[...]
+static void resource_test_insert_resource(struct kunit *test, struct resource *parent,
+					  resource_size_t start, resource_size_t size,
+					  const char *name, unsigned long flags)
+{
+	struct resource *res;
+
+	res = kzalloc(sizeof(*res), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, res);
+
+	res->name = name;
+	res->start = start;
+	res->end = start + size - 1;
+	res->flags = flags;
+	if (insert_resource(parent, res)) {
+		kfree(res);
+		KUNIT_FAIL_AND_ABORT(test, "Fail to insert resource %pR\n", res);

+	}
+
+	kunit_add_action_or_reset(test, remove_free_resource, res);
+}