1 files changed, 12 insertions, 0 deletions
diff --git a/actionview/test/lib/controller/fake_models.rb b/actionview/test/lib/controller/fake_models.rb
index cb02a56cb4..789b1d198b 100644
--- a/actionview/test/lib/controller/fake_models.rb
+++ b/actionview/test/lib/controller/fake_models.rb
@@ -170,3 +170,15 @@ end
 
 class Car < Struct.new(:color)
 end
+
+class Plane
+  attr_reader :to_key
+
+  def model_name
+    OpenStruct.new param_key: 'airplane'
+  end
+
+  def save
+    @to_key = [1]
+  end
+end