> None:
    req = make_request('GET', "http://example.com/path#fragment")
    assert req.url.path == "/path"


def test_path_not_contain_fragment2(make_request) -> None:
    req = make_request('GET', "http://example.com/path?key=value#fragment")
    assert str(req.url) == "http://example.com/path?key=value"


def test_cookies(make_request) -> None:
    req = make_request('get', 'http://test.com/path',
                       cookies={'cookie1': 'val1'})

    assert 'COOKIE' in req.headers
    assert 'cookie1=val1' == req.headers['COOKIE']


def test_cookies_merge_with_headers(make_request) -> None:
    req = make_request('get', 'http://test.com/path',
                       headers={'cookie': 'cookie1=val1'},
                       cookies={'cookie2': 'val2'})

    assert 'cookie1=val1; cookie2=val2' == req.headers['COOKIE']


def test_unicode_get1(make_request) -> None:
    req = make_request('get', 'http://python.org',
                       params={'foo': 'f\xf8\xf8'})
    assert 'http://python.org/?foo=f%C3%B8%C3%B8' == str(req.url)


def test_unicode_get2(make_request) -> None:
    req = make_request('', 'http://python.org',
                       params={'f\xf8\xf8': 'f\xf8\xf8'})

    assert 'http://python.org/?f%C3%B8%C3%B8=f%C3%B8%C3%B8' == str(req.url)


def test_unicode_get3(make_request) -> None:
    req = make_request('', 'http://python.org', params={'foo': 'foo'})
    assert 'http://python.org/?foo=foo' == str(req.url)


def test_unicode_get4(make_request) -> None:
    def join(*suffix):
        return urllib.parse.urljoin('http://python.org/', '/'.join(suffix))

    req = make_request('', join('\xf8'), params={'foo': 'foo'})
    assert 'http://python.org/%C3%B8?foo=foo' == str(req.url)


def test_query_multivalued_param(make_request) -> None:
    for meth in ClientRequest.ALL_METHODS:
        req = make_request(
            meth, 'http://python.org',
            params=(('test', 'foo'), ('test', 'baz')))

        assert str(req.url) == 'http://python.org/?test=foo&test=baz'


def test_query_str_param(make_request) -> None:
    for meth in ClientRequest.ALL_METHODS:
        req = make_request(meth, 'http://python.org', params='test=foo')
        assert str(req.url) == 'http://python.org/?test=foo'


def test_query_bytes_param_raises(make_request) -> None:
    for meth in ClientRequest.ALL_METHODS:
        with pytest.raises(TypeError):
            make_request(meth, 'http://python.org', params=b'test=foo')


def test_query_str_param_is_not_encoded(make_request) -> None:
    for meth in ClientRequest.ALL_METHODS:
        req = make_request(meth, 'http://python.org', params='test=f+oo')
        assert str(req.url) == 'http://python.org/?test=f+oo'


def test_params_update_path_and_url(make_request) -> None:
    req = make_request('get', 'http://python.org',
                       params=(('test', 'foo'), ('test', 'baz')))
    assert str(req.url) == 'http://python.org/?test=foo&test=baz'


def test_params_empty_path_and_url(make_request) -> None:
    req_empty = make_request('get', 'http://python.org', params={})
    assert str(req_empty.url) == 'http://python.org'
    req_none = make_request('get', 'http://python.org')
    assert str(req_none.url) == 'http://python.org'


def test_gen_netloc_all(make_request) -> None:
    req = make_request('get',
                       'https://aiohttp:pwpwpw@' +
                       '12345678901234567890123456789' +
                       '012345678901234567890:8080')
    assert req.headers['HOST'] == '12345678901234567890123456789' +\
        '012345678901234567890:8080'


def test_gen_netloc_no_port(make_request) -> None:
    req = make_request('get',
                       'https://aiohttp:pwpwpw@' +
                       '12345678901234567890123456789' +
                       '012345678901234567890/')
    assert req.headers['HOST'] == '12345678901234567890123456789' +\
        '012345678901234567890'


