From 5a036457620b7fb22027dc4f0c399871db6ed0c3 Mon Sep 17 00:00:00 2001
From: Pratik Naik <pratiknaik@gmail.com>
Date: Thu, 21 May 2009 03:04:17 +0200
Subject: Allow Module#depends_on to accept multiple modules

---
 actionpack/lib/action_controller/base/verification.rb |  5 +----
 activesupport/lib/active_support/dependency_module.rb | 10 ++++++----
 activesupport/test/dependency_module_test.rb          | 11 +++++++++++
 3 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/actionpack/lib/action_controller/base/verification.rb b/actionpack/lib/action_controller/base/verification.rb
index a513e9f40c..3fa5a105b1 100644
--- a/actionpack/lib/action_controller/base/verification.rb
+++ b/actionpack/lib/action_controller/base/verification.rb
@@ -4,10 +4,7 @@ module ActionController #:nodoc:
 
     # TODO : Remove the defined? check when new base is the main base
     if defined?(ActionController::Http)
-      depends_on AbstractController::Callbacks
-      depends_on Session
-      depends_on Flash
-      depends_on Renderer
+      depends_on AbstractController::Callbacks, Session, Flash, Renderer
     end
 
     # This module provides a class-level method for specifying that certain
diff --git a/activesupport/lib/active_support/dependency_module.rb b/activesupport/lib/active_support/dependency_module.rb
index 8c202acc8f..9872b9654b 100644
--- a/activesupport/lib/active_support/dependency_module.rb
+++ b/activesupport/lib/active_support/dependency_module.rb
@@ -16,10 +16,12 @@ module ActiveSupport
       end
     end
 
-    def depends_on(mod)
-      return if self < mod
-      @_dependencies ||= []
-      @_dependencies << mod
+    def depends_on(*mods)
+      mods.each do |mod|
+        next if self < mod
+        @_dependencies ||= []
+        @_dependencies << mod
+      end
     end
   end
 end
diff --git a/activesupport/test/dependency_module_test.rb b/activesupport/test/dependency_module_test.rb
index 07090d15a1..be7db0fa7b 100644
--- a/activesupport/test/dependency_module_test.rb
+++ b/activesupport/test/dependency_module_test.rb
@@ -42,6 +42,12 @@ class DependencyModuleTest < Test::Unit::TestCase
     end
   end
 
+  module Foo
+    extend ActiveSupport::DependencyModule
+
+    depends_on Bar, Baz
+  end
+
   def setup
     @klass = Class.new
   end
@@ -74,4 +80,9 @@ class DependencyModuleTest < Test::Unit::TestCase
     assert_equal "baz", @klass.baz
     assert_equal [DependencyModuleTest::Bar, DependencyModuleTest::Baz], @klass.included_modules[0..1]
   end
+
+  def test_depends_on_with_multiple_modules
+    @klass.send(:include, Foo)
+    assert_equal [DependencyModuleTest::Foo, DependencyModuleTest::Bar, DependencyModuleTest::Baz], @klass.included_modules[0..2]
+  end
 end
-- 
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