Avoid running coverage when it's unneeded.

Unfortunately running coverage means our tests need more than a minute longer
to run.

We still run it in the following scenarios:
    - Full 'tox' run
    - On Travis CI on Linux
    - On the buildbot on Archlinux

But not anymore in the following scenarios:
    - When running 'tox -e py35' (or py34)
    - On Travis CI on OS X
    - On AppVeyor
    - On the buildbot except on Archlinux

.travis.yml

@@ -12,7 +12,7 @@ env:
     - PATH=/home/travis/bin:/home/travis/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
   matrix:
     - TESTENV=py35
-    - TESTENV=py34
+    - TESTENV=py34-cov
     - TESTENV=unittests-nodisp
     - TESTENV=misc
     - TESTENV=vulture
@@ -38,14 +38,14 @@ script:
   - tox -e $TESTENV -- -v --cov-report term tests
 
 after_success:
-  - '[[ ($TESTENV == py34 || $TESTENV == py35) && $TRAVIS_OX == linux ]] && codecov -e TESTENV -X gcov'
+  - '[[ $TESTENV == *-cov ]] && codecov -e TESTENV -X gcov'
 
 matrix:
   exclude:
     - os: linux
       env: TESTENV=py35
     - os: osx
-      env: TESTENV=py34
+      env: TESTENV=py34-cov
     - os: osx
       env: TESTENV=unittests-nodisp
     - os: osx

scripts/dev/ci_install.py

@@ -40,11 +40,11 @@ except ImportError:
 
 TESTENV = os.environ['TESTENV']
 TRAVIS_OS = os.environ.get('TRAVIS_OS_NAME', None)
-INSTALL_PYQT = TESTENV in ('py34', 'py35', 'unittests-nodisp', 'vulture',
-                           'pylint')
+INSTALL_PYQT = TESTENV in ('py34', 'py35', 'py34-cov', 'py35-cov',
+                           'unittests-nodisp', 'vulture', 'pylint')
 XVFB = TRAVIS_OS == 'linux' and TESTENV == 'py34'
 pip_packages = ['tox']
-if TESTENV in ['py34', 'py35'] and TRAVIS_OS == 'linux':
+if TESTENV.endswith('-cov'):
     pip_packages.append('codecov')
 
 

tox.ini

@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py34,py35,misc,vulture,pep257,flake8,pylint,pyroma,check-manifest
+envlist = py34,py35-cov,misc,vulture,pep257,flake8,pylint,pyroma,check-manifest
 
 [testenv]
 # https://bitbucket.org/hpk42/tox/issue/246/ - only needed for Windows though
@@ -44,6 +44,25 @@ deps =
     wheel==0.26.0
     xvfbwrapper==0.2.7
     cherrypy==4.0.0
+commands =
+    {envpython} scripts/link_pyqt.py --tox {envdir}
+    {envpython} -m py.test --strict -rfEsw --faulthandler-timeout=70 --instafail {posargs:tests}
+
+[testenv:py35-cov]
+basepython = python3.5
+setenv = {[testenv]setenv}
+passenv = {[testenv]passenv}
+deps = {[testenv]deps}
+commands =
+    {envpython} scripts/link_pyqt.py --tox {envdir}
+    {envpython} -m py.test --strict -rfEsw --faulthandler-timeout=70 --instafail --cov --cov-report xml --cov-report=html --cov-report= {posargs:tests}
+    {envpython} scripts/dev/check_coverage.py {posargs}
+
+[testenv:py34-cov]
+basepython = python3.4
+setenv = {[testenv]setenv}
+passenv = {[testenv]passenv}
+deps = {[testenv]deps}
 commands =
     {envpython} scripts/link_pyqt.py --tox {envdir}
     {envpython} -m py.test --strict -rfEsw --faulthandler-timeout=70 --instafail --cov --cov-report xml --cov-report=html --cov-report= {posargs:tests}