Add "View annotation prior to this change" button in the annotate view of Git (#35432).

Patch by Takenori TAKAKI.


git-svn-id: https://svn.redmine.org/redmine/trunk@22217 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/functional/repositories_git_controller_test.rb

@@ -589,9 +589,14 @@ class RepositoriesGitControllerTest < Redmine::RepositoryControllerTest
 
       # Line 23, changeset 2f9c0091
       assert_select 'tr' do
+        prev_blame, path = '4a79347ea4b7184938d9bbea0fd421a6079f71bb', 'sources/watchers_controller.rb'
         assert_select 'th.line-num a[data-txt=?]', '23'
         assert_select 'td.revision', :text => /2f9c0091/
         assert_select 'td.author', :text => 'jsmith'
+        assert_select 'td.previous' do
+          assert_select 'a.icon-history[href=?]',
+                        "/projects/subproject1/repository/#{@repository.id}/revisions/#{prev_blame}/annotate/#{path}"
+        end
         assert_select 'td', :text => /remove_watcher/
       end
     end