gnu: python-w3lib: Fix build.

* gnu/packages/python-web.scm (python-w3lib): Fix build.
  [source]: Add python-w3lib-fix-test-failure.patch.
  [arguments]: Use pytest in the 'check phase.
  [native-inputs]: Add python-pytest.
* gnu/packages/patches/python-w3lib-fix-test-failure.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/gnu/packages/patches/python-w3lib-fix-test-failure.patch b/gnu/packages/patches/python-w3lib-fix-test-failure.patch
new file mode 100644
index 0000000000..f38fc749df
--- /dev/null
+++ b/gnu/packages/patches/python-w3lib-fix-test-failure.patch
@@ -0,0 +1,60 @@
+From fae6cc40e112cd13697cb0e8d79976f32c72491d Mon Sep 17 00:00:00 2001
+From: Eugenio Lacuesta <eugenio.lacuesta@gmail.com>
+Date: Wed, 10 Mar 2021 12:31:05 -0300
+Subject: [PATCH] [CI] Mark single add_or_replace_parameter test as xfail
+
+---
+This patch is based on upstream commit
+fae6cc40e112cd13697cb0e8d79976f32c72491d which is part of
+https://github.com/scrapy/w3lib/pull/166.
+
+ .gitignore        |  3 ++-
+ tests/test_url.py | 25 ++++++++++++++-----------
+ 2 files changed, 16 insertions(+), 12 deletions(-)
+
+diff --git a/tests/test_url.py b/tests/test_url.py
+index 8b07c00..0f7458e 100644
+--- a/tests/test_url.py
++++ b/tests/test_url.py
+@@ -1,12 +1,14 @@
+-# -*- coding: utf-8 -*-
+ from __future__ import absolute_import
+ import os
+ import unittest
++
++import pytest
++from six.moves.urllib.parse import urlparse
++
+ from w3lib.url import (is_url, safe_url_string, safe_download_url,
+     url_query_parameter, add_or_replace_parameter, url_query_cleaner,
+     file_uri_to_path, parse_data_uri, path_to_file_uri, any_to_uri,
+     urljoin_rfc, canonicalize_url, parse_url, add_or_replace_parameters)
+-from six.moves.urllib.parse import urlparse
+ 
+ 
+ class UrlTests(unittest.TestCase):
+@@ -310,10 +311,6 @@ def test_add_or_replace_parameter(self):
+         self.assertEqual(add_or_replace_parameter(url, 'arg3', 'nv3'),
+                          'http://domain/test?arg1=v1&arg2=v2&arg3=nv3')
+ 
+-        url = 'http://domain/test?arg1=v1;arg2=v2'
+-        self.assertEqual(add_or_replace_parameter(url, 'arg1', 'v3'),
+-                         'http://domain/test?arg1=v3&arg2=v2')
+-
+         self.assertEqual(add_or_replace_parameter("http://domain/moreInfo.asp?prodID=", 'prodID', '20'),
+                          'http://domain/moreInfo.asp?prodID=20')
+         url = 'http://rmc-offers.co.uk/productlist.asp?BCat=2%2C60&CatID=60'
+@@ -338,6 +335,13 @@ def test_add_or_replace_parameter(self):
+         self.assertEqual(add_or_replace_parameter(url, 'arg1', 'v3'),
+                          'http://domain/test?arg1=v3&arg2=v2')
+ 
++    @pytest.mark.xfail(reason="https://github.com/scrapy/w3lib/issues/164")
++    def test_add_or_replace_parameter_fail(self):
++        self.assertEqual(
++            add_or_replace_parameter('http://domain/test?arg1=v1;arg2=v2', 'arg1', 'v3'),
++            'http://domain/test?arg1=v3&arg2=v2'
++        )
++
+     def test_add_or_replace_parameters(self):
+         url = 'http://domain/test'
+         self.assertEqual(add_or_replace_parameters(url, {'arg': 'v'}),