async def test_connection_header(loop, conn) -> None:
    req = ClientRequest('get', URL('http://python.org'), loop=loop)
    req.keep_alive = mock.Mock()
    req.headers.clear()

    req.keep_alive.return_value = True
    req.version = (1, 1)
    req.headers.clear()
    await req.send(conn)
    assert req.headers.get('CONNECTION') is None

    req.version = (1, 0)
    req.headers.clear()
    await req.send(conn)
    assert req.headers.get('CONNECTION') == 'keep-alive'

    req.keep_alive.return_value = False
    req.version = (1, 1)
    req.headers.clear()
    await req.send(conn)
    assert req.headers.get('CONNECTION') == 'close'


async def test_no_content_length(loop, conn) -> None:
    req = ClientRequest('get', URL('http://python.org'), loop=loop)
    resp = await req.send(conn)
    assert req.headers.get('CONTENT-LENGTH') is None
    await req.close()
    resp.close()


async def test_no_content_length_head(loop, conn) -> None:
    req = ClientRequest('head', URL('http://python.org'), loop=loop)
    resp = await req.send(conn)
    assert req.headers.get('CONTENT-LENGTH') is None
    await req.close()
    resp.close()


async def test_content_type_auto_header_get(loop, conn) -> None:
    req = ClientRequest('get', URL('http://python.org'), loop=loop)
    resp = await req.send(conn)
    assert 'CONTENT-TYPE' not in req.headers
    resp.close()


async def test_content_type_auto_header_form(loop, conn) -> None:
    req = ClientRequest('post', URL('http://python.org'),
                        data={'hey': 'you'}, loop=loop)
    resp = await req.send(conn)
    assert 'application/x-www-form-urlencoded' == \
        req.headers.get('CONTENT-TYPE')
    resp.close()


async def test_content_type_auto_header_bytes(loop, conn) -> None:
    req = ClientRequest('post', URL('http://python.org'), data=b'hey you',
                        loop=loop)
    resp = await req.send(conn)
    assert 'application/octet-stream' == req.headers.get('CONTENT-TYPE')
    resp.close()


async def test_content_type_skip_auto_header_bytes(loop, conn) -> None:
    req = ClientRequest('post', URL('http://python.org'), data=b'hey you',
                        skip_auto_headers={'Content-Type'},
                        loop=loop)
    resp = await req.send(conn)
    assert 'CONTENT-TYPE' not in req.headers
    resp.close()


async def test_content_type_skip_auto_header_form(loop, conn) -> None:
    req = ClientRequest('post', URL('http://python.org'),
                        data={'hey': 'you'}, loop=loop,
                        skip_auto_headers={'Content-Type'})
    resp = await req.send(conn)
    assert 'CONTENT-TYPE' not in req.headers
    resp.close()


async def test_content_type_auto_header_content_length_no_skip(loop,
                                                               conn) -> None:
    req = ClientRequest('post', URL('http://python.org'),
                        data=io.BytesIO(b'hey'),
                        skip_auto_headers={'Content-Length'},
                        loop=loop)
    resp = await req.send(conn)
    assert req.headers.get('CONTENT-LENGTH') == '3'
    resp.close()


async def test_urlencoded_formdata_charset(loop, conn) -> None:
    req = ClientRequest(
        'post', URL('http://python.org'),
        data=aiohttp.FormData({'hey': 'you'}, charset='koi8-r'), loop=loop)
    await req.send(conn)
    assert 'application/x-www-form-urlencoded; charset=koi8-r' == \
        req.headers.get('CONTENT-TYPE')


async def test_post_data(loop, conn) -> None:
    for meth in ClientRequest.POST_METHODS:
        req = ClientRequest(
            meth, URL('http://python.org/'),
            data={'life': '42'}, loop=loop)
        resp = await req.send(conn)
        assert '/' == req.url.path
        assert b'life=42' == req.body._value
        assert 'application/x-www-form-urlencoded' ==\
            req.headers['CONTENT-TYPE']
        await req.close()
        resp.close()


