import unittest
import re
import json
import xmlrpc.client
import warnings
from unittest import mock
from urllib.parse import parse_qs, unquote_to_bytes, urlparse

from scrapy.http import Request, FormRequest, XmlRpcRequest, JsonRequest, Headers, HtmlResponse
from scrapy.utils.python import to_bytes, to_unicode


class RequestTest(unittest.TestCase):

    request_class = Request
    default_method = 'GET'
    default_headers = {}
    default_meta = {}

    def test_init(self):
        # Request requires url in the __init__ method
        self.assertRaises(Exception, self.request_class)

        # url argument must be basestring
        self.assertRaises(TypeError, self.request_class, 123)
        r = self.request_class('http://www.example.com')

        r = self.request_class("http://www.example.com")
        assert isinstance(r.url, str)
        self.assertEqual(r.url, "http://www.example.com")
        self.assertEqual(r.method, self.default_method)

        assert isinstance(r.headers, Headers)
        self.assertEqual(r.headers, self.default_headers)
        self.assertEqual(r.meta, self.default_meta)

        meta = {"lala": "lolo"}
        headers = {b"caca": b"coco"}
        r = self.request_class("http://www.example.com", meta=meta, headers=headers, body="a body")

        assert r.meta is not meta
        self.assertEqual(r.meta, meta)
        assert r.headers is not headers
        self.assertEqual(r.headers[b"caca"], b"coco")

    def test_url_scheme(self):
        # This test passes by not raising any (ValueError) exception
        self.request_class('http://example.org')
        self.request_class('https://example.org')
        self.request_class('s3://example.org')
        self.request_class('ftp://example.org')
        self.request_class('about:config')
        self.request_class('data:,Hello%2C%20World!')

    def test_url_no_scheme(self):
        self.assertRaises(ValueError, self.request_class, 'foo')
        self.assertRaises(ValueError, self.request_class, '/foo/')
        self.assertRaises(ValueError, self.request_class, '/foo:bar')

    def test_headers(self):
        # Different ways of setting headers attribute
        url = 'http://www.scrapy.org'
        headers = {b'Accept': 'gzip', b'Custom-Header': 'nothing to tell you'}
        r = self.request_class(url=url, headers=headers)
        p = self.request_class(url=url, headers=r.headers)

        self.assertEqual(r.headers, p.headers)
        self.assertFalse(r.headers is headers)
        self.assertFalse(p.headers is r.headers)

        # headers must not be unicode
        h = Headers({'key1': 'val1', 'key2': 'val2'})
        h['newkey'] = 'newval'
        for k, v in h.items():
            self.assertIsInstance(k, bytes)
            for s in v:
                self.assertIsInstance(s, bytes)

    def test_eq(self):
        url = 'http://www.scrapy.org'
        r1 = self.request_class(url=url)
        r2 = self.request_class(url=url)
        self.assertNotEqual(r1, r2)

        set_ = set()
        set_.add(r1)
        set_.add(r2)
        self.assertEqual(len(set_), 2)

    def test_url(self):
        r = self.request_class(url="http://www.scrapy.org/path")
        self.assertEqual(r.url, "http://www.scrapy.org/path")

    def test_url_quoting(self):
        r = self.request_class(url="http://www.scrapy.org/blank%20space")
        self.assertEqual(r.url, "http://www.scrapy.org/blank%20space")
        r = self.request_class(url="http://www.scrapy.org/blank space")
        self.assertEqual(r.url, "http://www.scrapy.org/blank%20space")

    def test_url_encoding(self):
        r = self.request_class(url="http://www.scrapy.org/price/£")
        self.assertEqual(r.url, "http://www.scrapy.org/price/%C2%A3")

    def test_url_encoding_other(self):
        # encoding affects only query part of URI, not path
        # path part should always be UTF-8 encoded before percent-escaping
        r = self.request_class(url="http://www.scrapy.org/price/£", encoding="utf-8")
        self.assertEqual(r.url, "http://www.scrapy.org/price/%C2%A3")

        r = self.request_class(url="http://www.scrapy.org/price/£", encoding="latin1")
        self.assertEqual(r.url, "http://www.scrapy.org/price/%C2%A3")

    def test_url_encoding_query(self):
        r1 = self.request_class(url="http://www.scrapy.org/price/£?unit=µ")
        self.assertEqual(r1.url, "http://www.scrapy.org/price/%C2%A3?unit=%C2%B5")

        # should be same as above
        r2 = self.request_class(url="http://www.scrapy.org/price/£?unit=µ", encoding="utf-8")
        self.assertEqual(r2.url, "http://www.scrapy.org/price/%C2%A3?unit=%C2%B5")

    def test_url_encoding_query_latin1(self):
        # encoding is used for encoding query-string before percent-escaping;
        # path is still UTF-8 encoded before percent-escaping
        r3 = self.request_class(url="http://www.scrapy.org/price/µ?currency=£", encoding="latin1")
        self.assertEqual(r3.url, "http://www.scrapy.org/price/%C2%B5?currency=%A3")

    def test_url_encoding_nonutf8_untouched(self):
        # percent-escaping sequences that do not match valid UTF-8 sequences
        # should be kept untouched (just upper-cased perhaps)
        #
        # See https://tools.ietf.org/html/rfc3987#section-3.2
        #
        # "Conversions from URIs to IRIs MUST NOT use any character encoding
        # other than UTF-8 in steps 3 and 4, even if it might be possible to
        # guess from the context that another character encoding than UTF-8 was
        # used in the URI.  For example, the URI
        # "http://www.example.org/r%E9sum%E9.html" might with some guessing be
        # interpreted to contain two e-acute characters encoded as iso-8859-1.
        # It must not be converted to an IRI containing these e-acute
        # characters.  Otherwise, in the future the IRI will be mapped to
        # "http://www.example.org/r%C3%A9sum%C3%A9.html", which is a different
        # URI from "http://www.example.org/r%E9sum%E9.html".
        r1 = self.request_class(url="http://www.scrapy.org/price/%a3")
        self.assertEqual(r1.url, "http://www.scrapy.org/price/%a3")

        r2 = self.request_class(url="http://www.scrapy.org/r%C3%A9sum%C3%A9/%a3")
        self.assertEqual(r2.url, "http://www.scrapy.org/r%C3%A9sum%C3%A9/%a3")

        r3 = self.request_class(url="http://www.scrapy.org/résumé/%a3")
        self.assertEqual(r3.url, "http://www.scrapy.org/r%C3%A9sum%C3%A9/%a3")

        r4 = self.request_class(url="http://www.example.org/r%E9sum%E9.html")
        self.assertEqual(r4.url, "http://www.example.org/r%E9sum%E9.html")

    def test_body(self):
        r1 = self.request_class(url="http://www.example.com/")
        assert r1.body == b''

        r2 = self.request_class(url="http://www.example.com/", body=b"")
        assert isinstance(r2.body, bytes)
        self.assertEqual(r2.encoding, 'utf-8')  # default encoding

        r3 = self.request_class(url="http://www.example.com/", body="Price: \xa3100", encoding='utf-8')
        assert isinstance(r3.body, bytes)
        self.assertEqual(r3.body, b"Price: \xc2\xa3100")

        r4 = self.request_class(url="http://www.example.com/", body="Price: \xa3100", encoding='latin1')
        assert isinstance(r4.body, bytes)
        self.assertEqual(r4.body, b"Price: \xa3100")

    def test_ajax_url(self):
        # ascii url
        r = self.request_class(url="http://www.example.com/ajax.html#!key=value")
        self.assertEqual(r.url, "http://www.example.com/ajax.html?_escaped_fragment_=key%3Dvalue")
        # unicode url
        r = self.request_class(url="http://www.example.com/ajax.html#!key=value")
        self.assertEqual(r.url, "http://www.example.com/ajax.html?_escaped_fragment_=key%3Dvalue")

    def test_copy(self):
        """Test Request copy"""

        def somecallback():
            pass

        r1 = self.request_class("http://www.example.com", flags=['f1', 'f2'],
                                callback=somecallback, errback=somecallback)
        r1.meta['foo'] = 'bar'
        r1.cb_kwargs['key'] = 'value'
        r2 = r1.copy()

