1 files changed, 81 insertions, 0 deletions
diff --git a/spec/arel/unit/relations/update_spec.rb b/spec/arel/unit/relations/update_spec.rb
new file mode 100644
index 0000000000..f411781392
--- /dev/null
+++ b/spec/arel/unit/relations/update_spec.rb
@@ -0,0 +1,81 @@
+require File.join(File.dirname(__FILE__), '..', '..', '..', 'spec_helper')
+
+module Arel
+  describe Update do
+    before do
+      @relation = Table.new(:users)
+    end
+    
+    describe '#to_sql' do
+      it "manufactures sql updating attributes when given multiple attributes" do
+        Update.new(@relation, @relation[:id] => 1, @relation[:name] => "nick").to_sql.should be_like("
+          UPDATE `users`
+          SET `users`.`id` = 1, `users`.`name` = 'nick'
+        ")
+      end
+      
+      it "manufactures sql updating attributes when given a ranged relation" do
+        Update.new(@relation.take(1), @relation[:name] => "nick").to_sql.should be_like("
+          UPDATE `users`
+          SET `users`.`name` = 'nick'
+          LIMIT 1
+        ")
+      end
+      
+      describe 'when given values whose types correspond to the types of the attributes' do
+        before do
+          @update = Update.new(@relation, @relation[:name] => "nick")
+        end
+        
+        it 'manufactures sql updating attributes' do
+          @update.to_sql.should be_like("
+            UPDATE `users`
+            SET `users`.`name` = 'nick'
+          ")
+        end
+      end
+
+      describe 'when given values whose types differ from from the types of the attributes' do
+        before do
+          @update = Update.new(@relation, @relation[:id] => '1-asdf')
+        end
+        
+        it 'manufactures sql updating attributes' do
+          @update.to_sql.should be_like("
+            UPDATE `users`
+            SET `users`.`id` = 1
+          ")
+        end
+      end
+            
+      describe 'when the relation is a selection' do
+        before do
+          @update = Update.new(
+            @relation.select(@relation[:id].eq(1)),
+            @relation[:name] => "nick"
+          )
+        end
+        
+        it 'manufactures sql updating a selection relation' do
+          @update.to_sql.should be_like("
+            UPDATE `users`
+            SET `users`.`name` = 'nick'
+            WHERE `users`.`id` = 1
+          ")
+        end
+      end
+    end
+    
+    describe '#call' do
+      before do
+        @update = Update.new(@relation, @relation[:name] => "nick")
+      end
+      
+      it 'executes an update on the connection' do
+        mock(connection = Object.new).update(@update.to_sql)
+        @update.call(connection)
+      end
+    end
+    
+  end
+end
+\ No newline at end of file