Add a smoke-frozen testenv.

See #770.

.appveyor.yml

@@ -11,6 +11,7 @@ install:
 
 test_script:
   - C:\Python34\Scripts\tox -e smoke
+  - C:\Python34\Scripts\tox -e smoke-frozen
   - C:\Python34\Scripts\tox -e unittests
   - C:\Python34\Scripts\tox -e pyflakes
   - C:\Python34\Scripts\tox -e pylint

tox.ini

@@ -146,6 +146,18 @@ commands =
     {envpython} scripts/link_pyqt.py --tox {envdir}
     {envpython} -m qutebrowser --no-err-windows --nowindow --temp-basedir about:blank ":later 500 quit"
 
+[testenv:smoke-frozen]
+setenv = {[testenv:smoke]setenv}
+passenv = {[testenv:smoke]passenv}
+skip_install = true
+deps =
+    {[testenv:smoke]deps}
+    cx_Freeze==4.3.4
+commands =
+    {envpython} scripts/link_pyqt.py --tox {envdir}
+    {envpython} scripts/freeze.py build_exe -b {envdir}/build
+    {envdir}/build/qutebrowser --no-err-windows --nowindow --temp-basedir about:blank ":later 500 quit"
+
 [pytest]
 norecursedirs = .tox .venv
 markers =