        # make sure copy does not propagate callbacks
        assert r1.callback is somecallback
        assert r1.errback is somecallback
        assert r2.callback is r1.callback
        assert r2.errback is r2.errback

        # make sure flags list is shallow copied
        assert r1.flags is not r2.flags, "flags must be a shallow copy, not identical"
        self.assertEqual(r1.flags, r2.flags)

        # make sure cb_kwargs dict is shallow copied
        assert r1.cb_kwargs is not r2.cb_kwargs, "cb_kwargs must be a shallow copy, not identical"
        self.assertEqual(r1.cb_kwargs, r2.cb_kwargs)

        # make sure meta dict is shallow copied
        assert r1.meta is not r2.meta, "meta must be a shallow copy, not identical"
        self.assertEqual(r1.meta, r2.meta)

        # make sure headers attribute is shallow copied
        assert r1.headers is not r2.headers, "headers must be a shallow copy, not identical"
        self.assertEqual(r1.headers, r2.headers)
        self.assertEqual(r1.encoding, r2.encoding)
        self.assertEqual(r1.dont_filter, r2.dont_filter)

        # Request.body can be identical since it's an immutable object (str)

    def test_copy_inherited_classes(self):
        """Test Request children copies preserve their class"""

        class CustomRequest(self.request_class):
            pass

        r1 = CustomRequest('http://www.example.com')
        r2 = r1.copy()

        assert type(r2) is CustomRequest

    def test_replace(self):
        """Test Request.replace() method"""
        r1 = self.request_class("http://www.example.com", method='GET')
        hdrs = Headers(r1.headers)
        hdrs[b'key'] = b'value'
        r2 = r1.replace(method="POST", body="New body", headers=hdrs)
        self.assertEqual(r1.url, r2.url)
        self.assertEqual((r1.method, r2.method), ("GET", "POST"))
        self.assertEqual((r1.body, r2.body), (b'', b"New body"))
        self.assertEqual((r1.headers, r2.headers), (self.default_headers, hdrs))

        # Empty attributes (which may fail if not compared properly)
        r3 = self.request_class("http://www.example.com", meta={'a': 1}, dont_filter=True)
        r4 = r3.replace(url="http://www.example.com/2", body=b'', meta={}, dont_filter=False)
        self.assertEqual(r4.url, "http://www.example.com/2")
        self.assertEqual(r4.body, b'')
        self.assertEqual(r4.meta, {})
        assert r4.dont_filter is False

    def test_method_always_str(self):
        r = self.request_class("http://www.example.com", method="POST")
        assert isinstance(r.method, str)

    def test_immutable_attributes(self):
        r = self.request_class("http://example.com")
        self.assertRaises(AttributeError, setattr, r, 'url', 'http://example2.com')
        self.assertRaises(AttributeError, setattr, r, 'body', 'xxx')

    def test_callback_and_errback(self):
        def a_function():
            pass

        r1 = self.request_class('http://example.com')
        self.assertIsNone(r1.callback)
        self.assertIsNone(r1.errback)

        r2 = self.request_class('http://example.com', callback=a_function)
        self.assertIs(r2.callback, a_function)
        self.assertIsNone(r2.errback)

        r3 = self.request_class('http://example.com', errback=a_function)
        self.assertIsNone(r3.callback)
        self.assertIs(r3.errback, a_function)

        r4 = self.request_class(
            url='http://example.com',
            callback=a_function,
            errback=a_function,
        )
        self.assertIs(r4.callback, a_function)
        self.assertIs(r4.errback, a_function)

    def test_callback_and_errback_type(self):
        with self.assertRaises(TypeError):
            self.request_class('http://example.com', callback='a_function')
        with self.assertRaises(TypeError):
            self.request_class('http://example.com', errback='a_function')
        with self.assertRaises(TypeError):
            self.request_class(
                url='http://example.com',
                callback='a_function',
                errback='a_function',
            )

    def test_from_curl(self):
        # Note: more curated tests regarding curl conversion are in
        # `test_utils_curl.py`
        curl_command = (
            "curl 'http://httpbin.org/post' -X POST -H 'Cookie: _gauges_unique"
            "_year=1; _gauges_unique=1; _gauges_unique_month=1; _gauges_unique"
            "_hour=1; _gauges_unique_day=1' -H 'Origin: http://httpbin.org' -H"
            " 'Accept-Encoding: gzip, deflate' -H 'Accept-Language: en-US,en;q"
            "=0.9,ru;q=0.8,es;q=0.7' -H 'Upgrade-Insecure-Requests: 1' -H 'Use"
            "r-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTM"
            "L, like Gecko) Ubuntu Chromium/62.0.3202.75 Chrome/62.0.3202.75 S"
            "afari/537.36' -H 'Content-Type: application /x-www-form-urlencode"
            "d' -H 'Accept: text/html,application/xhtml+xml,application/xml;q="
            "0.9,image/webp,image/apng,*/*;q=0.8' -H 'Cache-Control: max-age=0"
            "' -H 'Referer: http://httpbin.org/forms/post' -H 'Connection: kee"
            "p-alive' --data 'custname=John+Smith&custtel=500&custemail=jsmith"
            "%40example.org&size=small&topping=cheese&topping=onion&delivery=1"
            "2%3A15&comments=' --compressed"
        )
        r = self.request_class.from_curl(curl_command)
        self.assertEqual(r.method, "POST")
        self.assertEqual(r.url, "http://httpbin.org/post")
        self.assertEqual(r.body,
                         b"custname=John+Smith&custtel=500&custemail=jsmith%40"
                         b"example.org&size=small&topping=cheese&topping=onion"
                         b"&delivery=12%3A15&comments=")
        self.assertEqual(r.cookies, {
            '_gauges_unique_year': '1',
            '_gauges_unique': '1',
            '_gauges_unique_month': '1',
            '_gauges_unique_hour': '1',
            '_gauges_unique_day': '1'
        })
        self.assertEqual(r.headers, {
            b'Origin': [b'http://httpbin.org'],
            b'Accept-Encoding': [b'gzip, deflate'],
            b'Accept-Language': [b'en-US,en;q=0.9,ru;q=0.8,es;q=0.7'],
            b'Upgrade-Insecure-Requests': [b'1'],
            b'User-Agent': [b'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.'
                            b'36 (KHTML, like Gecko) Ubuntu Chromium/62.0.3202'
                            b'.75 Chrome/62.0.3202.75 Safari/537.36'],
            b'Content-Type': [b'application /x-www-form-urlencoded'],
            b'Accept': [b'text/html,application/xhtml+xml,application/xml;q=0.'
                        b'9,image/webp,image/apng,*/*;q=0.8'],
            b'Cache-Control': [b'max-age=0'],
            b'Referer': [b'http://httpbin.org/forms/post'],
            b'Connection': [b'keep-alive']})