async def test_pass_falsy_data(loop) -> None:
    with mock.patch(
            'aiohttp.client_reqrep.ClientRequest.update_body_from_data'):
        req = ClientRequest(
            'post', URL('http://python.org/'),
            data={}, loop=loop)
        req.update_body_from_data.assert_called_once_with({})
    await req.close()


async def test_pass_falsy_data_file(loop, tmpdir) -> None:
    testfile = tmpdir.join('tmpfile').open('w+b')
    testfile.write(b'data')
    testfile.seek(0)
    skip = frozenset([hdrs.CONTENT_TYPE])
    req = ClientRequest(
        'post', URL('http://python.org/'),
        data=testfile,
        skip_auto_headers=skip,
        loop=loop)
    assert req.headers.get('CONTENT-LENGTH', None) is not None
    await req.close()


# Elasticsearch API requires to send request body with GET-requests
async def test_get_with_data(loop) -> None:
    for meth in ClientRequest.GET_METHODS:
        req = ClientRequest(
            meth, URL('http://python.org/'), data={'life': '42'},
            loop=loop)
        assert '/' == req.url.path
        assert b'life=42' == req.body._value
        await req.close()


async def test_bytes_data(loop, conn) -> None:
    for meth in ClientRequest.POST_METHODS:
        req = ClientRequest(
            meth, URL('http://python.org/'),
            data=b'binary data', loop=loop)
        resp = await req.send(conn)
        assert '/' == req.url.path
        assert isinstance(req.body, payload.BytesPayload)
        assert b'binary data' == req.body._value
        assert 'application/octet-stream' == req.headers['CONTENT-TYPE']
        await req.close()
        resp.close()


async def test_content_encoding(loop, conn) -> None:
    req = ClientRequest('post', URL('http://python.org/'), data='foo',
                        compress='deflate', loop=loop)
    with mock.patch('aiohttp.client_reqrep.StreamWriter') as m_writer:
        m_writer.return_value.write_headers = make_mocked_coro()
        resp = await req.send(conn)
    assert req.headers['TRANSFER-ENCODING'] == 'chunked'
    assert req.headers['CONTENT-ENCODING'] == 'deflate'
    m_writer.return_value\
        .enable_compression.assert_called_with('deflate')
    await req.close()
    resp.close()


async def test_content_encoding_dont_set_headers_if_no_body(loop,
                                                            conn) -> None:
    req = ClientRequest('post', URL('http://python.org/'),
                        compress='deflate', loop=loop)
    with mock.patch('aiohttp.client_reqrep.http'):
        resp = await req.send(conn)
    assert 'TRANSFER-ENCODING' not in req.headers
    assert 'CONTENT-ENCODING' not in req.headers
    await req.close()
    resp.close()


async def test_content_encoding_header(loop, conn) -> None:
    req = ClientRequest(
        'post', URL('http://python.org/'), data='foo',
        headers={'Content-Encoding': 'deflate'}, loop=loop)
    with mock.patch('aiohttp.client_reqrep.StreamWriter') as m_writer:
        m_writer.return_value.write_headers = make_mocked_coro()
        resp = await req.send(conn)

    assert not m_writer.return_value.enable_compression.called
    assert not m_writer.return_value.enable_chunking.called
    await req.close()
    resp.close()


async def test_compress_and_content_encoding(loop, conn) -> None:
    with pytest.raises(ValueError):
        ClientRequest('post', URL('http://python.org/'), data='foo',
                      headers={'content-encoding': 'deflate'},
                      compress='deflate', loop=loop)


async def test_chunked(loop, conn) -> None:
    req = ClientRequest(
        'post', URL('http://python.org/'),
        headers={'TRANSFER-ENCODING': 'gzip'}, loop=loop)
    resp = await req.send(conn)
    assert 'gzip' == req.headers['TRANSFER-ENCODING']
    await req.close()
    resp.close()


