Run tests on openend PRs and master push

.coveragerc

@@ -0,0 +1,4 @@
+[run]
+branch = True
+source = django_jsonform
+omit = *tests*,__main__

.github/workflows/tests.yml

@@ -0,0 +1,58 @@
+name: django-jsonform tests
+
+on:
+  pull_request:
+  push:
+    branches: master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        django-version: ["2.2", "3.2", "4.1", "4.2", "main"]
+        exclude:
+          - django-version: 2.2
+            python-version: 3.10
+          - django-version: 2.2
+            python-version: 3.11
+          - django-version: 3.2
+            python-version: 3.11
+          - django-version: 4.1
+            python-version: 3.7
+          - django-version: 4.2
+            python-version: 3.7
+          - django-version: "main"
+            python-version: 3.7
+          - django-version: "main"
+            python-version: 3.8
+          - django-version: "main"
+            python-version: 3.9
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Upgrade pip
+        run: python -m pip install --upgrade pip
+      - name: Install Django ${{ matrix.django-version }}
+        run: python -m pip install django~=${{ matrix.django-version }}.0
+        if: matrix.django-version != 'main'
+      - name: Install Django main
+        run: python -m pip install https://github.com/django/django/archive/refs/heads/main.zip
+        if: matrix.django-version == 'main'
+      - name: Install library to run tests
+        run: python -m pip install -e .
+      - name: Verify versions
+        run: |
+          python --version
+          python -c "import django ; print(django.VERSION)"
+      - name: Run tests
+        run: |
+          python -m pip install coverage
+          coverage run tests/__main__.py
+          coverage report -m

tests/__main__.py

@@ -2,7 +2,6 @@
 import sys
 import unittest
 import django
-import django_settings
 
 
 TEST_DIR = os.path.dirname(os.path.abspath(__file__))

tests/django_settings.py

@@ -1,9 +1,18 @@
+SECRET_KEY = "secret for test"
+
 ROOT_URLCONF='django_jsonform.urls'
 
 INSTALLED_APPS=[
     'django_jsonform',
 ]
 
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': ":memory:",
+    },
+}
+
 TEMPLATES = [
     {
         'BACKEND': 'django.template.backends.django.DjangoTemplates',