1 files changed, 31 insertions, 0 deletions
diff --git a/spec/arel/unit/relations/compound_spec.rb b/spec/arel/unit/relations/compound_spec.rb
new file mode 100644
index 0000000000..763e447db3
--- /dev/null
+++ b/spec/arel/unit/relations/compound_spec.rb
@@ -0,0 +1,31 @@
+require File.join(File.dirname(__FILE__), '..', '..', '..', 'spec_helper')
+
+module Arel
+  describe Compound do
+    before do
+      class ConcreteCompound < Compound
+        def initialize(relation)
+          @relation = relation
+        end
+        
+        def ==(other)
+          true
+        end
+      end
+      @relation = Table.new(:users)
+      @compound_relation = ConcreteCompound.new(@relation)
+    end
+    
+    describe '#attributes' do
+      it 'manufactures attributes associated with the compound relation' do
+        @compound_relation.attributes.should == @relation.attributes.collect { |a| a.bind(@compound_relation) }
+      end
+    end
+    
+    describe 'hashing' do
+      it 'implements hash equality' do
+        ConcreteCompound.new(@relation).should hash_the_same_as(ConcreteCompound.new(@relation))
+      end
+    end
+  end
+end
+\ No newline at end of file