Raise user friendly errors in case of Cyclic Dependency

Fixes #2506

1 files changed, 17 insertions, 0 deletions

diff --git a/spec/support/indexes.rb b/spec/support/indexes.rb
index 2ca67a63..d49f5767 100644
--- a/spec/support/indexes.rb
+++ b/spec/support/indexes.rb
@@ -130,5 +130,22 @@ module Spec
         end
       end
     end
+
+    def a_circular_index
+      build_index do
+        gem("foo", '0.2.6') do
+          dep "bar", ">= 0"
+        end
+
+        gem("bar", "1.0.0") do
+          dep "foo", ">= 0"
+        end
+
+        gem("circular_app", '1.0.0') do
+          dep "foo", ">= 0"
+          dep "bar", ">= 0"
+        end
+      end
+    end
   end
 end