async def test_chunked2(loop, conn) -> None:
    req = ClientRequest(
        'post', URL('http://python.org/'),
        headers={'Transfer-encoding': 'chunked'}, loop=loop)
    resp = await req.send(conn)
    assert 'chunked' == req.headers['TRANSFER-ENCODING']
    await req.close()
    resp.close()


async def test_chunked_explicit(loop, conn) -> None:
    req = ClientRequest(
        'post', URL('http://python.org/'), chunked=True, loop=loop)
    with mock.patch('aiohttp.client_reqrep.StreamWriter') as m_writer:
        m_writer.return_value.write_headers = make_mocked_coro()
        resp = await req.send(conn)

    assert 'chunked' == req.headers['TRANSFER-ENCODING']
    m_writer.return_value.enable_chunking.assert_called_with()
    await req.close()
    resp.close()


async def test_chunked_length(loop, conn) -> None:
    with pytest.raises(ValueError):
        ClientRequest(
            'post', URL('http://python.org/'),
            headers={'CONTENT-LENGTH': '1000'}, chunked=True, loop=loop)


async def test_chunked_transfer_encoding(loop, conn) -> None:
    with pytest.raises(ValueError):
        ClientRequest(
            'post', URL('http://python.org/'),
            headers={'TRANSFER-ENCODING': 'chunked'}, chunked=True, loop=loop)


async def test_file_upload_not_chunked(loop) -> None:
    here = os.path.dirname(__file__)
    fname = os.path.join(here, 'sample.key')
    with open(fname, 'rb') as f:
        req = ClientRequest(
            'post', URL('http://python.org/'),
            data=f,
            loop=loop)
        assert not req.chunked
        assert req.headers['CONTENT-LENGTH'] == str(os.path.getsize(fname))
        await req.close()


async def test_precompressed_data_stays_intact(loop) -> None:
    data = zlib.compress(b'foobar')
    req = ClientRequest(
        'post', URL('http://python.org/'),
        data=data,
        headers={'CONTENT-ENCODING': 'deflate'},
        compress=False,
        loop=loop)
    assert not req.compress
    assert not req.chunked
    assert req.headers['CONTENT-ENCODING'] == 'deflate'
    await req.close()


async def test_file_upload_not_chunked_seek(loop) -> None:
    here = os.path.dirname(__file__)
    fname = os.path.join(here, 'sample.key')
    with open(fname, 'rb') as f:
        f.seek(100)
        req = ClientRequest(
            'post', URL('http://python.org/'),
            data=f,
            loop=loop)
        assert req.headers['CONTENT-LENGTH'] == \
            str(os.path.getsize(fname) - 100)
        await req.close()


async def test_file_upload_force_chunked(loop) -> None:
    here = os.path.dirname(__file__)
    fname = os.path.join(here, 'sample.key')
    with open(fname, 'rb') as f:
        req = ClientRequest(
            'post', URL('http://python.org/'),
            data=f,
            chunked=True,
            loop=loop)
        assert req.chunked
        assert 'CONTENT-LENGTH' not in req.headers
        await req.close()


async def test_expect100(loop, conn) -> None:
    req = ClientRequest('get', URL('http://python.org/'),
                        expect100=True, loop=loop)
    resp = await req.send(conn)
    assert '100-continue' == req.headers['EXPECT']
    assert req._continue is not None
    req.terminate()
    resp.close()


async def test_expect_100_continue_header(loop, conn) -> None:
    req = ClientRequest('get', URL('http://python.org/'),
                        headers={'expect': '100-continue'}, loop=loop)
    resp = await req.send(conn)
    assert '100-continue' == req.headers['EXPECT']
    assert req._continue is not None
    req.terminate()
    resp.close()


async def test_data_stream(loop, buf, conn) -> None:
    @async_generator
    async def gen():
        await yield_(b'binary data')
        await yield_(b' result')

