Refs #5815, #31938, #34271 -- Created invalidate_view_cache function to manually invalidate cache key.

Thanks Laurent Tramoy for the implementation idea and Carlton Gibson for
the support.

tests/cache/tests.py

@@ -57,6 +57,7 @@ from django.test.utils import CaptureQueriesContext
 from django.utils import timezone, translation
 from django.utils.cache import (
     get_cache_key,
+    invalidate_view_cache,
     learn_cache_key,
     patch_cache_control,
     patch_vary_headers,
@@ -2625,6 +2626,43 @@ class CacheMiddlewareTest(SimpleTestCase):
         self.assertIsNotNone(result)
         self.assertEqual(result.content, b"Hello World 1")
 
+    def test_invalidate_view_decorator_cache_from_request(self):
+        """Invalidate cache key/value from request object"""
+        view = cache_page(10)(hello_world_view)
+        request = self.factory.get("/view/")
+        _ = view(request, "0")
+        cache_key = get_cache_key(request=request, key_prefix="", ignore_headers=True)
+        cached_response = cache.get(cache_key)
+
+        # Verify request.content has been chached
+        self.assertEqual(cached_response.content, b"Hello World 0")
+
+        # Delete cache key/value
+        invalidate_view_cache(request=request, key_prefix="")
+        cached_response = cache.get(cache_key)
+
+        # Confirm key/value has been deleted from cache
+        self.assertIsNone(cached_response)
+
+    def test_invalidate_view_decorator_cache_from_path(self):
+        """Invalidate cache key/value from path"""
+        view = cache_page(10)(hello_world_view)
+        path = "/view/"
+        request = self.factory.get(path)
+        _ = view(request, "0")
+        cache_key = get_cache_key(request=request, key_prefix="", ignore_headers=True)
+        cached_response = cache.get(cache_key)
+
+        # Verify request.content has been chached
+        self.assertEqual(cached_response.content, b"Hello World 0")
+
+        # Delete cache key/value
+        invalidate_view_cache(path=path, key_prefix="")
+        cached_response = cache.get(cache_key)
+
+        # Confirm key/value has been deleted from cache
+        self.assertIsNone(cached_response)
+
     def test_view_decorator(self):
         # decorate the same view with different cache decorators
         default_view = cache_page(3)(hello_world_view)