test/place_test.rb in y_petri-2.0.14 vs test/place_test.rb in y_petri-2.0.15

@@ -77,8 +77,10 @@
     -> { g2.validate Complex( 1, 1 ) }.must_raise YPetri::GuardError
     @p.marking "must be in 0..10" do |m| fail unless ( 0..10 ) === m end
     @p.guards.size.must_equal 4
     g = @p.federated_guard_closure
     -> { g.( 11.1 ) }.must_raise YPetri::GuardError
-    -> { @p.marking = -1.11 }.must_raise YPetri::GuardError
+    begin; @p.marking = -1.11; rescue YPetri::GuardError => err
+      err.message.must_equal 'Marking -1.11:Float of P1 should not be negative!'
+    end
   end
 end