    req = ClientRequest(
        'POST', URL('http://python.org/'), data=gen(), loop=loop)
    assert req.chunked
    assert req.headers['TRANSFER-ENCODING'] == 'chunked'

    resp = await req.send(conn)
    assert asyncio.isfuture(req._writer)
    await resp.wait_for_close()
    assert req._writer is None
    assert buf.split(b'\r\n\r\n', 1)[1] == \
        b'b\r\nbinary data\r\n7\r\n result\r\n0\r\n\r\n'
    await req.close()


async def test_data_stream_deprecated(loop, buf, conn) -> None:
    with pytest.warns(DeprecationWarning):
        @aiohttp.streamer
        async def gen(writer):
            await writer.write(b'binary data')
            await writer.write(b' result')

    req = ClientRequest(
        'POST', URL('http://python.org/'), data=gen(), loop=loop)
    assert req.chunked
    assert req.headers['TRANSFER-ENCODING'] == 'chunked'

    resp = await req.send(conn)
    assert asyncio.isfuture(req._writer)
    await resp.wait_for_close()
    assert req._writer is None
    assert buf.split(b'\r\n\r\n', 1)[1] == \
        b'b\r\nbinary data\r\n7\r\n result\r\n0\r\n\r\n'
    await req.close()


async def test_data_file(loop, buf, conn) -> None:
    req = ClientRequest(
        'POST', URL('http://python.org/'),
        data=io.BufferedReader(io.BytesIO(b'*' * 2)),
        loop=loop)
    assert req.chunked
    assert isinstance(req.body, payload.BufferedReaderPayload)
    assert req.headers['TRANSFER-ENCODING'] == 'chunked'

    resp = await req.send(conn)
    assert asyncio.isfuture(req._writer)
    await resp.wait_for_close()
    assert req._writer is None
    assert buf.split(b'\r\n\r\n', 1)[1] == \
        b'2\r\n' + b'*' * 2 + b'\r\n0\r\n\r\n'
    await req.close()


async def test_data_stream_exc(loop, conn) -> None:
    fut = loop.create_future()

    @async_generator
    async def gen():
        await yield_(b'binary data')
        await fut

    req = ClientRequest(
        'POST', URL('http://python.org/'), data=gen(), loop=loop)
    assert req.chunked
    assert req.headers['TRANSFER-ENCODING'] == 'chunked'

    async def throw_exc():
        await asyncio.sleep(0.01, loop=loop)
        fut.set_exception(ValueError)

    loop.create_task(throw_exc())

    await req.send(conn)
    await req._writer
    # assert conn.close.called
    assert conn.protocol.set_exception.called
    await req.close()


async def test_data_stream_exc_deprecated(loop, conn) -> None:
    fut = loop.create_future()

    with pytest.warns(DeprecationWarning):
        @aiohttp.streamer
        async def gen(writer):
            await writer.write(b'binary data')
            await fut

    req = ClientRequest(
        'POST', URL('http://python.org/'), data=gen(), loop=loop)
    assert req.chunked
    assert req.headers['TRANSFER-ENCODING'] == 'chunked'

    async def throw_exc():
        await asyncio.sleep(0.01, loop=loop)
        fut.set_exception(ValueError)

    loop.create_task(throw_exc())

    await req.send(conn)
    await req._writer
    # assert conn.close.called
    assert conn.protocol.set_exception.called
    await req.close()


async def test_data_stream_exc_chain(loop, conn) -> None:
    fut = loop.create_future()

