Add PyPy test matrix support

Signed-off-by: Aleksi Häkli <aleksi.hakli@iki.fi>

.travis.yml

@@ -2,6 +2,7 @@ dist: xenial
 language: python
 cache: pip
 python:
+  - pypy3.5
   - 3.5
   - 3.6
   - 3.7
@@ -12,6 +13,8 @@ env:
   - DJANGO=master
 matrix:
   exclude:
+    - python: pypy3.5
+      env: DJANGO=master
     - python: 3.5
       env: DJANGO=master
   allow_failures:
@@ -19,6 +22,7 @@ matrix:
       env: DJANGO=master
     - python: 3.7
       env: DJANGO=master
+  fast_finish: true
 install: pip install tox-travis codecov
 script: tox
 after_success:

requirements.txt

@@ -1,6 +1,6 @@
 -e .
 coverage==4.5.2
-mypy==0.670
+mypy==0.670 ; platform_python_implementation != 'PyPy'
 prospector==1.1.6.2
 pytest==4.3.0
 pytest-cov==2.6.1

tox.ini

@@ -1,10 +1,11 @@
 [tox]
 envlist =
-    py{35,36,37}-django{111,20,21}
+    py{py3,35,36,37}-django{111,20,21}
     py{36,37}-djangomaster
 
 [travis]
 python =
+    pypy3.5: pypy3
     3.5: py35
     3.6: py36
     3.7: py37
@@ -27,6 +28,6 @@ usedevelop = True
 commands =
     pytest
     prospector
-    mypy axes
+    py{35,36,37}: mypy axes
 setenv =
     PYTHONDONTWRITEBYTECODE=1