Make tests more robust, use django-pytest

uv.lock

@@ -620,6 +620,18 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/a8/a4/20da314d277121d6534b3a980b29035dcd51e6744bd79075a6ce8fa4eb8d/pytest-8.4.2-py3-none-any.whl", hash = "sha256:872f880de3fc3a5bdc88a11b39c9710c3497a547cfa9320bc3c5e62fbf272e79", size = 365750, upload-time = "2025-09-04T14:34:20.226Z" },
 ]
 
+[[package]]
+name = "pytest-django"
+version = "4.12.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "pytest" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/13/2b/db9a193df89e5660137f5428063bcc2ced7ad790003b26974adf5c5ceb3b/pytest_django-4.12.0.tar.gz", hash = "sha256:df94ec819a83c8979c8f6de13d9cdfbe76e8c21d39473cfe2b40c9fc9be3c758", size = 91156, upload-time = "2026-02-14T18:40:49.235Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/83/a5/41d091f697c09609e7ef1d5d61925494e0454ebf51de7de05f0f0a728f1d/pytest_django-4.12.0-py3-none-any.whl", hash = "sha256:3ff300c49f8350ba2953b90297d23bf5f589db69545f56f1ec5f8cff5da83e85", size = 26123, upload-time = "2026-02-14T18:40:47.381Z" },
+]
+
 [[package]]
 name = "python-dateutil"
 version = "2.9.0.post0"
@@ -837,6 +849,7 @@ dev = [
     { name = "mypy" },
     { name = "pre-commit" },
     { name = "pytest" },
+    { name = "pytest-django" },
     { name = "pyyaml" },
     { name = "ruff" },
 ]
@@ -867,6 +880,7 @@ dev = [
     { name = "mypy", specifier = ">=1.10.1,<2" },
     { name = "pre-commit", specifier = ">=3.7.1,<4" },
     { name = "pytest", specifier = ">=8.2.2,<9" },
+    { name = "pytest-django", specifier = ">=4.12.0" },
     { name = "pyyaml", specifier = ">=6.0.1,<7" },
     { name = "ruff" },
 ]