    def test_from_curl_with_kwargs(self):
        r = self.request_class.from_curl(
            'curl -X PATCH "http://example.org"',
            method="POST",
            meta={'key': 'value'}
        )
        self.assertEqual(r.method, "POST")
        self.assertEqual(r.meta, {"key": "value"})

    def test_from_curl_ignore_unknown_options(self):
        # By default: it works and ignores the unknown options: --foo and -z
        with warnings.catch_warnings():  # avoid warning when executing tests
            warnings.simplefilter('ignore')
            r = self.request_class.from_curl(
                'curl -X DELETE "http://example.org" --foo -z',
            )
            self.assertEqual(r.method, "DELETE")

        # If `ignore_unknon_options` is set to `False` it raises an error with
        # the unknown options: --foo and -z
        self.assertRaises(
            ValueError,
            lambda: self.request_class.from_curl(
                'curl -X PATCH "http://example.org" --foo -z',
                ignore_unknown_options=False,
            ),
        )


class FormRequestTest(RequestTest):

    request_class = FormRequest

    def assertQueryEqual(self, first, second, msg=None):
        first = to_unicode(first).split("&")
        second = to_unicode(second).split("&")
        return self.assertEqual(sorted(first), sorted(second), msg)

    def test_empty_formdata(self):
        r1 = self.request_class("http://www.example.com", formdata={})
        self.assertEqual(r1.body, b'')

    def test_formdata_overrides_querystring(self):
        data = (('a', 'one'), ('a', 'two'), ('b', '2'))
        url = self.request_class('http://www.example.com/?a=0&b=1&c=3#fragment',
                                 method='GET', formdata=data).url.split('#')[0]
        fs = _qs(self.request_class(url, method='GET', formdata=data))
        self.assertEqual(set(fs[b'a']), {b'one', b'two'})
        self.assertEqual(fs[b'b'], [b'2'])
        self.assertIsNone(fs.get(b'c'))

        data = {'a': '1', 'b': '2'}
        fs = _qs(self.request_class('http://www.example.com/', method='GET', formdata=data))
        self.assertEqual(fs[b'a'], [b'1'])
        self.assertEqual(fs[b'b'], [b'2'])

    def test_default_encoding_bytes(self):
        # using default encoding (utf-8)
        data = {b'one': b'two', b'price': b'\xc2\xa3 100'}
        r2 = self.request_class("http://www.example.com", formdata=data)
        self.assertEqual(r2.method, 'POST')
        self.assertEqual(r2.encoding, 'utf-8')
        self.assertQueryEqual(r2.body, b'price=%C2%A3+100&one=two')
        self.assertEqual(r2.headers[b'Content-Type'], b'application/x-www-form-urlencoded')

    def test_default_encoding_textual_data(self):
        # using default encoding (utf-8)
        data = {'µ one': 'two', 'price': '£ 100'}
        r2 = self.request_class("http://www.example.com", formdata=data)
        self.assertEqual(r2.method, 'POST')
        self.assertEqual(r2.encoding, 'utf-8')
        self.assertQueryEqual(r2.body, b'price=%C2%A3+100&%C2%B5+one=two')
        self.assertEqual(r2.headers[b'Content-Type'], b'application/x-www-form-urlencoded')

    def test_default_encoding_mixed_data(self):
        # using default encoding (utf-8)
        data = {'\u00b5one': b'two', b'price\xc2\xa3': '\u00a3 100'}
        r2 = self.request_class("http://www.example.com", formdata=data)
        self.assertEqual(r2.method, 'POST')
        self.assertEqual(r2.encoding, 'utf-8')
        self.assertQueryEqual(r2.body, b'%C2%B5one=two&price%C2%A3=%C2%A3+100')
        self.assertEqual(r2.headers[b'Content-Type'], b'application/x-www-form-urlencoded')

    def test_custom_encoding_bytes(self):
        data = {b'\xb5 one': b'two', b'price': b'\xa3 100'}
        r2 = self.request_class("http://www.example.com", formdata=data, encoding='latin1')
        self.assertEqual(r2.method, 'POST')
        self.assertEqual(r2.encoding, 'latin1')
        self.assertQueryEqual(r2.body, b'price=%A3+100&%B5+one=two')
        self.assertEqual(r2.headers[b'Content-Type'], b'application/x-www-form-urlencoded')

    def test_custom_encoding_textual_data(self):
        data = {'price': '£ 100'}
        r3 = self.request_class("http://www.example.com", formdata=data, encoding='latin1')
        self.assertEqual(r3.encoding, 'latin1')
        self.assertEqual(r3.body, b'price=%A3+100')

    def test_multi_key_values(self):
        # using multiples values for a single key
        data = {'price': '\xa3 100', 'colours': ['red', 'blue', 'green']}
        r3 = self.request_class("http://www.example.com", formdata=data)
        self.assertQueryEqual(r3.body, b'colours=red&colours=blue&colours=green&price=%C2%A3+100')

    def test_from_response_post(self):
        response = _buildresponse(
            b"""<form action="post.php" method="POST">
            <input type="hidden" name="test" value="val1">
            <input type="hidden" name="test" value="val2">
            <input type="hidden" name="test2" value="xxx">
            </form>""",
            url="http://www.example.com/this/list.html")
        req = self.request_class.from_response(response, formdata={'one': ['two', 'three'], 'six': 'seven'})

        self.assertEqual(req.method, 'POST')
        self.assertEqual(req.headers[b'Content-type'], b'application/x-www-form-urlencoded')
        self.assertEqual(req.url, "http://www.example.com/this/post.php")
        fs = _qs(req)
        self.assertEqual(set(fs[b'test']), {b'val1', b'val2'})
        self.assertEqual(set(fs[b'one']), {b'two', b'three'})
        self.assertEqual(fs[b'test2'], [b'xxx'])
        self.assertEqual(fs[b'six'], [b'seven'])

    def test_from_response_post_nonascii_bytes_utf8(self):
        response = _buildresponse(
            b"""<form action="post.php" method="POST">
            <input type="hidden" name="test \xc2\xa3" value="val1">
            <input type="hidden" name="test \xc2\xa3" value="val2">
            <input type="hidden" name="test2" value="xxx \xc2\xb5">
            </form>""",
            url="http://www.example.com/this/list.html")
        req = self.request_class.from_response(response, formdata={'one': ['two', 'three'], 'six': 'seven'})

        self.assertEqual(req.method, 'POST')
        self.assertEqual(req.headers[b'Content-type'], b'application/x-www-form-urlencoded')
        self.assertEqual(req.url, "http://www.example.com/this/post.php")
        fs = _qs(req, to_unicode=True)
        self.assertEqual(set(fs['test £']), {'val1', 'val2'})
        self.assertEqual(set(fs['one']), {'two', 'three'})
        self.assertEqual(fs['test2'], ['xxx µ'])
        self.assertEqual(fs['six'], ['seven'])

