Upgraded to Rails 2.1. This can have wide ranging consequences, so please help track down any issues introduced by the upgrade. Requires environment.rb modifications.

Changes you will need to make:

 * In your environment.rb, you will need to update references to a few files per environment.rb.tmpl
 * In your environment.rb, you will need to specify the local time zone of the computer that is running your Tracks install.

Other notes on my changes:

 * Modified our code to take advantage of Rails 2.1's slick time zone support.
 * Upgraded will_paginate for compatibility
 * Hacked the Selenium on Rails plugin, which has not been updated in some time and does not support Rails 2.1
 * Verified that all tests pass on my machine, including Selenium tests -- I'd like confirmation from others, too.

vendor/rails/actionpack/test/controller/render_test.rb

@@ -1,5 +1,5 @@
-require File.dirname(__FILE__) + '/../abstract_unit'
-require File.dirname(__FILE__) + '/fake_models'
+require 'abstract_unit'
+require 'controller/fake_models'
 
 module Fun
   class GamesController < ActionController::Base
@@ -20,6 +20,18 @@ class TestController < ActionController::Base
     render :template => "test/hello_world"
   end
 
+  def render_hello_world_with_forward_slash
+    render :template => "/test/hello_world"
+  end
+  
+  def render_template_in_top_directory
+    render :template => 'shared'
+  end
+  
+  def render_template_in_top_directory_with_slash
+    render :template => '/shared'
+  end
+
   def render_hello_world_from_variable
     @person = "david"
     render :text => "hello #{@person}"
@@ -57,6 +69,20 @@ class TestController < ActionController::Base
     render :text => "hello world", :status => 404
   end
 
+  def render_custom_code_rjs
+    render :update, :status => 404 do |page|
+      page.replace :foo, :partial => 'partial'
+    end
+  end
+
+  def render_text_with_nil
+    render :text => nil
+  end
+
+  def render_text_with_false
+    render :text => false
+  end
+
   def render_nothing_with_appendix
     render :text => "appended"
   end
@@ -74,6 +100,15 @@ class TestController < ActionController::Base
     render :xml => "<blah/>", :content_type => "application/atomsvc+xml"
   end
 
+  def render_line_offset
+    begin
+      render :inline => '<% raise %>', :locals => {:foo => 'bar'}
+    rescue => exc
+    end
+    line = exc.backtrace.first
+    render :text => line
+  end
+
   def heading
     head :ok
   end
@@ -119,14 +154,6 @@ class TestController < ActionController::Base
            :locals => { :local_name => name }
   end
 
-  def accessing_local_assigns_in_inline_template_with_string_keys
-    name = params[:local_name]
-    ActionView::Base.local_assigns_support_string_keys = true
-    render :inline => "<%= 'Goodbye, ' + local_name %>",
-           :locals => { "local_name" => name }
-    ActionView::Base.local_assigns_support_string_keys = false
-  end
-
   def formatted_html_erb
   end
 
@@ -213,6 +240,30 @@ class RenderTest < Test::Unit::TestCase
     assert_template "test/hello_world"
   end
 
+  def test_line_offset
+    get :render_line_offset
+    line = @response.body
+    assert(line =~ %r{:(\d+):})
+    assert_equal "1", $1
+  end
+
+  def test_render_with_forward_slash
+    get :render_hello_world_with_forward_slash
+    assert_template "test/hello_world"
+  end
+  
+  def test_render_in_top_directory
+    get :render_template_in_top_directory
+    assert_template "shared"
+    assert_equal "Elastica", @response.body
+  end
+  
+  def test_render_in_top_directory_with_slash
+    get :render_template_in_top_directory_with_slash
+    assert_template "shared"
+    assert_equal "Elastica", @response.body
+  end
+
   def test_render_from_variable
     get :render_hello_world_from_variable
     assert_equal "hello david", @response.body
@@ -263,6 +314,23 @@ class RenderTest < Test::Unit::TestCase
     assert_equal 'hello world', @response.body
   end
 
+  def test_render_custom_code_rjs
+    get :render_custom_code_rjs
+    assert_response 404
+    assert_equal %(Element.replace("foo", "partial html");), @response.body
+  end
+
+  def test_render_text_with_nil
+    get :render_text_with_nil
+    assert_response 200
+    assert_equal '', @response.body
+  end
+
+  def test_render_text_with_false
+    get :render_text_with_false
+    assert_equal 'false', @response.body
+  end
+
   def test_render_nothing_with_appendix
     get :render_nothing_with_appendix
     assert_response 200
@@ -343,11 +411,6 @@ class RenderTest < Test::Unit::TestCase
     assert_equal "Goodbye, Local David", @response.body
   end
 
-  def test_accessing_local_assigns_in_inline_template_with_string_keys
-    get :accessing_local_assigns_in_inline_template_with_string_keys, :local_name => "Local David"
-    assert_equal "Goodbye, Local David", @response.body
-  end
-
   def test_render_200_should_set_etag
     get :render_hello_world_from_variable
     assert_equal etag_for("hello david"), @response.headers['ETag']