Use py.test for testing

Author: akx

docs/contributing.rst

@@ -13,7 +13,7 @@ We require features to be backed by a unit test.
 This way, we can test *django-polymorphic* against new Django versions.
 To run the included test suite, execute::
 
-    ./runtests.py
+    py.test
 
 To test support for multiple Python and Django versions, run tox from the repository root::
 

manage.py

@@ -0,0 +1,9 @@
+# This helps pytest-django locate the project.
+import os
+import sys
+
+if __name__ == "__main__":
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "polymorphic_test_settings")
+    from django.core.management import execute_from_command_line
+
+    execute_from_command_line(sys.argv)

polymorphic/tests/test_contrib.py

@@ -1,4 +1,4 @@
-from unittest import TestCase
+from django.test import TestCase
 
 from polymorphic.contrib.guardian import get_polymorphic_base_content_type
 from polymorphic.tests.models import Model2D, PlainC

polymorphic_test_settings.py

@@ -0,0 +1,56 @@
+import dj_database_url
+
+DEBUG = False
+DATABASES = {
+    "default": dj_database_url.config(
+        env="PRIMARY_DATABASE",
+        default="sqlite://:memory:",
+    ),
+    "secondary": dj_database_url.config(
+        env="SECONDARY_DATABASE",
+        default="sqlite://:memory:",
+    ),
+}
+DEFAULT_AUTO_FIELD = "django.db.models.AutoField"
+INSTALLED_APPS = (
+    "django.contrib.auth",
+    "django.contrib.contenttypes",
+    "django.contrib.messages",
+    "django.contrib.sessions",
+    "django.contrib.sites",
+    "django.contrib.admin",
+    "polymorphic",
+    "polymorphic.tests",
+)
+MIDDLEWARE = (
+    "django.middleware.common.CommonMiddleware",
+    "django.contrib.sessions.middleware.SessionMiddleware",
+    "django.middleware.csrf.CsrfViewMiddleware",
+    "django.contrib.auth.middleware.AuthenticationMiddleware",
+    "django.contrib.messages.middleware.MessageMiddleware",
+)
+SITE_ID = 3
+TEMPLATES = [
+    {
+        "BACKEND": "django.template.backends.django.DjangoTemplates",
+        "DIRS": (),
+        "OPTIONS": {
+            "loaders": (
+                "django.template.loaders.filesystem.Loader",
+                "django.template.loaders.app_directories.Loader",
+            ),
+            "context_processors": (
+                "django.template.context_processors.debug",
+                "django.template.context_processors.i18n",
+                "django.template.context_processors.media",
+                "django.template.context_processors.request",
+                "django.template.context_processors.static",
+                "django.contrib.messages.context_processors.messages",
+                "django.contrib.auth.context_processors.auth",
+            ),
+        },
+    }
+]
+POLYMORPHIC_TEST_SWAPPABLE = "polymorphic.swappedmodel"
+ROOT_URLCONF = None
+SECRET_KEY = "supersecret"

pyproject.toml

@@ -33,3 +33,6 @@ select = [
     "F841",
     "I",
 ]
+
+[tool.pytest.ini_options]
+DJANGO_SETTINGS_MODULE = "polymorphic_test_settings"

runtests.py

@@ -12,7 +12,9 @@ setenv =
 	postgres: DEFAULT_DATABASE = postgres:///default
 	postgres: SECONDARY_DATABASE = postgres:///secondary
 deps =
-	coverage
+	pytest
+	pytest-cov
+	pytest-django
 	dj-database-url
 	django32: Django ~= 3.2
 	django40: Django ~= 4.0
@@ -22,7 +24,7 @@ deps =
 	djangomain: https://github.com/django/django/archive/main.tar.gz
 	postgres: psycopg2
 commands =
-	coverage run --source polymorphic runtests.py
+	py.test --cov --cov-report=term-missing --cov-report=xml .
 
 [testenv:docs]
 deps =