Setup CI to run againt MySQL.

.github/workflows/test.yml

@@ -26,6 +26,20 @@ jobs:
           --health-interval 10s
           --health-timeout 5s
           --health-retries 5
+      mysql:
+        image: mysql:8.0
+        env:
+          MYSQL_USER: mysql
+          MYSQL_PASSWORD: mysql
+          MYSQL_DATABASE: test_syzygy
+          MYSQL_RANDOM_ROOT_PASSWORD: 1
+        ports:
+        - 3306:3306
+        options: >-
+          --health-cmd "mysqladmin ping"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
 
     steps:
     - uses: actions/checkout@v2
@@ -58,11 +72,16 @@ jobs:
       run: |
         tox
       env:
-        DB_NAME: postgres
-        DB_USER: postgres
-        DB_PASSWORD: postgres
-        DB_HOST: localhost
-        DB_PORT: 5432
+        DB_POSTGRES_NAME: postgres
+        DB_POSTGRES_USER: postgres
+        DB_POSTGRES_PASSWORD: postgres
+        DB_POSTGRES_HOST: localhost
+        DB_POSTGRES_PORT: 5432
+        DB_MYSQL_NAME: syzygy
+        DB_MYSQL_USER: mysql
+        DB_MYSQL_PASSWORD: mysql
+        DB_MYSQL_HOST: "127.0.0.1"
+        DB_MYSQL_PORT: 3306
 
     - name: Coveralls
       uses: AndreMiras/coveralls-python-action@develop

tests/settings/mysql.py

@@ -0,0 +1,21 @@
+import os
+
+from . import *  # noqa
+
+DB_HOST = os.environ.get("DB_MYSQL_HOST", "127.0.0.1")
+DB_PORT = os.environ.get("DB_MYSQL_PORT", "3306")
+DB_USER = os.environ.get("DB_MYSQL_USER", "mysql")
+DB_PASSWORD = os.environ.get("DB_MYSQL_PASSWORD", "mysql")
+DB_NAME = os.environ.get("DB_MYSQL_NAME", "mysql")
+
+
+DATABASES = {
+    "default": {
+        "ENGINE": "django.db.backends.mysql",
+        "HOST": DB_HOST,
+        "PORT": DB_PORT,
+        "NAME": DB_NAME,
+        "USER": DB_USER,
+        "PASSWORD": DB_PASSWORD,
+    }
+}

tests/settings/postgresql.py

@@ -2,10 +2,10 @@
 
 from . import *  # noqa
 
-DB_HOST = os.environ.get("DB_HOST", "localhost")
-DB_PORT = os.environ.get("DB_PORT", "5432")
-DB_USER = os.environ.get("DB_USER", "postgres")
-DB_PASSWORD = os.environ.get("DB_PASSWORD", "postgres")
+DB_HOST = os.environ.get("DB_POSTGRES_HOST", "localhost")
+DB_PORT = os.environ.get("DB_POSTGRES_PORT", "5432")
+DB_USER = os.environ.get("DB_POSTGRES_USER", "postgres")
+DB_PASSWORD = os.environ.get("DB_POSTGRES_PASSWORD", "postgres")
 
 DATABASES = {
     "default": {

tox.ini

@@ -7,9 +7,9 @@ envlist =
     isort
     mypy
     pypi
-    py{38,39}-{3.2,4.2}-{sqlite,postgresql}
-    py310-{3.2,4.2,5.0,main}-{sqlite,postgresql}
-    py{311,312}-{4.2,5.0,main}-{sqlite,postgresql}
+    py{38,39}-{3.2,4.2}-{sqlite,postgresql,mysql}
+    py310-{3.2,4.2,5.0,main}-{sqlite,postgresql,mysql}
+    py{311,312}-{4.2,5.0,main}-{sqlite,postgresql,mysql}
 
 [gh-actions]
 python =
@@ -30,6 +30,7 @@ usedevelop = true
 setenv =
     DJANGO_SETTINGS_MODULE=tests.settings
     postgresql: DJANGO_SETTINGS_MODULE=tests.settings.postgresql
+    mysql: DJANGO_SETTINGS_MODULE=tests.settings.mysql
 passenv =
     GITHUB_*
     DB_*
@@ -43,6 +44,7 @@ deps =
     5.0: Django>=5,<5.1
     main: https://github.com/django/django/archive/main.tar.gz
     postgresql: psycopg2-binary
+    mysql: mysqlclient
 ignore_outcome =
     main: true