Added Object#send_at(time, method) method to compliment Object#send_l…

…ater

lib/delayed/message_sending.rb

@@ -4,6 +4,10 @@ def send_later(method, *args)
       Delayed::Job.enqueue Delayed::PerformableMethod.new(self, method.to_sym, args)
     end
 
+    def send_at(time, method, *args)
+      Delayed::Job.enqueue Delayed::PerformableMethod.new(self, method.to_sym, args), 0, time
+    end
+
     module ClassMethods
       def handle_asynchronously(method)
         without_name = "#{method}_without_send_later"

spec/delayed_method_spec.rb

@@ -44,11 +44,22 @@ def read(story)
     RandomRubyObject.new.respond_to?(:send_later)
 
   end
+
+  it "should respond_to :send_at method" do
+
+    RandomRubyObject.new.respond_to?(:send_at)
+
+  end
+
 
   it "should raise a ArgumentError if send_later is called but the target method doesn't exist" do
     lambda { RandomRubyObject.new.send_later(:method_that_deos_not_exist) }.should raise_error(NoMethodError)
   end
 
+  it "should raise a ArgumentError if send_at is called but the target method doesn't exist" do
+    lambda { RandomRubyObject.new.send_at(:method_that_deos_not_exist, Time.at(1267012917)) }.should raise_error(NoMethodError)
+  end
+
   it "should add a new entry to the job table when send_later is called on it" do
     Delayed::Job.count.should == 0
 
@@ -64,13 +75,35 @@ def read(story)
 
     Delayed::Job.count.should == 1
   end
+
+  it "should add a new entry to the job table when send_at is called on it" do
+    Delayed::Job.count.should == 0
+
+    RandomRubyObject.new.send_at(Time.at(1267012917), :to_s)
+
+    Delayed::Job.count.should == 1
+  end
 
-  it "should run get the original method executed when the job is performed" do
+  it "should run get the original method executed when the send later job is performed" do
 
     RandomRubyObject.new.send_later(:say_hello)
 
     Delayed::Job.count.should == 1
   end
+
+  it "should run get the original method executed when the send at job is performed" do
+
+    RandomRubyObject.new.send_at(Time.at(1267012917), :say_hello)
+
+    Delayed::Job.count.should == 1
+  end
+
+  it "should schedule original method executed when the send at job is performed" do
+
+    RandomRubyObject.new.send_at(Time.at(1267012917), :say_hello)
+
+    Delayed::Job.last.run_at.should == Time.at(1267012917)
+  end
 
   it "should ignore ActiveRecord::RecordNotFound errors because they are permanent" do