Extend CI and local test coverage to MySQL and SQLite (#744)

* Add test runner and improve test with multi databases

* Enhance cross-database compatibility and testing

- Fix TRUNCATE command support detection for different databases
- Add conditional PostgreSQL-specific model registration
- Improve database-specific test skipping logic
- Remove SQLite from TRUNCATE supported vendors list

* Add docker compose for testing

* Improve CI/CD with multi-database support

- Add separate test workflows for SQLite, PostgreSQL, and MySQL

* Add `mysqlclient` deps

* fix minor

- Add mysqlclient deps
- upload coverage step

* Fix coverage upload name conflicts in CI workflow

- Add database type to coverage upload names (SQLite/PostgreSQL/MySQL)

.github/actions/setup-python-deps/action.yml

@@ -0,0 +1,30 @@
+name: 'Setup Python and Dependencies'
+description: 'Common setup steps for Python and pip dependencies'
+
+inputs:
+  python-version:
+    description: 'Python version to setup'
+    required: true
+  cache-key-prefix:
+    description: 'Prefix for pip cache key'
+    required: true
+
+runs:
+  using: 'composite'
+  steps:
+    - name: Set up Python ${{ inputs.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ inputs.python-version }}
+
+    - name: Cache pip
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/pip
+        key: ${{ inputs.cache-key-prefix }}-${{ inputs.python-version }}-${{ hashFiles('**/pyproject.toml') }}
+
+    - name: Install Python dependencies
+      shell: bash
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install --upgrade tox tox-gh-actions

.github/workflows/test.yml

@@ -3,67 +3,125 @@ name: Test
 on: [push, pull_request]
 
 jobs:
-  build:
+  test-sqlite:
+    name: SQLite • Python ${{ matrix.python-version }}
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
-      max-parallel: 5
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+    steps:
+      - uses: actions/checkout@v4
 
+      - name: Setup Python and dependencies
+        uses: ./.github/actions/setup-python-deps
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache-key-prefix: sqlite3
+
+      - name: Run tests
+        env:
+          TEST_DB_BACKEND: sqlite3
+        run: tox -v
+
+      - name: Upload coverage
+        uses: codecov/codecov-action@v5
+        with:
+          name: SQLite • Python ${{ matrix.python-version }}
+
+  test-postgres:
+    name: PostgreSQL • Python ${{ matrix.python-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     services:
       postgres:
-        image: postgres:14
+        image: postgres:15
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres
-          POSTGRES_DB: postgres
+          POSTGRES_DB: auditlog
         ports:
           - 5432/tcp
         options: >-
           --health-cmd pg_isready
           --health-interval 10s
           --health-timeout 5s
-          --health-retries 5
-
+          --health-retries 10
     steps:
       - uses: actions/checkout@v4
 
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      - name: Setup Python and dependencies
+        uses: ./.github/actions/setup-python-deps
         with:
           python-version: ${{ matrix.python-version }}
+          cache-key-prefix: postgresql
 
-    - name: Get pip cache dir
-      id: pip-cache
-      run: |
-        echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
-
-    - name: Cache
-      uses: actions/cache@v4
-      with:
-        path: ${{ steps.pip-cache.outputs.dir }}
-        key:
-          -${{ matrix.python-version }}-v1-${{ hashFiles('**/setup.py') }}
-        restore-keys: |
-          -${{ matrix.python-version }}-v1-
-
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        python -m pip install --upgrade tox tox-gh-actions
-
-    - name: Tox tests
-      run: |
-        tox -v
+      - name: Run tests
         env:
+          TEST_DB_BACKEND: postgresql
           TEST_DB_HOST: localhost
           TEST_DB_USER: postgres
           TEST_DB_PASS: postgres
-        TEST_DB_NAME: postgres
+          TEST_DB_NAME: auditlog
           TEST_DB_PORT: ${{ job.services.postgres.ports[5432] }}
 