    def test_from_response_post_nonascii_bytes_latin1(self):
        response = _buildresponse(
            b"""<form action="post.php" method="POST">
            <input type="hidden" name="test \xa3" value="val1">
            <input type="hidden" name="test \xa3" value="val2">
            <input type="hidden" name="test2" value="xxx \xb5">
            </form>""",
            url="http://www.example.com/this/list.html",
            encoding='latin1',
        )
        req = self.request_class.from_response(response, formdata={'one': ['two', 'three'], 'six': 'seven'})

        self.assertEqual(req.method, 'POST')
        self.assertEqual(req.headers[b'Content-type'], b'application/x-www-form-urlencoded')
        self.assertEqual(req.url, "http://www.example.com/this/post.php")
        fs = _qs(req, to_unicode=True, encoding='latin1')
        self.assertEqual(set(fs['test £']), {'val1', 'val2'})
        self.assertEqual(set(fs['one']), {'two', 'three'})
        self.assertEqual(fs['test2'], ['xxx µ'])
        self.assertEqual(fs['six'], ['seven'])

    def test_from_response_post_nonascii_unicode(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="test £" value="val1">
            <input type="hidden" name="test £" value="val2">
            <input type="hidden" name="test2" value="xxx µ">
            </form>""",
            url="http://www.example.com/this/list.html")
        req = self.request_class.from_response(response, formdata={'one': ['two', 'three'], 'six': 'seven'})

        self.assertEqual(req.method, 'POST')
        self.assertEqual(req.headers[b'Content-type'], b'application/x-www-form-urlencoded')
        self.assertEqual(req.url, "http://www.example.com/this/post.php")
        fs = _qs(req, to_unicode=True)
        self.assertEqual(set(fs['test £']), {'val1', 'val2'})
        self.assertEqual(set(fs['one']), {'two', 'three'})
        self.assertEqual(fs['test2'], ['xxx µ'])
        self.assertEqual(fs['six'], ['seven'])

    def test_from_response_duplicate_form_key(self):
        response = _buildresponse(
            '<form></form>',
            url='http://www.example.com')
        req = self.request_class.from_response(
            response=response,
            method='GET',
            formdata=(('foo', 'bar'), ('foo', 'baz')),
        )
        self.assertEqual(urlparse(req.url).hostname, 'www.example.com')
        self.assertEqual(urlparse(req.url).query, 'foo=bar&foo=baz')

    def test_from_response_override_duplicate_form_key(self):
        response = _buildresponse(
            """<form action="get.php" method="POST">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="3">
            </form>""")
        req = self.request_class.from_response(
            response,
            formdata=(('two', '2'), ('two', '4')))
        fs = _qs(req)
        self.assertEqual(fs[b'one'], [b'1'])
        self.assertEqual(fs[b'two'], [b'2', b'4'])

    def test_from_response_extra_headers(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="test" value="val1">
            <input type="hidden" name="test" value="val2">
            <input type="hidden" name="test2" value="xxx">
            </form>""")
        req = self.request_class.from_response(
            response=response,
            formdata={'one': ['two', 'three'], 'six': 'seven'},
            headers={"Accept-Encoding": "gzip,deflate"},
        )
        self.assertEqual(req.method, 'POST')
        self.assertEqual(req.headers['Content-type'], b'application/x-www-form-urlencoded')
        self.assertEqual(req.headers['Accept-Encoding'], b'gzip,deflate')

    def test_from_response_get(self):
        response = _buildresponse(
            """<form action="get.php" method="GET">
            <input type="hidden" name="test" value="val1">
            <input type="hidden" name="test" value="val2">
            <input type="hidden" name="test2" value="xxx">
            </form>""",
            url="http://www.example.com/this/list.html")
        r1 = self.request_class.from_response(response, formdata={'one': ['two', 'three'], 'six': 'seven'})
        self.assertEqual(r1.method, 'GET')
        self.assertEqual(urlparse(r1.url).hostname, "www.example.com")
        self.assertEqual(urlparse(r1.url).path, "/this/get.php")
        fs = _qs(r1)
        self.assertEqual(set(fs[b'test']), {b'val1', b'val2'})
        self.assertEqual(set(fs[b'one']), {b'two', b'three'})
        self.assertEqual(fs[b'test2'], [b'xxx'])
        self.assertEqual(fs[b'six'], [b'seven'])

    def test_from_response_override_params(self):
        response = _buildresponse(
            """<form action="get.php" method="POST">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="3">
            </form>""")
        req = self.request_class.from_response(response, formdata={'two': '2'})
        fs = _qs(req)
        self.assertEqual(fs[b'one'], [b'1'])
        self.assertEqual(fs[b'two'], [b'2'])

    def test_from_response_drop_params(self):
        response = _buildresponse(
            """<form action="get.php" method="POST">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="3">
            </form>""")
        req = self.request_class.from_response(response, formdata={'two': None})
        fs = _qs(req)
        self.assertEqual(fs[b'one'], [b'1'])
        self.assertNotIn(b'two', fs)

    def test_from_response_override_method(self):
        response = _buildresponse(
            '''<html><body>
            <form action="/app"></form>
            </body></html>''')
        request = FormRequest.from_response(response)
        self.assertEqual(request.method, 'GET')
        request = FormRequest.from_response(response, method='POST')
        self.assertEqual(request.method, 'POST')

    def test_from_response_override_url(self):
        response = _buildresponse(
            '''<html><body>
            <form action="/app"></form>
            </body></html>''')
        request = FormRequest.from_response(response)
        self.assertEqual(request.url, 'http://example.com/app')
        request = FormRequest.from_response(response, url='http://foo.bar/absolute')
        self.assertEqual(request.url, 'http://foo.bar/absolute')
        request = FormRequest.from_response(response, url='/relative')
        self.assertEqual(request.url, 'http://example.com/relative')

    def test_from_response_case_insensitive(self):
        response = _buildresponse(
            """<form action="get.php" method="GET">
            <input type="SuBmIt" name="clickable1" value="clicked1">
            <input type="iMaGe" name="i1" src="http://my.image.org/1.jpg">
            <input type="submit" name="clickable2" value="clicked2">
            </form>""")
        req = self.request_class.from_response(response)
        fs = _qs(req)
        self.assertEqual(fs[b'clickable1'], [b'clicked1'])
        self.assertFalse(b'i1' in fs, fs)  # xpath in _get_inputs()
        self.assertFalse(b'clickable2' in fs, fs)  # xpath in _get_clickable()

    def test_from_response_submit_first_clickable(self):
        response = _buildresponse(
            """<form action="get.php" method="GET">
            <input type="submit" name="clickable1" value="clicked1">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="3">
            <input type="submit" name="clickable2" value="clicked2">
            </form>""")
        req = self.request_class.from_response(response, formdata={'two': '2'})
        fs = _qs(req)
        self.assertEqual(fs[b'clickable1'], [b'clicked1'])
        self.assertFalse(b'clickable2' in fs, fs)
        self.assertEqual(fs[b'one'], [b'1'])
        self.assertEqual(fs[b'two'], [b'2'])

