ci: test Django 3.0 (#760)

Author: blueyed

.travis.yml

@@ -23,6 +23,8 @@ jobs:
       env: TOXENV=py37-dj21-sqlite-coverage
     - python: 3.7
       env: TOXENV=py37-dj22-sqlite-xdist-coverage
+    - python: 3.8-dev
+      env: TOXENV=py38-dj30-sqlite-xdist-coverage
 
     # Explicitly test (older) pytest 4.1.
     - python: 3.7

tox.ini

@@ -1,7 +1,8 @@
 [tox]
 envlist =
-    py{37}-dj{22,21,20,111}-postgres
-    py{35,36}-dj{22,21,20,111,110,19,18}-postgres
+    py37-dj{30,22,21,20,111}-postgres
+    py36-dj{30,22,21,20,111,110,19,18}-postgres
+    py35-dj{22,21,20,111,110,19,18}-postgres
     py34-dj{20,111,110}-postgres
     py27-dj{111,110}-{mysql_innodb,mysql_myisam,postgres}
     py27-dj{111,110,19,18}-postgres
@@ -11,6 +12,7 @@ envlist =
 extras = testing
 deps =
     djmaster: https://github.com/django/django/archive/master.tar.gz
+    dj30: Django>=3.0a1,<3.1
     dj22: Django>=2.2a1,<2.3
     dj21: Django>=2.1,<2.2
     dj20: Django>=2.0,<2.1