Add tests for new Django 4.2 settings

tests/test_settings.py

@@ -0,0 +1,32 @@
+import django
+from django.test import override_settings
+import pytest
+from imagekit.conf import ImageKitConf, settings
+
+
+@pytest.mark.skipif(
+    django.VERSION < (4, 2),
+    reason="STORAGES was introduced in Django 4.2",
+)
+def test_custom_storages():
+    with override_settings(
+        STORAGES={
+            "default": {
+                "BACKEND": "tests.utils.CustomStorage",
+            }
+        },
+    ):
+        conf = ImageKitConf()
+        assert conf.configure_default_file_storage(None) == "tests.utils.CustomStorage"
+
+
+@pytest.mark.skipif(
+    django.VERSION >= (5, 1),
+    reason="DEFAULT_FILE_STORAGE is removed in Django 5.1.",
+)
+def test_custom_default_file_storage():
+    with override_settings(DEFAULT_FILE_STORAGE="tests.utils.CustomStorage"):
+        # If we don’t remove this, Django 4.2 will keep the old value.
+        del settings.STORAGES
+        conf = ImageKitConf()
+        assert conf.configure_default_file_storage(None) == "tests.utils.CustomStorage"

tests/utils.py

@@ -6,6 +6,7 @@
 
 from bs4 import BeautifulSoup
 from django.core.files import File
+from django.core.files.storage import FileSystemStorage
 from django.template import Context, Template
 from PIL import Image
 
@@ -79,6 +80,10 @@ def assert_file_is_truthy(file):
     assert bool(file), 'File is not truthy'
 
 
+class CustomStorage(FileSystemStorage):
+    pass
+
+
 class DummyAsyncCacheFileBackend(Simple):
     """
     A cache file backend meant to simulate async generation.