Add some utilities for easier testing

.gitignore

@@ -38,3 +38,5 @@ nosetests.xml
 env/
 .venv/
 .idea/
+testing
+attachments

Makefile

@@ -0,0 +1,38 @@
+setup:
+	make clean
+	mkdir -p testing
+	make prep-env envname=py3.9-dj2.2
+	make prep-env envname=py3.9-dj3.1
+	make prep-env envname=py3.9-dj3.2
+
+start-22:
+	make runserver envname=py3.9-dj2.2
+
+start-31:
+	make runserver envname=py3.9-dj3.1
+
+start-32:
+	make runserver envname=py3.9-dj3.2
+
+
+prep-env:
+	mkdir testing/$(envname)
+	.tox/$(envname)/bin/django-admin startproject testproject testing/$(envname)
+	.tox/$(envname)/bin/pip install -e .
+
+	ln -s ../../examples/contact_form testing/$(envname)/
+	ln -s ../../examples/simple testing/$(envname)/
+
+	gsed -i "40 i 'simple', 'contact_form'," testing/$(envname)/testproject/settings.py
+	.tox/$(envname)/bin/python testing/$(envname)/manage.py migrate
+	cp examples/testproject/urls.py testing/$(envname)/testproject/
+
+  # not supported in django 2.x
+  # DJANGO_SUPERUSER_USERNAME=admin DJANGO_SUPERUSER_PASSWORD=admin DJANGO_SUPERUSER_EMAIL=admin@example.com .tox/$(envname)/bin/python testing/$(envname)/manage.py createsuperuser --noinput
+	echo "from django.contrib import auth; auth.get_user_model().objects.create_superuser('admin', 'admin@example.com', 'admin')" | .tox/$(envname)/bin/python testing/$(envname)/manage.py shell
+
+runserver:
+	.tox/$(envname)/bin/python testing/$(envname)/manage.py runserver localhost:8000
+
+clean:
+	 rm -rf testing

examples/contact_form/admin.py

@@ -0,0 +1,12 @@
+from django.contrib import admin
+
+from . import models
+
+
+class AttachmentInline(admin.StackedInline):
+    model = models.Attachment
+    extra = 0
+
+@admin.register(models.Message)
+class MessageAdmin(admin.ModelAdmin):
+    inlines = [AttachmentInline]

examples/simple/admin.py

@@ -0,0 +1,8 @@
+from django.contrib import admin
+
+from . import models
+
+
+@admin.register(models.Attachment)
+class AttachmentAdmin(admin.ModelAdmin):
+    pass

examples/simple/views.py

@@ -1,4 +1,5 @@
 from django.views.generic.edit import FormView
+from django.urls import reverse
 
 from .forms import UploadForm
 from .models import Attachment
@@ -7,9 +8,11 @@
 class UploadView(FormView):
     template_name = 'form.html'
     form_class = UploadForm
-    success_url = '/done/'
 
     def form_valid(self, form):
         for each in form.cleaned_data['attachments']:
             Attachment.objects.create(file=each)
         return super(UploadView, self).form_valid(form)
+
+    def get_success_url(self):
+        return reverse('admin:simple_attachment_changelist')

examples/testproject/urls.py

@@ -0,0 +1,8 @@
+from django.contrib import admin
+from django.urls import path, include
+
+urlpatterns = [
+    path('admin/', admin.site.urls),
+    path('contact/', include('contact_form.urls')),
+    path('simple/', include('simple.urls')),
+]