Updated Travis CI configuration to run multiple tox environments (for…

… yajl2, and yajl2-cffi), instead of using individual matrix builds

.travis.yml

@@ -13,20 +13,15 @@ python:
   - 3.5
   - nightly
 
-env:
-  - BACKEND=python
-  - BACKEND=yajl2
-  - BACKEND=yajl2-cffi
-
 before_install:
   - sudo apt-get -qq update
-  - if [[ $BACKEND == yajl2* ]]; then sudo apt-get install -y libyajl2 libyajl-dev; fi
+  - if [[ $TRAVIS_PYTHON_VERSION == '2'* ]]; then sudo apt-get install -y libyajl2 libyajl-dev; fi
 install:
   - travis_retry pip install --upgrade coveralls setuptools tox-travis wheel
   - if [[ $TRAVIS_PYTHON_VERSION != 'pypy'* ]]; then travis_retry pip install pyOpenSSL>=16.2.0; fi
 script:
   - export YAJL2_VERSION=">=2.0.0, <2.0.5"
-  - if [[ $TRAVIS_PYTHON_VERSION == '2'* ]] || [[ $BACKEND == 'python' ]]; then tox; fi
+  - tox
   - if [[ $TRAVIS_PYTHON_VERSION != 'pypy3'* ]]; then
       python setup.py bdist_wheel sdist;
     else

tox.ini

@@ -1,13 +1,18 @@
 [tox]
-envlist = clean,py{26,27,33,34,35,36,py}-ij{python,yajl,yajl2,yajl2cffi},stats,flake8
+envlist = clean,py{26,27,33,34,35,36,37,py}-ij{python,yajl,yajl2,yajl2cffi},stats,flake8
 skipsdist = True
 
-[travis:env]
-BACKEND =
-  python: ijpython
-  yajl: ijyajl
-  yajl2: ijyajl2
-  yajl2-cffi: ijyajl2cffi
+[travis]
+python =
+  2.6: py26
+  2.7: py27
+  3.3: py33-ijpython
+  3.4: py34-ijpython
+  3.5: py35-ijpython
+  3.6: py36-ijpython
+  3.7: py37-ijpython
+  pypy-5.4.1: pypy-ijpython
+  pypy3.3-5.2-alpha1: pypy3-ijpython
 
 [testenv]
 deps =