Anchor DateTimeTest to fixed DateTime instead of a variable value based on...

Anchor DateTimeTest to fixed DateTime instead of a variable value based on Time.now#advance#to_datetime. Works around issue on 64-bit platforms with Ruby's Time#to_datetime respecting fractional seconds, and database adapters not respecting them for DateTimes, throwing off before-and-after-save equality test. References #10080, #10073

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8326 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *2.0.0* (December 6th, 2007)
 
+* Anchor DateTimeTest to fixed DateTime instead of a variable value based on Time.now#advance#to_datetime, so that this test passes on 64-bit platforms running Ruby 1.8.6+ [Geoff Buesing]
+
 * Fixed that the Query Cache should just be ignored if the database is misconfigured (so that the "About your applications environment" works even before the database has been created) [DHH]
 
 * Fixed that the truncation of strings longer than 50 chars should use inspect so newlines etc are escaped #10385 [norbert]

activerecord/test/date_time_test.rb

@@ -4,13 +4,15 @@
 
 class DateTimeTest < Test::Unit::TestCase
   def test_saves_both_date_and_time
-    now = 200.years.ago.to_datetime
+    time_values = [1807, 2, 10, 15, 30, 45]
+    now = DateTime.civil(*time_values)
 
     task = Task.new
     task.starting = now
     task.save!
-
-    assert_equal now, Task.find(task.id).starting.to_datetime
+    
+    # check against Time.local_time, since some platforms will return a Time instead of a DateTime
+    assert_equal Time.local_time(*time_values), Task.find(task.id).starting
   end
 
   def test_assign_empty_date_time