add test for wagtail hook icon registration (#52)

pyproject.toml

@@ -46,6 +46,7 @@ dev = [
   "nox[uv]",
   "pytest",
   "pytest-cov",
+  "pytest-django",
   "pytest-randomly",
   "pytest-xdist",
   "ruff",
@@ -79,6 +80,7 @@ exclude_lines = [
   "if TYPE_CHECKING:",
   'def __str__\(self\)\s?\-?\>?\s?\w*\:'
 ]
+fail_under = 100
 
 [tool.coverage.run]
 branch = true
@@ -115,8 +117,9 @@ module = ["tests.*", "wagtail.*"]
 
 [tool.pytest.ini_options]
 addopts = "-n auto --dist loadfile --doctest-modules"
+django_find_project = false
 norecursedirs = ".* bin build dist *.egg htmlcov logs node_modules templates venv"
-python_files = "tests.py test_*.py *_tests.py"
+python_files = ["tests.py", "test_*.py", "*_tests.py"]
 pythonpath = "src"
 testpaths = ["tests"]
 

tests/conftest.py

@@ -21,6 +21,16 @@ def pytest_configure(config):
 TEST_SETTINGS = {
     "INSTALLED_APPS": [
         "wagtail_heroicons",
+        "django.contrib.auth",
+        "django.contrib.contenttypes",
         "wagtail",
     ],
+    "STATIC_URL": "/static/",
+    "TEMPLATES": [
+        {
+            "BACKEND": "django.template.backends.django.DjangoTemplates",
+            "DIRS": [],
+            "APP_DIRS": True,
+        },
+    ],
 }

tests/test_wagtail_hooks.py

@@ -0,0 +1,18 @@
+from __future__ import annotations
+
+import itertools
+
+from django.template.utils import get_app_template_dirs
+from wagtail import hooks
+
+
+def test_register_icons():
+    icon_hooks = hooks.get_hooks("register_icons")
+    all_icons = sorted(itertools.chain.from_iterable(hook([]) for hook in icon_hooks))
+
+    app_template_dirs = get_app_template_dirs("templates")
+    template_files = [
+        str(filepath) for dir_ in app_template_dirs for filepath in dir_.rglob("*")
+    ]
+
+    assert all(icon in template_files for icon in all_icons)