+        run: tox -v
+
       - name: Upload coverage
         uses: codecov/codecov-action@v5
         with:
-        name: Python ${{ matrix.python-version }}
+          name: PostgreSQL • Python ${{ matrix.python-version }}
+
+  test-mysql:
+    name: MySQL • Python ${{ matrix.python-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+    services:
+      mysql:
+        image: mysql:8.0
+        env:
+          MYSQL_DATABASE: auditlog
+          MYSQL_USER: mysql
+          MYSQL_PASSWORD: mysql
+          MYSQL_ROOT_PASSWORD: mysql
+        ports:
+          - 3306/tcp
+        options: >-
+          --health-cmd="sh -c 'export MYSQL_PWD=\"$MYSQL_ROOT_PASSWORD\"; mysqladmin ping -h 127.0.0.1 --protocol=TCP -uroot --silent || exit 1'"
+          --health-interval=10s
+          --health-timeout=5s
+          --health-retries=20
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install MySQL client libraries
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libmysqlclient-dev pkg-config mysql-client
+
+      - name: Setup Python and dependencies
+        uses: ./.github/actions/setup-python-deps
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache-key-prefix: mysql
+
+      - name: Run tests
+        env:
+          TEST_DB_BACKEND: mysql
+          TEST_DB_HOST: 127.0.0.1
+          TEST_DB_USER: root
+          TEST_DB_PASS: mysql
+          TEST_DB_NAME: auditlog
+          TEST_DB_PORT: ${{ job.services.mysql.ports[3306] }}
+        run: tox -v
+
+      - name: Upload coverage
+        uses: codecov/codecov-action@v5
+        with:
+          name: MySQL • Python ${{ matrix.python-version }}

auditlog/management/commands/auditlogflush.py

@@ -83,7 +83,7 @@ class Command(BaseCommand):
 
 
 class TruncateQuery:
-    SUPPORTED_VENDORS = ("postgresql", "mysql", "sqlite", "oracle", "microsoft")
+    SUPPORTED_VENDORS = ("postgresql", "mysql", "oracle", "microsoft")
 
     @classmethod
     def support_truncate_statement(cls, database_vendor) -> bool:

auditlog_tests/docker-compose.yml

@@ -0,0 +1,47 @@
+services:
+  postgres:
+    container_name: auditlog_postgres
+    image: postgres:15
+    restart: "no"
+    environment:
+      POSTGRES_DB: auditlog
+      POSTGRES_USER: ${TEST_DB_USER}
+      POSTGRES_PASSWORD: ${TEST_DB_PASS}
+    ports:
+      - "${TEST_DB_PORT:-5432}:5432"
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+    healthcheck:
+      test: pg_isready -U ${TEST_DB_USER} -d auditlog
+      interval: 5s
+      timeout: 3s
+      retries: 5
+
+  mysql:
+    container_name: auditlog_mysql
+    platform: linux/x86_64
+    image: mysql:8.0
+    restart: "no"
+    environment:
+      MYSQL_DATABASE: auditlog
+      MYSQL_USER: ${TEST_DB_USER}
+      MYSQL_PASSWORD: ${TEST_DB_PASS}
+      MYSQL_ROOT_PASSWORD: ${TEST_DB_PASS}
+    ports:
+      - "${TEST_DB_PORT:-3306}:3306"
+    expose:
+      - '${TEST_DB_PORT:-3306}'
+    volumes:
+      - mysql-data:/var/lib/mysql 
+      - ./docker/db/init-mysql.sh:/docker-entrypoint-initdb.d/init.sh
+    healthcheck:
+      test: mysqladmin ping -h 127.0.0.1 -u ${TEST_DB_USER} --password=${TEST_DB_PASS}
+      interval: 5s
+      timeout: 3s
+      retries: 3
+
+volumes:
+  postgres-data:
+    driver: local
+  mysql-data:
+    driver: local

auditlog_tests/docker/db/init-mysql.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -e
+
+mysql -u root -p"$MYSQL_ROOT_PASSWORD" <<-EOSQL
+  GRANT ALL PRIVILEGES ON test_auditlog.* to '$MYSQL_USER';
+EOSQL

auditlog_tests/test_app/models.py

@@ -1,6 +1,6 @@
 import uuid
 
-from django.contrib.postgres.fields import ArrayField
+from django.conf import settings
 from django.core.serializers.json import DjangoJSONEncoder
 from django.db import models
 
@@ -311,6 +311,10 @@ class CharfieldTextfieldModel(models.Model):
     history = AuditlogHistoryField(delete_related=True)
 