    @async_generator
    async def gen():
        await fut

    req = ClientRequest('POST', URL('http://python.org/'),
                        data=gen(), loop=loop)

    inner_exc = ValueError()

    async def throw_exc():
        await asyncio.sleep(0.01, loop=loop)
        fut.set_exception(inner_exc)

    loop.create_task(throw_exc())

    await req.send(conn)
    await req._writer
    # assert connection.close.called
    assert conn.protocol.set_exception.called
    outer_exc = conn.protocol.set_exception.call_args[0][0]
    assert isinstance(outer_exc, ValueError)
    assert inner_exc is outer_exc
    assert inner_exc is outer_exc
    await req.close()


async def test_data_stream_exc_chain_deprecated(loop, conn) -> None:
    fut = loop.create_future()

    with pytest.warns(DeprecationWarning):
        @aiohttp.streamer
        async def gen(writer):
            await fut

    req = ClientRequest('POST', URL('http://python.org/'),
                        data=gen(), loop=loop)

    inner_exc = ValueError()

    async def throw_exc():
        await asyncio.sleep(0.01, loop=loop)
        fut.set_exception(inner_exc)

    loop.create_task(throw_exc())

    await req.send(conn)
    await req._writer
    # assert connection.close.called
    assert conn.protocol.set_exception.called
    outer_exc = conn.protocol.set_exception.call_args[0][0]
    assert isinstance(outer_exc, ValueError)
    assert inner_exc is outer_exc
    assert inner_exc is outer_exc
    await req.close()


async def test_data_stream_continue(loop, buf, conn) -> None:
    @async_generator
    async def gen():
        await yield_(b'binary data')
        await yield_(b' result')

    req = ClientRequest(
        'POST', URL('http://python.org/'), data=gen(),
        expect100=True, loop=loop)
    assert req.chunked

    async def coro():
        await asyncio.sleep(0.0001, loop=loop)
        req._continue.set_result(1)

    loop.create_task(coro())

    resp = await req.send(conn)
    await req._writer
    assert buf.split(b'\r\n\r\n', 1)[1] == \
        b'b\r\nbinary data\r\n7\r\n result\r\n0\r\n\r\n'
    await req.close()
    resp.close()


async def test_data_stream_continue_deprecated(loop, buf, conn) -> None:
    with pytest.warns(DeprecationWarning):
        @aiohttp.streamer
        async def gen(writer):
            await writer.write(b'binary data')
            await writer.write(b' result')
            await writer.write_eof()

    req = ClientRequest(
        'POST', URL('http://python.org/'), data=gen(),
        expect100=True, loop=loop)
    assert req.chunked

    async def coro():
        await asyncio.sleep(0.0001, loop=loop)
        req._continue.set_result(1)

    loop.create_task(coro())

    resp = await req.send(conn)
    await req._writer
    assert buf.split(b'\r\n\r\n', 1)[1] == \
        b'b\r\nbinary data\r\n7\r\n result\r\n0\r\n\r\n'
    await req.close()
    resp.close()


async def test_data_continue(loop, buf, conn) -> None:
    req = ClientRequest(
        'POST', URL('http://python.org/'), data=b'data',
        expect100=True, loop=loop)

    async def coro():
        await asyncio.sleep(0.0001, loop=loop)
        req._continue.set_result(1)

    loop.create_task(coro())

    resp = await req.send(conn)

    await req._writer
    assert buf.split(b'\r\n\r\n', 1)[1] == b'data'
    await req.close()
    resp.close()


async def test_close(loop, buf, conn) -> None:
    @async_generator
    async def gen():
        await asyncio.sleep(0.00001)
        await yield_(b'result')

    req = ClientRequest(
        'POST', URL('http://python.org/'), data=gen(), loop=loop)
    resp = await req.send(conn)
    await req.close()
    assert buf.split(b'\r\n\r\n', 1)[1] == b'6\r\nresult\r\n0\r\n\r\n'
    await req.close()
    resp.close()


async def test_close_deprecated(loop, buf, conn) -> None:
    with pytest.warns(DeprecationWarning):
        @aiohttp.streamer
        async def gen(writer):
            await asyncio.sleep(0.00001, loop=loop)
            await writer.write(b'result')

    req = ClientRequest(
        'POST', URL('http://python.org/'), data=gen(), loop=loop)
    resp = await req.send(conn)
    await req.close()
    assert buf.split(b'\r\n\r\n', 1)[1] == b'6\r\nresult\r\n0\r\n\r\n'
    await req.close()
    resp.close()


async def test_custom_response_class(loop, conn) -> None:
    class CustomResponse(ClientResponse):
        def read(self, decode=False):
            return 'customized!'