    def test_from_response_submit_not_first_clickable(self):
        response = _buildresponse(
            """<form action="get.php" method="GET">
            <input type="submit" name="clickable1" value="clicked1">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="3">
            <input type="submit" name="clickable2" value="clicked2">
            </form>""")
        req = self.request_class.from_response(
            response, formdata={'two': '2'}, clickdata={'name': 'clickable2'}
        )
        fs = _qs(req)
        self.assertEqual(fs[b'clickable2'], [b'clicked2'])
        self.assertFalse(b'clickable1' in fs, fs)
        self.assertEqual(fs[b'one'], [b'1'])
        self.assertEqual(fs[b'two'], [b'2'])

    def test_from_response_dont_submit_image_as_input(self):
        response = _buildresponse(
            """<form>
            <input type="hidden" name="i1" value="i1v">
            <input type="image" name="i2" src="http://my.image.org/1.jpg">
            <input type="submit" name="i3" value="i3v">
            </form>""")
        req = self.request_class.from_response(response, dont_click=True)
        fs = _qs(req)
        self.assertEqual(fs, {b'i1': [b'i1v']})

    def test_from_response_dont_submit_reset_as_input(self):
        response = _buildresponse(
            """<form>
            <input type="hidden" name="i1" value="i1v">
            <input type="text" name="i2" value="i2v">
            <input type="reset" name="resetme">
            <input type="submit" name="i3" value="i3v">
            </form>""")
        req = self.request_class.from_response(response, dont_click=True)
        fs = _qs(req)
        self.assertEqual(fs, {b'i1': [b'i1v'], b'i2': [b'i2v']})

    def test_from_response_clickdata_does_not_ignore_image(self):
        response = _buildresponse(
            """<form>
            <input type="text" name="i1" value="i1v">
            <input id="image" name="i2" type="image" value="i2v" alt="Login" src="http://my.image.org/1.jpg">
            </form>""")
        req = self.request_class.from_response(response)
        fs = _qs(req)
        self.assertEqual(fs, {b'i1': [b'i1v'], b'i2': [b'i2v']})

    def test_from_response_multiple_clickdata(self):
        response = _buildresponse(
            """<form action="get.php" method="GET">
            <input type="submit" name="clickable" value="clicked1">
            <input type="submit" name="clickable" value="clicked2">
            <input type="hidden" name="one" value="clicked1">
            <input type="hidden" name="two" value="clicked2">
            </form>""")
        req = self.request_class.from_response(
            response, clickdata={'name': 'clickable', 'value': 'clicked2'}
        )
        fs = _qs(req)
        self.assertEqual(fs[b'clickable'], [b'clicked2'])
        self.assertEqual(fs[b'one'], [b'clicked1'])
        self.assertEqual(fs[b'two'], [b'clicked2'])

    def test_from_response_unicode_clickdata(self):
        response = _buildresponse(
            """<form action="get.php" method="GET">
            <input type="submit" name="price in \u00a3" value="\u00a3 1000">
            <input type="submit" name="price in \u20ac" value="\u20ac 2000">
            <input type="hidden" name="poundsign" value="\u00a3">
            <input type="hidden" name="eurosign" value="\u20ac">
            </form>""")
        req = self.request_class.from_response(
            response, clickdata={'name': 'price in \u00a3'}
        )
        fs = _qs(req, to_unicode=True)
        self.assertTrue(fs['price in \u00a3'])

    def test_from_response_unicode_clickdata_latin1(self):
        response = _buildresponse(
            """<form action="get.php" method="GET">
            <input type="submit" name="price in \u00a3" value="\u00a3 1000">
            <input type="submit" name="price in \u00a5" value="\u00a5 2000">
            <input type="hidden" name="poundsign" value="\u00a3">
            <input type="hidden" name="yensign" value="\u00a5">
            </form>""",
            encoding='latin1')
        req = self.request_class.from_response(
            response, clickdata={'name': 'price in \u00a5'}
        )
        fs = _qs(req, to_unicode=True, encoding='latin1')
        self.assertTrue(fs['price in \u00a5'])

    def test_from_response_multiple_forms_clickdata(self):
        response = _buildresponse(
            """<form name="form1">
            <input type="submit" name="clickable" value="clicked1">
            <input type="hidden" name="field1" value="value1">
            </form>
            <form name="form2">
            <input type="submit" name="clickable" value="clicked2">
            <input type="hidden" name="field2" value="value2">
            </form>
            """)
        req = self.request_class.from_response(
            response, formname='form2', clickdata={'name': 'clickable'}
        )
        fs = _qs(req)
        self.assertEqual(fs[b'clickable'], [b'clicked2'])
        self.assertEqual(fs[b'field2'], [b'value2'])
        self.assertFalse(b'field1' in fs, fs)

    def test_from_response_override_clickable(self):
        response = _buildresponse('''<form><input type="submit" name="clickme" value="one"> </form>''')
        req = self.request_class.from_response(
            response, formdata={'clickme': 'two'}, clickdata={'name': 'clickme'}
        )
        fs = _qs(req)
        self.assertEqual(fs[b'clickme'], [b'two'])

    def test_from_response_dont_click(self):
        response = _buildresponse(
            """<form action="get.php" method="GET">
            <input type="submit" name="clickable1" value="clicked1">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="3">
            <input type="submit" name="clickable2" value="clicked2">
            </form>""")
        r1 = self.request_class.from_response(response, dont_click=True)
        fs = _qs(r1)
        self.assertFalse(b'clickable1' in fs, fs)
        self.assertFalse(b'clickable2' in fs, fs)

    def test_from_response_ambiguous_clickdata(self):
        response = _buildresponse(
            """
            <form action="get.php" method="GET">
            <input type="submit" name="clickable1" value="clicked1">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="3">
            <input type="submit" name="clickable2" value="clicked2">
            </form>""")
        self.assertRaises(ValueError, self.request_class.from_response,
                          response, clickdata={'type': 'submit'})

    def test_from_response_non_matching_clickdata(self):
        response = _buildresponse(
            """<form>
            <input type="submit" name="clickable" value="clicked">
            </form>""")
        self.assertRaises(ValueError, self.request_class.from_response,
                          response, clickdata={'nonexistent': 'notme'})

    def test_from_response_nr_index_clickdata(self):
        response = _buildresponse(
            """<form>
            <input type="submit" name="clickable1" value="clicked1">
            <input type="submit" name="clickable2" value="clicked2">
            </form>
            """)
        req = self.request_class.from_response(response, clickdata={'nr': 1})
        fs = _qs(req)
        self.assertIn(b'clickable2', fs)
        self.assertNotIn(b'clickable1', fs)

    def test_from_response_invalid_nr_index_clickdata(self):
        response = _buildresponse(
            """<form>
            <input type="submit" name="clickable" value="clicked">
            </form>
            """)
        self.assertRaises(ValueError, self.request_class.from_response,
                          response, clickdata={'nr': 1})

    def test_from_response_errors_noform(self):
        response = _buildresponse("""<html></html>""")
        self.assertRaises(ValueError, self.request_class.from_response, response)