 
+# Only define PostgreSQL-specific models when ArrayField is available
+if settings.TEST_DB_BACKEND == "postgresql":
+    from django.contrib.postgres.fields import ArrayField
+
     class PostgresArrayFieldModel(models.Model):
         """
         Test auditlog with Postgres's ArrayField
@@ -332,6 +336,12 @@ class PostgresArrayFieldModel(models.Model):
 
         history = AuditlogHistoryField(delete_related=True)
 
+else:
+
+    class PostgresArrayFieldModel(models.Model):
+        class Meta:
+            managed = False
+
 
 class NoDeleteHistoryModel(models.Model):
     integer = models.IntegerField(blank=True, null=True)
@@ -448,6 +458,7 @@ auditlog.register(AdditionalDataIncludedModel)
 auditlog.register(DateTimeFieldModel)
 auditlog.register(ChoicesFieldModel)
 auditlog.register(CharfieldTextfieldModel)
+if settings.TEST_DB_BACKEND == "postgresql":
     auditlog.register(PostgresArrayFieldModel)
 auditlog.register(NoDeleteHistoryModel)
 auditlog.register(JSONModel)

auditlog_tests/test_commands.py

@@ -6,9 +6,13 @@ from unittest import mock
 
 import freezegun
 from django.core.management import call_command
+from django.db import connection
 from django.test import TestCase, TransactionTestCase
+from django.test.utils import skipIf
 from test_app.models import SimpleModel
 
+from auditlog.management.commands.auditlogflush import TruncateQuery
+
 
 class AuditlogFlushTest(TestCase):
     def setUp(self):
@@ -139,6 +143,10 @@ class AuditlogFlushWithTruncateTest(TransactionTestCase):
         )
         self.assertEqual(err, "", msg="No stderr")
 
+    @skipIf(
+        not TruncateQuery.support_truncate_statement(connection.vendor),
+        "Database does not support TRUNCATE",
+    )
     def test_flush_with_truncate_and_yes(self):
         obj = self.make_object()
         self.assertEqual(obj.history.count(), 1, msg="There is one log entry.")
@@ -152,6 +160,10 @@ class AuditlogFlushWithTruncateTest(TransactionTestCase):
         )
         self.assertEqual(err, "", msg="No stderr")
 
+    @skipIf(
+        not TruncateQuery.support_truncate_statement(connection.vendor),
+        "Database does not support TRUNCATE",
+    )
     def test_flush_with_truncate_with_input_yes(self):
         obj = self.make_object()
         self.assertEqual(obj.history.count(), 1, msg="There is one log entry.")

auditlog_tests/test_postgresql.py

@@ -0,0 +1,51 @@
+"""
+PostgreSQL-specific tests for django-auditlog.
+"""
+
+from unittest import skipIf
+
+from django.conf import settings
+from django.test import TestCase
+from test_app.models import PostgresArrayFieldModel
+
+
+@skipIf(settings.TEST_DB_BACKEND != "postgresql", "PostgreSQL-specific test")
+class PostgresArrayFieldModelTest(TestCase):
+    databases = "__all__"
+
+    def setUp(self):
+        self.obj = PostgresArrayFieldModel.objects.create(
+            arrayfield=[PostgresArrayFieldModel.RED, PostgresArrayFieldModel.GREEN],
+        )
+
+    @property
+    def latest_array_change(self):
+        return self.obj.history.latest().changes_display_dict["arrayfield"][1]
+
+    def test_changes_display_dict_arrayfield(self):
+        self.assertEqual(
+            self.latest_array_change,
+            "Red, Green",
+            msg="The human readable text for the two choices, 'Red, Green' is displayed.",
+        )
+        self.obj.arrayfield = [PostgresArrayFieldModel.GREEN]
+        self.obj.save()
+        self.assertEqual(
+            self.latest_array_change,
+            "Green",
+            msg="The human readable text 'Green' is displayed.",
+        )
+        self.obj.arrayfield = []
+        self.obj.save()
+        self.assertEqual(
+            self.latest_array_change,
+            "",
+            msg="The human readable text '' is displayed.",
+        )
+        self.obj.arrayfield = [PostgresArrayFieldModel.GREEN]
+        self.obj.save()
+        self.assertEqual(
+            self.latest_array_change,
+            "Green",
+            msg="The human readable text 'Green' is displayed.",
+        )

auditlog_tests/test_settings.py

@@ -8,6 +8,8 @@ DEBUG = True
 
 SECRET_KEY = "test"
 
