Fix test for GitAccessWiki, it's overriding change_access_check

lib/gitlab/git_access.rb

@@ -138,9 +138,7 @@ module Gitlab
 
       # Iterate over all changes to find if user allowed all of them to be applied
       changes_list.each do |change|
-        status = Checks::ChangeAccess.new(change,
-                                          user_access: user_access,
-                                          project: project).exec
+        status = check_single_change_access(change)
         unless status.allowed?
           # If user does not have access to make at least one change - cancel all push
           raise UnauthorizedError, status.message
@@ -148,6 +146,11 @@ module Gitlab
       end
     end
 
+    def check_single_change_access(change)
+      Checks::ChangeAccess.new(
+        change, user_access: user_access, project: project).exec
+    end
+
     def matching_merge_request?(newrev, branch_name)
       Checks::MatchingMergeRequest.new(newrev, branch_name, project).match?
     end

lib/gitlab/git_access_wiki.rb

 module Gitlab
   class GitAccessWiki < GitAccess
-    def change_access_check(change)
+    def check_single_change_access(change)
       if user_access.can_do_action?(:create_wiki)
         build_status_object(true)
       else