Add hypothesis tests for configtypes.

See #830.

.gitignore

@@ -25,3 +25,4 @@ __pycache__
 /testresults.html
 /.cache
 /.testmondata
+/.hypothesis

tests/config/test_configtypes_hypothesis.py

@@ -0,0 +1,50 @@
+# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
+# Copyright 2015 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
+
+# This file is part of qutebrowser.
+#
+# qutebrowser is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# qutebrowser is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Hypothesis tests for qutebrowser.config.configtypes."""
+
+import inspect
+import functools
+
+import pytest
+import hypothesis
+from hypothesis import strategies
+
+from qutebrowser.config import configtypes, configexc
+
+
+def gen_classes():
+    for name, member in inspect.getmembers(configtypes, inspect.isclass):
+        if member is configtypes.BaseType:
+            pass
+        elif member is configtypes.MappingType:
+            pass
+        elif member is configtypes.FormatString:
+            yield functools.partial(member, fields=['a', 'b'])
+        elif issubclass(member, configtypes.BaseType):
+            yield member
+
+
+@pytest.mark.parametrize('klass', gen_classes())
+@hypothesis.given(strategies.text())
+@hypothesis.example('\x00')
+def test_configtypes_hypothesis(klass, s):
+    try:
+        klass().validate(s)
+    except configexc.ValidationError:
+        pass

tox.ini

@@ -27,6 +27,8 @@ deps =
     pytest-qt==1.5.0
     pytest-mock==0.7.0
     pytest-html==1.3.1
+    hypothesis==1.8.4
+    hypothesis-pytest==0.13.0
 commands =
     {envpython} scripts/link_pyqt.py --tox {envdir}
     {envpython} -m py.test --strict -rfEsw {posargs:tests}