    req = ClientRequest(
        'GET', URL('http://python.org/'), response_class=CustomResponse,
        loop=loop)
    resp = await req.send(conn)
    assert 'customized!' == resp.read()
    await req.close()
    resp.close()


async def test_oserror_on_write_bytes(loop, conn) -> None:
    req = ClientRequest(
        'POST', URL('http://python.org/'), loop=loop)

    writer = mock.Mock()
    writer.write.side_effect = OSError

    await req.write_bytes(writer, conn)

    assert conn.protocol.set_exception.called
    exc = conn.protocol.set_exception.call_args[0][0]
    assert isinstance(exc, aiohttp.ClientOSError)


async def test_terminate(loop, conn) -> None:
    req = ClientRequest('get', URL('http://python.org'), loop=loop)
    resp = await req.send(conn)
    assert req._writer is not None
    writer = req._writer = mock.Mock()

    req.terminate()
    assert req._writer is None
    writer.cancel.assert_called_with()
    resp.close()


def test_terminate_with_closed_loop(loop, conn) -> None:
    req = resp = writer = None

    async def go():
        nonlocal req, resp, writer
        req = ClientRequest('get', URL('http://python.org'))
        resp = await req.send(conn)
        assert req._writer is not None
        writer = req._writer = mock.Mock()

        await asyncio.sleep(0.05)

    loop.run_until_complete(go())

    loop.close()
    req.terminate()
    assert req._writer is None
    assert not writer.cancel.called
    resp.close()


def test_terminate_without_writer(loop) -> None:
    req = ClientRequest('get', URL('http://python.org'), loop=loop)
    assert req._writer is None

    req.terminate()
    assert req._writer is None


async def test_custom_req_rep(loop) -> None:
    conn = None

    class CustomResponse(ClientResponse):

        async def start(self, connection, read_until_eof=False):
            nonlocal conn
            conn = connection
            self.status = 123
            self.reason = 'Test OK'
            self._headers = CIMultiDictProxy(CIMultiDict())
            self.cookies = SimpleCookie()
            return

    called = False

    class CustomRequest(ClientRequest):

        async def send(self, conn):
            resp = self.response_class(self.method,
                                       self.url,
                                       writer=self._writer,
                                       continue100=self._continue,
                                       timer=self._timer,
                                       request_info=self.request_info,
                                       traces=self._traces,
                                       loop=self.loop,
                                       session=self._session)
            self.response = resp
            nonlocal called
            called = True
            return resp

    async def create_connection(req, traces, timeout):
        assert isinstance(req, CustomRequest)
        return mock.Mock()
    connector = BaseConnector(loop=loop)
    connector._create_connection = create_connection

    session = aiohttp.ClientSession(
        request_class=CustomRequest,
        response_class=CustomResponse,
        connector=connector,
        loop=loop)

    resp = await session.request(
        'get', URL('http://example.com/path/to'))
    assert isinstance(resp, CustomResponse)
    assert called
    resp.close()
    await session.close()
    conn.close()


def test_verify_ssl_false_with_ssl_context(loop) -> None:
    with pytest.warns(DeprecationWarning):
        with pytest.raises(ValueError):
            _merge_ssl_params(None, verify_ssl=False,
                              ssl_context=mock.Mock(), fingerprint=None)


def test_bad_fingerprint(loop) -> None:
    with pytest.raises(ValueError):
        Fingerprint(b'invalid')


def test_insecure_fingerprint_md5(loop) -> None:
    with pytest.raises(ValueError):
        Fingerprint(hashlib.md5(b"foo").digest())


def test_insecure_fingerprint_sha1(loop) -> None:
    with pytest.raises(ValueError):
        Fingerprint(hashlib.sha1(b"foo").digest())