Merge branch '2-0-stable'

* 2-0-stable:
  adding a test for the dot visitor

2 files changed, 10 insertions, 3 deletions

diff --git a/lib/arel/nodes/node.rb b/lib/arel/nodes/node.rb
index 634e580a8f..567221aab2 100644
--- a/lib/arel/nodes/node.rb
+++ b/lib/arel/nodes/node.rb
@@ -9,7 +9,7 @@ module Arel
       # Factory method to create a Nodes::Not node that has the recipient of
       # the caller as a child.
       def not
-        Nodes::Not.new self
+        Nodes::Not.new Nodes::Grouping.new self
       end
 
       ###
diff --git a/lib/arel/visitors/dot.rb b/lib/arel/visitors/dot.rb
index 2ce8b6814f..c515cbe220 100644
--- a/lib/arel/visitors/dot.rb
+++ b/lib/arel/visitors/dot.rb
@@ -84,9 +84,16 @@ module Arel
         visit_edge o, "attribute"
       end
 
-      def visit_Arel_Nodes_Offset o
-        visit_edge o, "value"
+      def unary o
+        visit_edge o, "expr"
       end
+      alias :visit_Arel_Nodes_Group             :unary
+      alias :visit_Arel_Nodes_Grouping          :unary
+      alias :visit_Arel_Nodes_Having            :unary
+      alias :visit_Arel_Nodes_Not               :unary
+      alias :visit_Arel_Nodes_Offset            :unary
+      alias :visit_Arel_Nodes_On                :unary
+      alias :visit_Arel_Nodes_UnqualifiedColumn :unary
 
       def visit_Arel_Nodes_InsertStatement o
         visit_edge o, "relation"