Merge remote-tracking branch 'upstream/master' into add-star-for-action-scope

* upstream/master: (184 commits)
  Fix issues with pdf-js dependencies
  fix missing changelog entries for security release on 2017-01-23
  Update top bar issues icon
  Fix pipeline icon in contextual nav for projects
  Since mysql is not a priority anymore, test it less
  Fix order of CI lint ace editor loading
  Add container registry and spam logs icons
  Fix different Markdown styles
  Backport to CE for:
  Make new dropdown dividers full width
  Fix spec
  Fix spec
  Fix spec
  Bump GITLAB_SHELL_VERSION and GITALY_VERSION to support unhiding refs
  Add changelog
  Install yarn via apt in update guides
  Use long curl options
  fix
  Add a spec for concurrent process
  Remove monkey-patched Array.prototype.first() and last() methods
  ...

1 files changed, 10 insertions, 4 deletions

diff --git a/lib/declarative_policy.rb b/lib/declarative_policy.rb
index b1eb1a6cef1..ae65653645b 100644
--- a/lib/declarative_policy.rb
+++ b/lib/declarative_policy.rb
@@ -28,7 +28,13 @@ module DeclarativePolicy
 
       subject = find_delegate(subject)
 
-      class_for_class(subject.class)
+      policy_class = class_for_class(subject.class)
+      raise "no policy for #{subject.class.name}" if policy_class.nil?
+      policy_class
+    end
+
+    def has_policy?(subject)
+      !class_for_class(subject.class).nil?
     end
 
     private
@@ -51,9 +57,7 @@ module DeclarativePolicy
         end
       end
 
-      policy_class = subject_class.instance_variable_get(CLASS_CACHE_IVAR)
-      raise "no policy for #{subject.class.name}" if policy_class.nil?
-      policy_class
+      subject_class.instance_variable_get(CLASS_CACHE_IVAR)
     end
 
     def compute_class_for_class(subject_class)
@@ -71,6 +75,8 @@ module DeclarativePolicy
           nil
         end
       end
+
+      nil
     end
 
     def find_delegate(subject)