Check if the routes object really responds to define_mount_prefix.

1 files changed, 18 insertions, 0 deletions

diff --git a/actionpack/test/dispatch/mount_test.rb b/actionpack/test/dispatch/mount_test.rb
index 0f584af31e..1a032539b9 100644
--- a/actionpack/test/dispatch/mount_test.rb
+++ b/actionpack/test/dispatch/mount_test.rb
@@ -2,6 +2,17 @@ require 'abstract_unit'
 
 class TestRoutingMount < ActionDispatch::IntegrationTest
   Router = ActionDispatch::Routing::RouteSet.new
+
+  class FakeEngine
+    def self.routes
+      Object.new
+    end
+
+    def self.call(env)
+      [200, {"Content-Type" => "text/html"}, ["OK"]]
+    end
+  end
+
   Router.draw do
     SprocketsApp = lambda { |env|
       [200, {"Content-Type" => "text/html"}, ["#{env["SCRIPT_NAME"]} -- #{env["PATH_INFO"]}"]]
@@ -10,6 +21,8 @@ class TestRoutingMount < ActionDispatch::IntegrationTest
     mount SprocketsApp, :at => "/sprockets"
     mount SprocketsApp => "/shorthand"
 
+    mount FakeEngine, :at => "/fakeengine"
+
     scope "/its_a" do
       mount SprocketsApp, :at => "/sprocket"
     end
@@ -33,4 +46,9 @@ class TestRoutingMount < ActionDispatch::IntegrationTest
     get "/shorthand/omg"
     assert_equal "/shorthand -- /omg", response.body
   end
+
+  def test_with_fake_engine_does_not_call_invalid_method
+    get "/fakeengine"
+    assert_equal "OK", response.body
+  end
 end
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