Mock Time.now for more accurate Touch mixin tests. Closes #6213.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5106 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
+* Mock Time.now for more accurate Touch mixin tests.  #6213 [Dan Peterson]
+
 * Improve yaml fixtures error reporting.  #6205 [Bruce Williams]
 
 * Rename AR::Base#quote so people can use that name in their models. #3628 [Koz]

activerecord/test/mixin_test.rb

@@ -4,6 +4,23 @@
 require 'active_record/acts/nested_set'
 require 'fixtures/mixin'
 
+# Let us control what Time.now returns for the TouchTest suite
+class Time
+  @@forced_now_time = nil
+  cattr_accessor :forced_now_time
+  
+  class << self
+    def now_with_forcing
+      if @@forced_now_time
+        @@forced_now_time
+      else
+        now_without_forcing
+      end
+    end
+    alias_method_chain :now, :forcing
+  end
+end
+
 class ListTest < Test::Unit::TestCase
   fixtures :mixins
 
@@ -304,6 +321,23 @@ def test_roots
 
 class TouchTest < Test::Unit::TestCase
   fixtures :mixins
+  
+  def setup
+    Time.forced_now_time = Time.now
+  end
+  
+  def teardown
+    Time.forced_now_time = nil
+  end
+
+  def test_time_mocking
+    five_minutes_ago = 5.minutes.ago
+    Time.forced_now_time = five_minutes_ago
+    assert_equal five_minutes_ago, Time.now
+    
+    Time.forced_now_time = nil
+    assert_not_equal five_minutes_ago, Time.now
+  end
 
   def test_update
     stamped = Mixin.new
@@ -311,14 +345,14 @@ def test_update
     assert_nil stamped.updated_at
     assert_nil stamped.created_at
     stamped.save
-    assert_not_nil stamped.updated_at
-    assert_not_nil stamped.created_at
+    assert_equal Time.now, stamped.updated_at
+    assert_equal Time.now, stamped.created_at
   end
 
   def test_create
-    @obj = Mixin.create
-    assert_not_nil @obj.updated_at
-    assert_not_nil @obj.created_at
+    obj = Mixin.create
+    assert_equal Time.now, obj.updated_at
+    assert_equal Time.now, obj.created_at
   end
 
   def test_many_updates
@@ -327,16 +361,16 @@ def test_many_updates
     assert_nil stamped.updated_at
     assert_nil stamped.created_at
     stamped.save
-    assert_not_nil stamped.created_at
-    assert_not_nil stamped.updated_at
+    assert_equal Time.now, stamped.created_at
+    assert_equal Time.now, stamped.updated_at
 
     old_updated_at = stamped.updated_at
 
-    sleep 1
+    Time.forced_now_time = 5.minutes.from_now
     stamped.save
-    assert_not_equal stamped.created_at, stamped.updated_at
-    assert_not_equal old_updated_at, stamped.updated_at
 
+    assert_equal Time.now, stamped.updated_at
+    assert_equal old_updated_at, stamped.created_at
   end
 
   def test_create_turned_off