Prevent creation of user dirs on several tests.

Use the config_tempdir and data_tempdir fixtures for several tests that
were creation ~/.config/qute_test or ~/.local/share/qute_test.

tests/unit/browser/webkit/test_cookies.py

@@ -24,6 +24,8 @@ import pytest
 from qutebrowser.browser.webkit import cookies
 from qutebrowser.misc import lineparser
 
+pytestmark = pytest.mark.usefixtures('data_tmpdir')
+
 CONFIG_ALL_COOKIES = {'content': {'cookies-accept': 'all'}}
 CONFIG_NEVER_COOKIES = {'content': {'cookies-accept': 'never'}}
 CONFIG_COOKIES_ENABLED = {'content': {'cookies-store': True}}

tests/unit/config/test_config.py

@@ -35,6 +35,8 @@ from qutebrowser.config.parsers import keyconf
 from qutebrowser.commands import runners
 from qutebrowser.utils import objreg, standarddir
 
+pytestmark = pytest.mark.usefixtures('config_tmpdir')
+
 
 class TestConfigParser:
 

tests/unit/config/test_configtypes.py

@@ -33,6 +33,8 @@ from PyQt5.QtNetwork import QNetworkProxy
 from qutebrowser.config import configtypes, configexc
 from qutebrowser.utils import debug, utils
 
+pytestmark = pytest.mark.usefixtures('config_tmpdir')
+
 
 class Font(QFont):
 

tests/unit/config/test_configtypes_hypothesis.py

@@ -42,7 +42,7 @@ def gen_classes():
             yield member
 
 
-@pytest.mark.usefixtures('qapp')
+@pytest.mark.usefixtures('qapp', 'config_tmpdir')
 @pytest.mark.parametrize('klass', gen_classes())
 @hypothesis.given(strategies.text())
 @hypothesis.example('\x00')