Allow use of assert_template with the :file option.

This worked in Rails 3.2, but was a regression in 4.0.0.beta1

1 files changed, 16 insertions, 1 deletions

diff --git a/actionpack/lib/action_controller/test_case.rb b/actionpack/lib/action_controller/test_case.rb
index bba1f1e201..e12bf0a1c6 100644
--- a/actionpack/lib/action_controller/test_case.rb
+++ b/actionpack/lib/action_controller/test_case.rb
@@ -16,6 +16,7 @@ module ActionController
       @_partials = Hash.new(0)
       @_templates = Hash.new(0)
       @_layouts = Hash.new(0)
+      @_files = Hash.new(0)
 
       ActiveSupport::Notifications.subscribe("render_template.action_view") do |name, start, finish, id, payload|
         path = payload[:layout]
@@ -39,6 +40,16 @@ module ActionController
 
         @_templates[path] += 1
       end
+
+      ActiveSupport::Notifications.subscribe("!render_template.action_view") do |name, start, finish, id, payload|
+        path = payload[:identifier]
+        next if payload[:virtual_path] # files don't have virtual path
+        if path
+          @_files[path] += 1
+          @_files[path.split("/").last] += 1
+        end
+
+      end
     end
 
     def teardown_subscriptions
@@ -106,7 +117,7 @@ module ActionController
           end
         assert matches_template, msg
       when Hash
-        options.assert_valid_keys(:layout, :partial, :locals, :count)
+        options.assert_valid_keys(:layout, :partial, :locals, :count, :file)
 
         if options.key?(:layout)
           expected_layout = options[:layout]
@@ -123,6 +134,10 @@ module ActionController
           end
         end
 
+        if options[:file]
+          assert_includes @_files.keys, options[:file]
+        end
+
         if expected_partial = options[:partial]
           if expected_locals = options[:locals]
             if defined?(@_rendered_views)