test/unit/graphviz_test.rb in rails-erd-1.5.2 vs test/unit/graphviz_test.rb in rails-erd-1.6.0

@@ -302,16 +302,24 @@
     create_model "Author", :name => :string
     assert_match %r(\A"\w+\|.*"\Z)m, find_dot_node(diagram(:orientation => :vertical), "m_Author")[:label].to_gv
   end
 
   test "generate should create edge for each relationship" do
-    create_model "Foo", :bar => :references do
-      belongs_to :bar
+    # TODO: Once we drop Rails 3.2 support, we _should_ be able to drop the
+    #   :respond_to? check
+    #
+    if respond_to? :skip
+      skip("multiple edges between the same objects can cause segfaults in some versions of Graphviz")
+
+      create_model "Foo", :bar => :references do
+        belongs_to :bar
+      end
+      create_model "Bar", :foo => :references do
+        belongs_to :foo
+      end
+
+      assert_equal [["m_Bar", "m_Foo"], ["m_Foo", "m_Bar"]], find_dot_node_pairs(diagram).sort
     end
-    create_model "Bar", :foo => :references do
-      belongs_to :foo
-    end
-    assert_equal [["m_Bar", "m_Foo"], ["m_Foo", "m_Bar"]], find_dot_node_pairs(diagram).sort
   end
 
   test "generate should create edge to polymorphic entity if polymorphism is true" do
     create_model "Cannon", :defensible => :references do
       belongs_to :defensible, :polymorphic => true