+TEST_DB_BACKEND = os.getenv("TEST_DB_BACKEND", "sqlite3")
+
 INSTALLED_APPS = [
     "django.contrib.auth",
     "django.contrib.contenttypes",
@@ -20,6 +22,7 @@ INSTALLED_APPS = [
     "test_app",
 ]
 
+
 MIDDLEWARE = [
     "django.middleware.common.CommonMiddleware",
     "django.contrib.sessions.middleware.SessionMiddleware",
@@ -28,6 +31,7 @@ MIDDLEWARE = [
     "auditlog.middleware.AuditlogMiddleware",
 ]
 
+if TEST_DB_BACKEND == "postgresql":
     DATABASES = {
         "default": {
             "ENGINE": "django.db.backends.postgresql",
@@ -40,6 +44,39 @@ DATABASES = {
             "PORT": os.getenv("TEST_DB_PORT", "5432"),
         }
     }
+elif TEST_DB_BACKEND == "mysql":
+    DATABASES = {
+        "default": {
+            "ENGINE": "django.db.backends.mysql",
+            "NAME": os.getenv(
+                "TEST_DB_NAME", "auditlog" + os.environ.get("TOX_PARALLEL_ENV", "")
+            ),
+            "USER": os.getenv("TEST_DB_USER", "root"),
+            "PASSWORD": os.getenv("TEST_DB_PASS", ""),
+            "HOST": os.getenv("TEST_DB_HOST", "127.0.0.1"),
+            "PORT": os.getenv("TEST_DB_PORT", "3306"),
+            "OPTIONS": {
+                "charset": "utf8mb4",
+                "init_command": "SET sql_mode='STRICT_TRANS_TABLES'",
+            },
+        }
+    }
+elif TEST_DB_BACKEND == "sqlite3":
+    DATABASES = {
+        "default": {
+            "ENGINE": "django.db.backends.sqlite3",
+            "NAME": os.getenv(
+                "TEST_DB_NAME",
+                (
+                    ":memory:"
+                    if os.getenv("TOX_PARALLEL_ENV")
+                    else "test_auditlog.sqlite3"
+                ),
+            ),
+        }
+    }
+else:
+    raise ValueError(f"Unsupported database backend: {TEST_DB_BACKEND}")
 
 TEMPLATES = [
     {

auditlog_tests/test_two_step_json_migration.py

@@ -2,8 +2,10 @@ import json
 from io import StringIO
 from unittest.mock import patch
 
+from django.conf import settings
 from django.core.management import CommandError, call_command
 from django.test import TestCase, override_settings
+from django.test.utils import skipIf
 from test_app.models import SimpleModel
 
 from auditlog.models import LogEntry
@@ -124,6 +126,7 @@ class AuditlogMigrateJsonTest(TestCase):
         # Assert
         self.assertEqual(call_count, 2)
 
+    @skipIf(settings.TEST_DB_BACKEND != "postgresql", "PostgreSQL-specific test")
     def test_native_postgres(self):
         # Arrange
         log_entry = self.make_logentry()
@@ -136,6 +139,7 @@ class AuditlogMigrateJsonTest(TestCase):
         self.assertEqual(errbuf, "")
         self.assertIsNotNone(log_entry.changes)
 
+    @skipIf(settings.TEST_DB_BACKEND != "postgresql", "PostgreSQL-specific test")
     def test_native_postgres_changes_not_overwritten(self):
         # Arrange
         log_entry = self.make_logentry()

auditlog_tests/tests.py

@@ -42,7 +42,6 @@ from test_app.models import (
     ModelPrimaryKeyModel,
     NoDeleteHistoryModel,
     NullableJSONModel,
-    PostgresArrayFieldModel,
     ProxyModel,
     RelatedModel,
     ReusableThroughRelatedModel,
@@ -1717,47 +1716,6 @@ class CharFieldTextFieldModelTest(TestCase):
             )
 
