travis: run django-1.11.18 tests (PyMySQL#328)

Author: methane

.travis.yml

@@ -36,4 +36,29 @@ script:
 after_succes:
   - codecov
 
+matrix:
+  include:
+    - &django_py27
+      python: "2.7"
+      install:
+        - pip install -U pip
+        - wget https://github.com/django/django/archive/1.11.18.tar.gz
+        - tar xf 1.11.18.tar.gz
+        - pip install django-1.11.18/
+        - cp ci/test_mysql.py django-1.11.18/tests/
+        - pip install .
+
+      before_script:
+        - mysql -e 'create user django identified by "secret"'
+        - mysql -e 'grant all on *.* to django'
+        - mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql mysql
+
+      script:
+        - cd django-1.11.18/tests/
+        - ./runtests.py --parallel=1 --settings=test_mysql
+
+    - &django_py3
+      <<: *django_py27
+      python: "3.7"
+
 # vim: sw=2 ts=2 sts=2

ci/test_mysql.py

@@ -0,0 +1,45 @@
+# This is an example test settings file for use with the Django test suite.
+#
+# The 'sqlite3' backend requires only the ENGINE setting (an in-
+# memory database will be used). All other backends will require a
+# NAME and potentially authentication information. See the
+# following section in the docs for more information:
+#
+# https://docs.djangoproject.com/en/dev/internals/contributing/writing-code/unit-tests/
+#
+# The different databases that Django supports behave differently in certain
+# situations, so it is recommended to run the test suite against as many
+# database backends as possible.  You may want to create a separate settings
+# file for each of the backends you test against.
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.mysql',
+        'NAME': 'django_default',
+        'USER': 'django',
+        'HOST': '127.0.0.1',
+        'PASSWORD': 'secret',
+        'TEST': {
+            'CHARSET': 'utf8mb4',
+            'COLLATION': 'utf8mb4_general_ci',
+        },
+    },
+    'other': {
+        'ENGINE': 'django.db.backends.mysql',
+        'NAME': 'django_other',
+        'USER': 'django',
+        'HOST': '127.0.0.1',
+        'PASSWORD': 'secret',
+        'TEST': {
+            'CHARSET': 'utf8mb4',
+            'COLLATION': 'utf8mb4_general_ci',
+        },
+    }
+}
+
+SECRET_KEY = "django_tests_secret_key"
+
+# Use a fast hasher to speed up tests.
+PASSWORD_HASHERS = [
+    'django.contrib.auth.hashers.MD5PasswordHasher',
+]