    def test_from_response_invalid_html5(self):
        response = _buildresponse("""<!DOCTYPE html><body></html><form>"""
                                  """<input type="text" name="foo" value="xxx">"""
                                  """</form></body></html>""")
        req = self.request_class.from_response(response, formdata={'bar': 'buz'})
        fs = _qs(req)
        self.assertEqual(fs, {b'foo': [b'xxx'], b'bar': [b'buz']})

    def test_from_response_errors_formnumber(self):
        response = _buildresponse(
            """<form action="get.php" method="GET">
            <input type="hidden" name="test" value="val1">
            <input type="hidden" name="test" value="val2">
            <input type="hidden" name="test2" value="xxx">
            </form>""")
        self.assertRaises(IndexError, self.request_class.from_response, response, formnumber=1)

    def test_from_response_noformname(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="2">
            </form>""")
        r1 = self.request_class.from_response(response, formdata={'two': '3'})
        self.assertEqual(r1.method, 'POST')
        self.assertEqual(r1.headers['Content-type'], b'application/x-www-form-urlencoded')
        fs = _qs(r1)
        self.assertEqual(fs, {b'one': [b'1'], b'two': [b'3']})

    def test_from_response_formname_exists(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="2">
            </form>
            <form name="form2" action="post.php" method="POST">
            <input type="hidden" name="three" value="3">
            <input type="hidden" name="four" value="4">
            </form>""")
        r1 = self.request_class.from_response(response, formname="form2")
        self.assertEqual(r1.method, 'POST')
        fs = _qs(r1)
        self.assertEqual(fs, {b'four': [b'4'], b'three': [b'3']})

    def test_from_response_formname_notexist(self):
        response = _buildresponse(
            """<form name="form1" action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            </form>
            <form name="form2" action="post.php" method="POST">
            <input type="hidden" name="two" value="2">
            </form>""")
        r1 = self.request_class.from_response(response, formname="form3")
        self.assertEqual(r1.method, 'POST')
        fs = _qs(r1)
        self.assertEqual(fs, {b'one': [b'1']})

    def test_from_response_formname_errors_formnumber(self):
        response = _buildresponse(
            """<form name="form1" action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            </form>
            <form name="form2" action="post.php" method="POST">
            <input type="hidden" name="two" value="2">
            </form>""")
        self.assertRaises(IndexError, self.request_class.from_response,
                          response, formname="form3", formnumber=2)

    def test_from_response_formid_exists(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="2">
            </form>
            <form id="form2" action="post.php" method="POST">
            <input type="hidden" name="three" value="3">
            <input type="hidden" name="four" value="4">
            </form>""")
        r1 = self.request_class.from_response(response, formid="form2")
        self.assertEqual(r1.method, 'POST')
        fs = _qs(r1)
        self.assertEqual(fs, {b'four': [b'4'], b'three': [b'3']})

    def test_from_response_formname_notexists_fallback_formid(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="2">
            </form>
            <form id="form2" name="form2" action="post.php" method="POST">
            <input type="hidden" name="three" value="3">
            <input type="hidden" name="four" value="4">
            </form>""")
        r1 = self.request_class.from_response(response, formname="form3", formid="form2")
        self.assertEqual(r1.method, 'POST')
        fs = _qs(r1)
        self.assertEqual(fs, {b'four': [b'4'], b'three': [b'3']})

    def test_from_response_formid_notexist(self):
        response = _buildresponse(
            """<form id="form1" action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            </form>
            <form id="form2" action="post.php" method="POST">
            <input type="hidden" name="two" value="2">
            </form>""")
        r1 = self.request_class.from_response(response, formid="form3")
        self.assertEqual(r1.method, 'POST')
        fs = _qs(r1)
        self.assertEqual(fs, {b'one': [b'1']})

    def test_from_response_formid_errors_formnumber(self):
        response = _buildresponse(
            """<form id="form1" action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            </form>
            <form id="form2" name="form2" action="post.php" method="POST">
            <input type="hidden" name="two" value="2">
            </form>""")
        self.assertRaises(IndexError, self.request_class.from_response,
                          response, formid="form3", formnumber=2)

    def test_from_response_select(self):
        res = _buildresponse(
            '''<form>
            <select name="i1">
                <option value="i1v1">option 1</option>
                <option value="i1v2" selected>option 2</option>
            </select>
            <select name="i2">
                <option value="i2v1">option 1</option>
                <option value="i2v2">option 2</option>
            </select>
            <select>
                <option value="i3v1">option 1</option>
                <option value="i3v2">option 2</option>
            </select>
            <select name="i4" multiple>
                <option value="i4v1">option 1</option>
                <option value="i4v2" selected>option 2</option>
                <option value="i4v3" selected>option 3</option>
            </select>
            <select name="i5" multiple>
                <option value="i5v1">option 1</option>
                <option value="i5v2">option 2</option>
            </select>
            <select name="i6"></select>
            <select name="i7"/>
            </form>''')
        req = self.request_class.from_response(res)
        fs = _qs(req, to_unicode=True)
        self.assertEqual(fs, {'i1': ['i1v2'], 'i2': ['i2v1'], 'i4': ['i4v2', 'i4v3']})

    def test_from_response_radio(self):
        res = _buildresponse(
            '''<form>
            <input type="radio" name="i1" value="i1v1">
            <input type="radio" name="i1" value="iv2" checked>
            <input type="radio" name="i2" checked>
            <input type="radio" name="i2">
            <input type="radio" name="i3" value="i3v1">
            <input type="radio" name="i3">
            <input type="radio" value="i4v1">
            <input type="radio">
            </form>''')
        req = self.request_class.from_response(res)
        fs = _qs(req)
        self.assertEqual(fs, {b'i1': [b'iv2'], b'i2': [b'on']})

    def test_from_response_checkbox(self):
        res = _buildresponse(
            '''<form>
            <input type="checkbox" name="i1" value="i1v1">
            <input type="checkbox" name="i1" value="iv2" checked>
            <input type="checkbox" name="i2" checked>
            <input type="checkbox" name="i2">
            <input type="checkbox" name="i3" value="i3v1">
            <input type="checkbox" name="i3">
            <input type="checkbox" value="i4v1">
            <input type="checkbox">
            </form>''')
        req = self.request_class.from_response(res)
        fs = _qs(req)
        self.assertEqual(fs, {b'i1': [b'iv2'], b'i2': [b'on']})

    def test_from_response_input_text(self):
        res = _buildresponse(
            '''<form>
            <input type="text" name="i1" value="i1v1">
            <input type="text" name="i2">
            <input type="text" value="i3v1">
            <input type="text">
            <input name="i4" value="i4v1">
            </form>''')
        req = self.request_class.from_response(res)
        fs = _qs(req)
        self.assertEqual(fs, {b'i1': [b'i1v1'], b'i2': [b''], b'i4': [b'i4v1']})

    def test_from_response_input_hidden(self):
        res = _buildresponse(
            '''<form>
            <input type="hidden" name="i1" value="i1v1">
            <input type="hidden" name="i2">
            <input type="hidden" value="i3v1">
            <input type="hidden">
            </form>''')
        req = self.request_class.from_response(res)
        fs = _qs(req)
        self.assertEqual(fs, {b'i1': [b'i1v1'], b'i2': [b'']})

