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+require 'spec_helper'
+
+module Arel
+ module Predicates
+ describe Polyadic do
+ before do
+ @relation1 = Arel::Table.new(:users)
+ @relation2 = Arel::Table.new(:photos)
+ @a = @relation1[:id]
+ @b = @relation2[:user_id]
+ end
+
+ describe '==' do
+ left = Polyadic.new @a, @b
+ right = Polyadic.new @b, @a
+
+ left.should != right
+ left.should == right
+ end
+ end
+ end
+end