 
-class PostgresArrayFieldModelTest(TestCase):
-    databases = "__all__"
-
-    def setUp(self):
-        self.obj = PostgresArrayFieldModel.objects.create(
-            arrayfield=[PostgresArrayFieldModel.RED, PostgresArrayFieldModel.GREEN],
-        )
-
-    @property
-    def latest_array_change(self):
-        return self.obj.history.latest().changes_display_dict["arrayfield"][1]
-
-    def test_changes_display_dict_arrayfield(self):
-        self.assertEqual(
-            self.latest_array_change,
-            "Red, Green",
-            msg="The human readable text for the two choices, 'Red, Green' is displayed.",
-        )
-        self.obj.arrayfield = [PostgresArrayFieldModel.GREEN]
-        self.obj.save()
-        self.assertEqual(
-            self.latest_array_change,
-            "Green",
-            msg="The human readable text 'Green' is displayed.",
-        )
-        self.obj.arrayfield = []
-        self.obj.save()
-        self.assertEqual(
-            self.latest_array_change,
-            "",
-            msg="The human readable text '' is displayed.",
-        )
-        self.obj.arrayfield = [PostgresArrayFieldModel.GREEN]
-        self.obj.save()
-        self.assertEqual(
-            self.latest_array_change,
-            "Green",
-            msg="The human readable text 'Green' is displayed.",
-        )
-
-
 class AdminPanelTest(TestCase):
     def setUp(self):
         self.user = User.objects.create_user(

docs/requirements.txt

@@ -3,3 +3,4 @@ django>=4.2,<4.3
 sphinx
 sphinx_rtd_theme
 psycopg2-binary
+mysqlclient==2.2.5

runtests.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+
+# Run tests against all supported databases
+set -e
+
+# Default settings
+export TEST_DB_USER=${TEST_DB_USER:-testuser}
+export TEST_DB_PASS=${TEST_DB_PASS:-testpass}
+export TEST_DB_HOST=${TEST_DB_HOST:-127.0.0.1}
+export TEST_DB_NAME=${TEST_DB_NAME:-auditlog}
+
+# Cleanup on exit 
+trap 'docker compose -f auditlog_tests/docker-compose.yml down -v --remove-orphans 2>/dev/null || true' EXIT
+
+echo "Starting containers..."
+docker compose -f auditlog_tests/docker-compose.yml up -d
+
+echo "Waiting for databases..."
+echo "Waiting for PostgreSQL..."
+until docker compose -f auditlog_tests/docker-compose.yml exec postgres pg_isready -U ${TEST_DB_USER} -d auditlog >/dev/null 2>&1; do
+    sleep 1
+done
+
+echo "Waiting for MySQL..."
+
+until docker compose -f auditlog_tests/docker-compose.yml exec mysql mysqladmin ping -h 127.0.0.1 -u ${TEST_DB_USER} --password=${TEST_DB_PASS} --silent >/dev/null 2>&1; do
+    sleep 1
+done
+echo "Databases ready!"
+
+# Run tests for each database
+for backend in sqlite3 postgresql mysql; do
+    echo "Testing $backend..."
+    export TEST_DB_BACKEND=$backend
+    case $backend in
+        postgresql) export TEST_DB_PORT=5432 ;;
+        mysql) export TEST_DB_PORT=3306;;
+        sqlite3) unset TEST_DB_PORT ;;
+    esac
+    tox
+done
+
+echo "All tests completed!"

tox.ini

@@ -11,7 +11,7 @@ envlist =
 
 [testenv]
 setenv =
-  COVERAGE_FILE={toxworkdir}/.coverage.{envname}
+  COVERAGE_FILE={toxworkdir}/.coverage.{envname}.{env:TEST_DB_BACKEND}
 changedir = auditlog_tests
 commands =
     coverage run --source auditlog ./manage.py test
@@ -27,7 +27,10 @@ deps =
     codecov
     freezegun
     psycopg2-binary
+    mysqlclient
+    
 passenv=
+    TEST_DB_BACKEND
     TEST_DB_HOST
     TEST_DB_USER
     TEST_DB_PASS
@@ -56,7 +59,15 @@ description = Check for missing migrations
 changedir = auditlog_tests
 deps =
     Django>=4.2
-    psycopg2
+    psycopg2-binary
+    mysqlclient
+passenv=
+    TEST_DB_BACKEND
+    TEST_DB_HOST
+    TEST_DB_USER
+    TEST_DB_PASS
+    TEST_DB_NAME
+    TEST_DB_PORT
 commands =
     python manage.py makemigrations --check --dry-run