    def test_from_response_input_textarea(self):
        res = _buildresponse(
            '''<form>
            <textarea name="i1">i1v</textarea>
            <textarea name="i2"></textarea>
            <textarea name="i3"/>
            <textarea>i4v</textarea>
            </form>''')
        req = self.request_class.from_response(res)
        fs = _qs(req)
        self.assertEqual(fs, {b'i1': [b'i1v'], b'i2': [b''], b'i3': [b'']})

    def test_from_response_descendants(self):
        res = _buildresponse(
            '''<form>
            <div>
              <fieldset>
                <input type="text" name="i1">
                <select name="i2">
                    <option value="v1" selected>
                </select>
              </fieldset>
              <input type="radio" name="i3" value="i3v2" checked>
              <input type="checkbox" name="i4" value="i4v2" checked>
              <textarea name="i5"></textarea>
              <input type="hidden" name="h1" value="h1v">
              </div>
            <input type="hidden" name="h2" value="h2v">
            </form>''')
        req = self.request_class.from_response(res)
        fs = _qs(req)
        self.assertEqual(set(fs), {b'h2', b'i2', b'i1', b'i3', b'h1', b'i5', b'i4'})

    def test_from_response_xpath(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="2">
            </form>
            <form action="post2.php" method="POST">
            <input type="hidden" name="three" value="3">
            <input type="hidden" name="four" value="4">
            </form>""")
        r1 = self.request_class.from_response(response, formxpath="//form[@action='post.php']")
        fs = _qs(r1)
        self.assertEqual(fs[b'one'], [b'1'])

        r1 = self.request_class.from_response(response, formxpath="//form/input[@name='four']")
        fs = _qs(r1)
        self.assertEqual(fs[b'three'], [b'3'])

        self.assertRaises(ValueError, self.request_class.from_response,
                          response, formxpath="//form/input[@name='abc']")

    def test_from_response_unicode_xpath(self):
        response = _buildresponse(b'<form name="\xd1\x8a"></form>')
        r = self.request_class.from_response(response, formxpath="//form[@name='\u044a']")
        fs = _qs(r)
        self.assertEqual(fs, {})

        xpath = "//form[@name='\u03b1']"
        self.assertRaisesRegex(ValueError, re.escape(xpath),
                               self.request_class.from_response,
                               response, formxpath=xpath)

    def test_from_response_button_submit(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="test1" value="val1">
            <input type="hidden" name="test2" value="val2">
            <button type="submit" name="button1" value="submit1">Submit</button>
            </form>""",
            url="http://www.example.com/this/list.html")
        req = self.request_class.from_response(response)
        self.assertEqual(req.method, 'POST')
        self.assertEqual(req.headers['Content-type'], b'application/x-www-form-urlencoded')
        self.assertEqual(req.url, "http://www.example.com/this/post.php")
        fs = _qs(req)
        self.assertEqual(fs[b'test1'], [b'val1'])
        self.assertEqual(fs[b'test2'], [b'val2'])
        self.assertEqual(fs[b'button1'], [b'submit1'])

    def test_from_response_button_notype(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="test1" value="val1">
            <input type="hidden" name="test2" value="val2">
            <button name="button1" value="submit1">Submit</button>
            </form>""",
            url="http://www.example.com/this/list.html")
        req = self.request_class.from_response(response)
        self.assertEqual(req.method, 'POST')
        self.assertEqual(req.headers['Content-type'], b'application/x-www-form-urlencoded')
        self.assertEqual(req.url, "http://www.example.com/this/post.php")
        fs = _qs(req)
        self.assertEqual(fs[b'test1'], [b'val1'])
        self.assertEqual(fs[b'test2'], [b'val2'])
        self.assertEqual(fs[b'button1'], [b'submit1'])

    def test_from_response_submit_novalue(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="test1" value="val1">
            <input type="hidden" name="test2" value="val2">
            <input type="submit" name="button1">Submit</button>
            </form>""",
            url="http://www.example.com/this/list.html")
        req = self.request_class.from_response(response)
        self.assertEqual(req.method, 'POST')
        self.assertEqual(req.headers['Content-type'], b'application/x-www-form-urlencoded')
        self.assertEqual(req.url, "http://www.example.com/this/post.php")
        fs = _qs(req)
        self.assertEqual(fs[b'test1'], [b'val1'])
        self.assertEqual(fs[b'test2'], [b'val2'])
        self.assertEqual(fs[b'button1'], [b''])

    def test_from_response_button_novalue(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="test1" value="val1">
            <input type="hidden" name="test2" value="val2">
            <button type="submit" name="button1">Submit</button>
            </form>""",
            url="http://www.example.com/this/list.html")
        req = self.request_class.from_response(response)
        self.assertEqual(req.method, 'POST')
        self.assertEqual(req.headers['Content-type'], b'application/x-www-form-urlencoded')
        self.assertEqual(req.url, "http://www.example.com/this/post.php")
        fs = _qs(req)
        self.assertEqual(fs[b'test1'], [b'val1'])
        self.assertEqual(fs[b'test2'], [b'val2'])
        self.assertEqual(fs[b'button1'], [b''])

    def test_html_base_form_action(self):
        response = _buildresponse(
            """
            <html>
                <head>
                    <base href=" http://b.com/">
                </head>
                <body>
                    <form action="test_form">
                    </form>
                </body>
            </html>
            """,
            url='http://a.com/'
        )
        req = self.request_class.from_response(response)
        self.assertEqual(req.url, 'http://b.com/test_form')

    def test_spaces_in_action(self):
        resp = _buildresponse('<body><form action=" path\n"></form></body>')
        req = self.request_class.from_response(resp)
        self.assertEqual(req.url, 'http://example.com/path')

    def test_from_response_css(self):
        response = _buildresponse(
            """<form action="post.php" method="POST">
            <input type="hidden" name="one" value="1">
            <input type="hidden" name="two" value="2">
            </form>
            <form action="post2.php" method="POST">
            <input type="hidden" name="three" value="3">
            <input type="hidden" name="four" value="4">
            </form>""")
        r1 = self.request_class.from_response(response, formcss="form[action='post.php']")
        fs = _qs(r1)
        self.assertEqual(fs[b'one'], [b'1'])

        r1 = self.request_class.from_response(response, formcss="input[name='four']")
        fs = _qs(r1)
        self.assertEqual(fs[b'three'], [b'3'])

        self.assertRaises(ValueError, self.request_class.from_response,
                          response, formcss="input[name='abc']")

    def test_from_response_valid_form_methods(self):
        form_methods = [[method, method] for method in self.request_class.valid_form_methods]
        form_methods.append(['UNKNOWN', 'GET'])

        for method, expected in form_methods:
            response = _buildresponse(
                f'<form action="post.php" method="{method}">'
                '<input type="hidden" name="one" value="1">'
                '</form>'
            )
            r = self.request_class.from_response(response)
            self.assertEqual(r.method, expected)


def _buildresponse(body, **kwargs):
    kwargs.setdefault('body', body)
    kwargs.setdefault('url', 'http://example.com')
    kwargs.setdefault('encoding', 'utf-8')
    return HtmlResponse(**kwargs)


def _qs(req, encoding='utf-8', to_unicode=False):
    if req.method == 'POST':
        qs = req.body
    else:
        qs = req.url.partition('?')[2]
    uqs = unquote_to_bytes(qs)
    if to_unicode:
        uqs = uqs.decode(encoding)
    return parse_qs(uqs, True)


