removing test code from implementation

lib/arel/algebra/relations/writes.rb

 module Arel
   class Action < Compound
-    def == other
-      super || self.class === other && @relation == other.relation
-    end
   end
 
   class Deletion < Action
@@ -27,10 +24,6 @@ def call
       engine.create(self)
     end
 
-    def == other
-      super && @record == other.record
-    end
-
     def eval
       unoperated_rows + [Row.new(self, record.values.collect(&:value))]
     end

spec/algebra/unit/relations/relation_spec.rb

@@ -182,7 +182,10 @@ module Arel
         describe '#delete' do
           it 'manufactures a deletion relation' do
             Session.start do |s|
-              s.should_receive(:delete).with(Deletion.new(@relation))
+              s.should_receive(:delete) do |delete|
+                delete.relation.should == @relation
+                delete.should be_kind_of Deletion
+              end
               @relation.delete
             end
           end
@@ -191,8 +194,13 @@ module Arel
         describe '#insert' do
           it 'manufactures an insertion relation' do
             Session.start do |s|
-              record = { @relation[:name] => 'carl' }
-              s.should_receive(:create).with(Insert.new(@relation, record))
+              record = { @relation[:name] => Value.new('carl', @relation) }
+              s.should_receive(:create) do |insert|
+                insert.relation.should == @relation
+                insert.record.should == record
+                insert.should be_kind_of Insert
+                insert
+              end
               @relation.insert(record)
             end
           end
@@ -202,7 +210,12 @@ module Arel
           it 'manufactures an update relation' do
             Session.start do |s|
               assignments = { @relation[:name] => Value.new('bob', @relation) }
-              s.should_receive(:update).with(Update.new(@relation, assignments))
+              s.should_receive(:update) do |update|
+                update.relation.should == @relation
+                update.assignments.should == assignments
+                update.should be_kind_of Update
+                update
+              end
               @relation.update(assignments)
             end
           end