lib/floe/workflow.rb in floe-0.7.0 vs lib/floe/workflow.rb in floe-0.7.1

@@ -42,10 +42,10 @@
       raise Floe::InvalidWorkflowError, "Missing field \"StartAt\"" if payload["StartAt"].nil?
       raise Floe::InvalidWorkflowError, "\"StartAt\" not in the \"States\" field" unless payload["States"].key?(payload["StartAt"])
 
       @payload     = payload
       @context     = context
-      @credentials = credentials
+      @credentials = credentials || {}
       @start_at    = payload["StartAt"]
 
       @states         = payload["States"].to_a.map { |name, state| State.build!(self, name, state) }
       @states_by_name = @states.each_with_object({}) { |state, result| result[state.name] = state }