class XmlRpcRequestTest(RequestTest):

    request_class = XmlRpcRequest
    default_method = 'POST'
    default_headers = {b'Content-Type': [b'text/xml']}

    def _test_request(self, **kwargs):
        r = self.request_class('http://scrapytest.org/rpc2', **kwargs)
        self.assertEqual(r.headers[b'Content-Type'], b'text/xml')
        self.assertEqual(r.body,
                         to_bytes(xmlrpc.client.dumps(**kwargs),
                                  encoding=kwargs.get('encoding', 'utf-8')))
        self.assertEqual(r.method, 'POST')
        self.assertEqual(r.encoding, kwargs.get('encoding', 'utf-8'))
        self.assertTrue(r.dont_filter, True)

    def test_xmlrpc_dumps(self):
        self._test_request(params=('value',))
        self._test_request(params=('username', 'password'), methodname='login')
        self._test_request(params=('response', ), methodresponse='login')
        self._test_request(params=('pas£',), encoding='utf-8')
        self._test_request(params=(None,), allow_none=1)
        self.assertRaises(TypeError, self._test_request)
        self.assertRaises(TypeError, self._test_request, params=(None,))

    def test_latin1(self):
        self._test_request(params=('pas£',), encoding='latin1')


class JsonRequestTest(RequestTest):
    request_class = JsonRequest
    default_method = 'GET'
    default_headers = {
        b'Content-Type': [b'application/json'],
        b'Accept': [b'application/json, text/javascript, */*; q=0.01'],
    }

    def setUp(self):
        warnings.simplefilter("always")
        super().setUp()

    def test_data(self):
        r1 = self.request_class(url="http://www.example.com/")
        self.assertEqual(r1.body, b'')

        body = b'body'
        r2 = self.request_class(url="http://www.example.com/", body=body)
        self.assertEqual(r2.body, body)

        data = {
            'name': 'value',
        }
        r3 = self.request_class(url="http://www.example.com/", data=data)
        self.assertEqual(r3.body, to_bytes(json.dumps(data)))

        # empty data
        r4 = self.request_class(url="http://www.example.com/", data=[])
        self.assertEqual(r4.body, to_bytes(json.dumps([])))

    def test_data_method(self):
        # data is not passed
        r1 = self.request_class(url="http://www.example.com/")
        self.assertEqual(r1.method, 'GET')

        body = b'body'
        r2 = self.request_class(url="http://www.example.com/", body=body)
        self.assertEqual(r2.method, 'GET')

        data = {
            'name': 'value',
        }
        r3 = self.request_class(url="http://www.example.com/", data=data)
        self.assertEqual(r3.method, 'POST')

        # method passed explicitly
        r4 = self.request_class(url="http://www.example.com/", data=data, method='GET')
        self.assertEqual(r4.method, 'GET')

        r5 = self.request_class(url="http://www.example.com/", data=[])
        self.assertEqual(r5.method, 'POST')

    def test_body_data(self):
        """ passing both body and data should result a warning """
        body = b'body'
        data = {
            'name': 'value',
        }
        with warnings.catch_warnings(record=True) as _warnings:
            r5 = self.request_class(url="http://www.example.com/", body=body, data=data)
            self.assertEqual(r5.body, body)
            self.assertEqual(r5.method, 'GET')
            self.assertEqual(len(_warnings), 1)
            self.assertIn('data will be ignored', str(_warnings[0].message))

    def test_empty_body_data(self):
        """ passing any body value and data should result a warning """
        data = {
            'name': 'value',
        }
        with warnings.catch_warnings(record=True) as _warnings:
            r6 = self.request_class(url="http://www.example.com/", body=b'', data=data)
            self.assertEqual(r6.body, b'')
            self.assertEqual(r6.method, 'GET')
            self.assertEqual(len(_warnings), 1)
            self.assertIn('data will be ignored', str(_warnings[0].message))

    def test_body_none_data(self):
        data = {
            'name': 'value',
        }
        with warnings.catch_warnings(record=True) as _warnings:
            r7 = self.request_class(url="http://www.example.com/", body=None, data=data)
            self.assertEqual(r7.body, to_bytes(json.dumps(data)))
            self.assertEqual(r7.method, 'POST')
            self.assertEqual(len(_warnings), 0)

    def test_body_data_none(self):
        with warnings.catch_warnings(record=True) as _warnings:
            r8 = self.request_class(url="http://www.example.com/", body=None, data=None)
            self.assertEqual(r8.method, 'GET')
            self.assertEqual(len(_warnings), 0)

    def test_dumps_sort_keys(self):
        """ Test that sort_keys=True is passed to json.dumps by default """
        data = {
            'name': 'value',
        }
        with mock.patch('json.dumps', return_value=b'') as mock_dumps:
            self.request_class(url="http://www.example.com/", data=data)
            kwargs = mock_dumps.call_args[1]
            self.assertEqual(kwargs['sort_keys'], True)

    def test_dumps_kwargs(self):
        """ Test that dumps_kwargs are passed to json.dumps """
        data = {
            'name': 'value',
        }
        dumps_kwargs = {
            'ensure_ascii': True,
            'allow_nan': True,
        }
        with mock.patch('json.dumps', return_value=b'') as mock_dumps:
            self.request_class(url="http://www.example.com/", data=data, dumps_kwargs=dumps_kwargs)
            kwargs = mock_dumps.call_args[1]
            self.assertEqual(kwargs['ensure_ascii'], True)
            self.assertEqual(kwargs['allow_nan'], True)

    def test_replace_data(self):
        data1 = {
            'name1': 'value1',
        }
        data2 = {
            'name2': 'value2',
        }
        r1 = self.request_class(url="http://www.example.com/", data=data1)
        r2 = r1.replace(data=data2)
        self.assertEqual(r2.body, to_bytes(json.dumps(data2)))

    def test_replace_sort_keys(self):
        """ Test that replace provides sort_keys=True to json.dumps """
        data1 = {
            'name1': 'value1',
        }
        data2 = {
            'name2': 'value2',
        }
        r1 = self.request_class(url="http://www.example.com/", data=data1)
        with mock.patch('json.dumps', return_value=b'') as mock_dumps:
            r1.replace(data=data2)
            kwargs = mock_dumps.call_args[1]
            self.assertEqual(kwargs['sort_keys'], True)

    def test_replace_dumps_kwargs(self):
        """ Test that dumps_kwargs are provided to json.dumps when replace is called """
        data1 = {
            'name1': 'value1',
        }
        data2 = {
            'name2': 'value2',
        }
        dumps_kwargs = {
            'ensure_ascii': True,
            'allow_nan': True,
        }
        r1 = self.request_class(url="http://www.example.com/", data=data1, dumps_kwargs=dumps_kwargs)
        with mock.patch('json.dumps', return_value=b'') as mock_dumps:
            r1.replace(data=data2)
            kwargs = mock_dumps.call_args[1]
            self.assertEqual(kwargs['ensure_ascii'], True)
            self.assertEqual(kwargs['allow_nan'], True)

    def tearDown(self):
        warnings.resetwarnings()
        super().tearDown()


if __name__ == "__main__":
    unittest.main()
