diff --git a/actionview/test/template/asset_tag_helper_test.rb b/actionview/test/template/asset_tag_helper_test.rb
index fe40010528..8592a2a083 100644
--- a/actionview/test/template/asset_tag_helper_test.rb
+++ b/actionview/test/template/asset_tag_helper_test.rb
@@ -27,6 +27,8 @@ class AssetTagHelperTest < ActionView::TestCase
   end
 
   AssetPathToTag = {
+    %(asset_path(""))             => %(),
+    %(asset_path("   "))          => %(),
     %(asset_path("foo"))          => %(/foo),
     %(asset_path("style.css"))    => %(/style.css),
     %(asset_path("xmlhr.js"))     => %(/xmlhr.js),