start work on scheduler

.gitignore

@@ -1,2 +1,4 @@
 *~
+.loadpath
+.project
 

classes/Scheduler.rb

@@ -0,0 +1,32 @@
+require 'singleton'
+
+class Scheduler
+  include Singleton
+
+  WEEKLY = [ 7 ]
+
+  def schedule(parameters, to_produce)
+    dates = []
+
+    if parameters[:start]
+      current = parameters[:start]
+
+      1.upto(to_produce) do |i|
+        interval = parameters[:interval].shift
+
+        case interval.class.to_s
+          when 'Symbol'
+
+          when 'Fixnum'
+        end
+
+        dates << current
+
+        current += interval
+        parameters[:interval] << interval
+      end
+    end
+
+    dates
+  end
+end

tests/TestScheduler.rb

@@ -0,0 +1,35 @@
+#!/usr/bin/ruby
+
+require 'rubygems'
+require 'test/unit'
+require File.dirname(__FILE__) + '/../classes/Scheduler.rb'
+
+class TestScheduler < Test::Unit::TestCase
+  def setup
+    @scheduler = Scheduler.instance
+  end
+
+  def test_schedule
+    [
+      [
+        {
+          :start => DateTime.parse('2010-01-01'),
+          :interval => Scheduler::WEEKLY
+        },
+        2,
+        [ DateTime.parse('2010-01-01'), DateTime.parse('2010-01-08') ]
+      ],
+      [
+        {
+          :start => DateTime.parse('2010-01-01'),
+          :interval => [ :mondays ]
+        },
+        2,
+        [ DateTime.parse('2010-01-04'), DateTime.parse('2010-01-11') ]
+      ],
+    ].each do |parameters, to_produce, expected_results|
+      assert_equal expected_results, @scheduler.schedule(parameters, to_produce)
+    end
+  end
+
+end