Update test environment

 - Add python 3.6
 - Drop Python 3.4
 - Use tox on travis
 - Add chrome and gecko driver
 - Do not wait for chrome before quit

.travis.yml

@@ -1,32 +1,50 @@
 language: python
 sudo: false
+dist: trusty
+addons:
+ firefox: latest
+ apt:
+    sources:
+      - google-chrome
+    packages:
+      - google-chrome-stable
 cache:
   - pip
+  - apt
 python:
   - "2.7"
-  - "3.4"
   - "3.5"
+  - "3.6"
 env:
   global:
     - DISPLAY=:99.0
   matrix:
-    - DJANGO="Django<1.9,>=1.8"
-    - DJANGO="Django<1.10,>=1.9"
-    - DJANGO="-e git+https://github.com/django/django.git@master#egg=Django"
+    - TOXENV=qa
+    - DJANGO=18
+    - DJANGO=19
+    - DJANGO=110
+    - DJANGO=master
 matrix:
   fast_finish: true
   allow_failures:
-    - env: DJANGO="-e git+https://github.com/django/django.git@master#egg=Django"
+    - env: DJANGO=master
 install:
-  - pip install --upgrade pip
-  - pip install -r requirements-dev.txt
-  - pip install $DJANGO
+  - pip install --upgrade pip tox
   - pip install -U coveralls
   - sh -e /etc/init.d/xvfb start
+before_script:
+  - mkdir bin
+  - curl -O https://chromedriver.storage.googleapis.com/2.27/chromedriver_linux64.zip
+  - unzip chromedriver_linux64.zip -d bin
+  - curl -Lo geckodriver.tar.gz https://github.com/mozilla/geckodriver/releases/download/v0.11.1/geckodriver-v0.11.1-linux64.tar.gz
+  - tar xzf geckodriver.tar.gz -C bin
+  - PATH=$PATH:$PWD/bin
 script:
-  - isort --check-only --recursive --diff .
-  - flake8 --jobs=2 .
-  - pep257 s3file
-  - coverage run --source=s3file -m 'pytest'
+  - |
+    if [[ $TOXENV == qa ]]; then
+      tox -e qa
+    else
+      tox -e py$(echo $TRAVIS_PYTHON_VERSION | sed -e 's/\.//g')-dj$DJANGO
+    fi
 after_success:
   - coveralls

requirements-dev.txt

@@ -5,19 +5,17 @@
 #    pip-compile requirements-dev.in
 #
 -e .
+coverage==4.3
 django-appconf==1.0.2
 flake8==3.2.1
 isort==4.2.5
 mccabe==0.5.3             # via flake8
-pep257==0.7.0
+pydocstyle==1.1.1
 pep8-naming==0.4.1
 pep8==1.7.0               # via flake8
-pluggy==0.4.0             # via tox
-py==1.4.32                # via pytest, tox
+py==1.4.32                # via pytest
 pyflakes==1.3.0           # via flake8
 pytest-django==3.1.2
 pytest==3.0.5
 selenium==3.0.2
 six==1.10.0               # via django-appconf
-tox==2.5.0
-virtualenv==15.1.0        # via tox

setup.cfg

@@ -1,4 +1,4 @@
-[pytest]
+[tool:pytest]
 addopts = --tb=short -rxs
 DJANGO_SETTINGS_MODULE=tests.testapp.settings
 norecursedirs = env docs
@@ -10,8 +10,8 @@ statistics = true
 show-source = true
 exclude = */migrations/*,docs/*,env/*,.tox/*
 
-[pep257]
-add-ignore = D100,D102,D103,D104
+[pydocstyle]
+add-ignore = D100,D101,D102,D103,D104
 match-dir = (?!tests|env|\.).*
 
 [isort]

tests/conftest.py

@@ -3,32 +3,38 @@
 
 import os
 import tempfile
+from time import sleep
 
 import pytest
 from django.core.files.base import ContentFile
+from django.utils.encoding import force_text
 from selenium import webdriver
 from selenium.common.exceptions import WebDriverException
 
+
 browsers = {
-    'firefox': webdriver.Firefox,
+    'phantomjs': webdriver.PhantomJS,
     'chrome': webdriver.Chrome,
+    'firefox': webdriver.Firefox,
 }
 
 
-@pytest.fixture(scope='session',
-                params=browsers.keys())
+@pytest.yield_fixture(scope='session', params=sorted(browsers.keys()))
 def driver(request):
     if 'DISPLAY' not in os.environ:
         pytest.skip('Test requires display server (export DISPLAY)')
 
     try:
         b = browsers[request.param]()
     except WebDriverException as e:
-        pytest.skip(e)
+        pytest.skip(force_text(e))
     else:
         b.set_window_size(1200, 800)
-        request.addfinalizer(lambda *args: b.quit())
-        return b
+        yield b
+        if isinstance(b, webdriver.Chrome):
+            # chrome needs a couple of seconds before it can be quit
+            sleep(5)
+        b.quit()
 
 
 @pytest.fixture

tox.ini

@@ -1,16 +1,17 @@
 [tox]
-envlist = py{27,34,35}-django{18,19,master},qa
+envlist = py{27,35,36}-dj{18,19,110,master},qa
 [testenv]
 setenv=
     DISPLAY=:99.0
     PYTHONPATH = {toxinidir}
 deps=
     -rrequirements-dev.txt
-    django18: Django>=1.8,<1.9
-    django19: Django>=1.9,<1.10
-    djangomaster: -egit+https://github.com/django/django.git@master#egg=Django
+    dj18: https://github.com/django/django/archive/stable/1.8.x.tar.gz#egg=django
+    dj19: https://github.com/django/django/archive/stable/1.9.x.tar.gz#egg=django
+    dj110: https://github.com/django/django/archive/stable/1.10.x.tar.gz#egg=django
+    djmaster: https://github.com/django/django/archive/master.tar.gz#egg=django
 commands=
-    py.test \
+    coverage run --source=s3file -m 'pytest' \
         --basetemp={envtmpdir} \
         --ignore=.tox \
         {posargs}
@@ -22,4 +23,4 @@ deps=
 commands=
     isort --check-only --recursive --diff {posargs}
     flake8 --jobs=2 {posargs}
-    pep257 --verbose --explain --source --count {posargs}
+    pydocstyle --verbose --explain --source --count {posargs}