route: scm: fix git and mercurial changes action

If branch name has special character, "View revisions" link has route error.
For example, Redmine Mercurial hgsubversion mirror has "../sandbox/rails-3.2" named branch.

Git default branch of bare repository is defined at HEAD.
In most cases, it is *master*.
Mercurial GUI standard behavior is showing all revisions on top page.
So, Redmine default branch is *nil*.
Mercurial top page "View revisions" link has route error.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9617 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/routes.rb

@@ -214,6 +214,9 @@ RedmineApp::Application.routes.draw do
   get 'projects/:id/repository/:repository_id/statistics', :to => 'repositories#stats'
   get 'projects/:id/repository/:repository_id/graph', :to => 'repositories#graph'
 
+  get 'projects/:id/repository/:repository_id/changes(/*path(.:ext))',
+      :to => 'repositories#changes'
+
   get 'projects/:id/repository/:repository_id/revisions/:rev', :to => 'repositories#revision'
   get 'projects/:id/repository/:repository_id/revision', :to => 'repositories#revision'
   post   'projects/:id/repository/:repository_id/revisions/:rev/issues', :to => 'repositories#add_related_issue'
@@ -228,13 +231,16 @@ RedmineApp::Application.routes.draw do
   get 'projects/:id/repository/:repository_id/revisions/:rev/:action(/*path(.:ext))',
       :controller => 'repositories',
       :constraints => {
-            :action => /(browse|show|entry|changes|annotate|diff)/,
+            :action => /(browse|show|entry|annotate|diff)/,
             :rev    => /[a-z0-9\.\-_]+/
           }
 
   get 'projects/:id/repository/statistics', :to => 'repositories#stats'
   get 'projects/:id/repository/graph', :to => 'repositories#graph'
 
+  get 'projects/:id/repository/changes(/*path(.:ext))',
+      :to => 'repositories#changes'
+
   get 'projects/:id/repository/revisions', :to => 'repositories#revisions'
   get 'projects/:id/repository/revisions/:rev', :to => 'repositories#revision'
   get 'projects/:id/repository/revision', :to => 'repositories#revision'
@@ -249,7 +255,7 @@ RedmineApp::Application.routes.draw do
   get 'projects/:id/repository/revisions/:rev/:action(/*path(.:ext))',
       :controller => 'repositories',
       :constraints => {
-            :action => /(browse|show|entry|changes|annotate|diff)/,
+            :action => /(browse|show|entry|annotate|diff)/,
             :rev    => /[a-z0-9\.\-_]+/
           }
   get 'projects/:id/repository/:repository_id/:format(/*path(.:ext))', :to => 'repositories#entry', :format => /raw/

test/integration/routing/repositories_test.rb

@@ -134,16 +134,29 @@ class RoutingRepositoriesTest < ActionController::IntegrationTest
       )
     assert_routing(
         { :method => 'get',
-          :path => "/projects/redmine/repository/revisions/2457/changes" },
+          :path => "/projects/redmine/repository/changes" },
-        { :controller => 'repositories', :action => 'changes', :id => 'redmine',
+        { :controller => 'repositories', :action => 'changes', :id => 'redmine' }
-          :rev => '2457' }
-      )
-    assert_routing(
-        { :method => 'get',
-          :path => "/projects/redmine/repository/revisions/2457/changes/#{@path_hash[:path]}" },
-        { :controller => 'repositories', :action => 'changes', :id => 'redmine',
-          :path => @path_hash[:param] , :rev => '2457'}
       )
+    ['2457', 'master', 'slash/slash'].each do |rev|
+      assert_routing(
+           { :method => 'get',
+             :path => "/projects/redmine/repository/changes" },
+           { :controller => 'repositories', :action => 'changes', :id => 'redmine',
+             :rev => rev },
+           {},
+           { :rev => rev }
+         )
+    end
+    ['2457', 'master', 'slash/slash'].each do |rev|
+      assert_routing(
+           { :method => 'get',
+             :path => "/projects/redmine/repository/changes/#{@path_hash[:path]}" },
+           { :controller => 'repositories', :action => 'changes', :id => 'redmine',
+             :path => @path_hash[:param], :rev => rev },
+           {},
+           { :rev => rev }
+         )
+    end
     assert_routing(
         { :method => 'get',
           :path => "/projects/redmine/repository/revisions/2457/diff" },
@@ -215,16 +228,29 @@ class RoutingRepositoriesTest < ActionController::IntegrationTest
       )
     assert_routing(
         { :method => 'get',
-          :path => "/projects/redmine/repository/foo/revisions/2457/changes" },
+          :path => "/projects/redmine/repository/foo/changes" },
-        { :controller => 'repositories', :action => 'changes', :id => 'redmine', :repository_id => 'foo',
+        { :controller => 'repositories', :action => 'changes', :id => 'redmine', :repository_id => 'foo' }
-          :rev => '2457' }
-      )
-    assert_routing(
-        { :method => 'get',
-          :path => "/projects/redmine/repository/foo/revisions/2457/changes/#{@path_hash[:path]}" },
-        { :controller => 'repositories', :action => 'changes', :id => 'redmine', :repository_id => 'foo',
-          :path => @path_hash[:param] , :rev => '2457'}
       )
+    ['2457', 'master', 'slash/slash'].each do |rev|
+      assert_routing(
+           { :method => 'get',
+             :path => "/projects/redmine/repository/foo/changes" },
+           { :controller => 'repositories', :action => 'changes', :id => 'redmine',
+             :repository_id => 'foo', :rev => rev },
+           {},
+           { :rev => rev }
+         )
+    end
+    ['2457', 'master', 'slash/slash'].each do |rev|
+      assert_routing(
+           { :method => 'get',
+             :path => "/projects/redmine/repository/foo/changes/#{@path_hash[:path]}" },
+           { :controller => 'repositories', :action => 'changes', :id => 'redmine',
+             :repository_id => 'foo', :path => @path_hash[:param], :rev => rev },
+           {},
+           { :rev => rev }
+         )
+    end
     assert_routing(
         { :method => 'get',
           :path => "/projects/redmine/repository/foo/revisions/2457/diff" },