Receiver#flunk accepts stacktrace as final arg

CHANGELOG.txt

@@ -4,6 +4,7 @@
 
 == ruote - 2.3.1    not yet released
 
+- Receiver#flunk accepts stacktrace as final argument
 - allow for "1x == 2x" (turn it into "'1x' == '2x'") (== and !=)
 - fix parsing '2013-02-08T17:36:10Z' (reported by Hartog de Mik)
 

lib/ruote/receiver/base.rb

@@ -78,12 +78,16 @@ def flunk(workitem, error_class_or_instance_or_message, *err_arguments)
       err = error_class_or_instance_or_message
 
       if err.is_a?(String)
+
         err = RuntimeError.new(err)
         err.set_backtrace(caller)
 
       elsif err.is_a?(Class)
+
+        trace = err_arguments.last.is_a?(Array) ? err_arguments.pop : nil
+
         err = err.new(*err_arguments)
-        err.set_backtrace(caller)
+        err.set_backtrace(trace || caller)
       end
 
       workitem = workitem.h if workitem.respond_to?(:h)

test/functional/ft_25_receiver.rb

@@ -224,6 +224,14 @@ def on_cancel
     end
   end
 
+  class BacktraceFlunkParticipant < Ruote::Participant
+
+    def on_workitem
+
+      flunk(workitem, ArgumentError, 'nada', %w[ aaa bbb ccc ])
+    end
+  end
+
   def test_flunk
 
     @dashboard.register :alpha, FlunkParticipant
@@ -255,5 +263,22 @@ def test_string_flunk
     assert_equal 'out of order', r['error']['message']
     assert_match __FILE__, r['error']['trace'].first
   end
+
+  def test_backtrace_flunk
+
+    @dashboard.register :alpha, BacktraceFlunkParticipant
+
+    wfid =
+      @dashboard.launch(Ruote.define do
+        alpha
+      end)
+
+    r = @dashboard.wait_for(wfid)
+
+    assert_equal 'error_intercepted', r['action']
+    assert_equal 'ArgumentError', r['error']['class']
+    assert_equal 'nada', r['error']['message']
+    assert_equal %w[ aaa bbb ccc ], r['error']['trace']
+  end
 end