replace deprecated RAILS_ENV and RAILS_ROOT with Rail.env and Rails.root

lib/paperclip.rb

@@ -36,8 +36,8 @@ require 'paperclip/storage'
 require 'paperclip/interpolations'
 require 'paperclip/style'
 require 'paperclip/attachment'
-if defined? RAILS_ROOT
-  Dir.glob(File.join(File.expand_path(RAILS_ROOT), "lib", "paperclip_processors", "*.rb")).each do |processor|
+if defined?(Rails.root) && Rails.root
+  Dir.glob(File.join(File.expand_path(Rails.root), "lib", "paperclip_processors", "*.rb")).each do |processor|
     require processor
   end
 end

lib/paperclip/interpolations.rb

@@ -51,14 +51,14 @@ module Paperclip
       attachment.instance_read(:updated_at).to_s
     end
 
-    # Returns the RAILS_ROOT constant.
+    # Returns the Rails.root constant.
     def rails_root attachment, style_name
-      RAILS_ROOT
+      Rails.root
     end
 
-    # Returns the RAILS_ENV constant.
+    # Returns the Rails.env constant.
     def rails_env attachment, style_name
-      RAILS_ENV
+      Rails.env
     end
 
     # Returns the underscored, pluralized version of the class name.

lib/paperclip/storage.rb

@@ -174,7 +174,7 @@ module Paperclip
 
       def parse_credentials creds
         creds = find_credentials(creds).stringify_keys
-        (creds[RAILS_ENV] || creds).symbolize_keys
+        (creds[Rails.env] || creds).symbolize_keys
       end
       
       def exists?(style = default_style)

test/attachment_test.rb

@@ -11,7 +11,7 @@ class AttachmentTest < Test::Unit::TestCase
     @model = @attachment.instance
     @model.id = 1234
     @model.avatar_file_name = "fake.jpg"
-    assert_equal "#{RAILS_ROOT}/public/fake_models/1234/fake", @attachment.path
+    assert_equal "#{Rails.root}/public/fake_models/1234/fake", @attachment.path
   end
 
   context "Attachment default_options" do
@@ -106,12 +106,11 @@ class AttachmentTest < Test::Unit::TestCase
       @dummy.stubs(:id).returns(@id)
       @file = StringIO.new(".")
       @dummy.avatar = @file
+      Rails = stub('Rails', :root => @rails_env)
     end
 
     should "return the proper path" do
-      temporary_rails_env(@rails_env) {
       assert_equal "#{@rails_env}/#{@id}.png", @dummy.avatar.path
-      }
     end
   end
 

test/helper.rb

@@ -17,8 +17,21 @@ rescue LoadError
 end
 
 ROOT = File.join(File.dirname(__FILE__), '..')
-RAILS_ROOT = ROOT
-RAILS_ENV  = "test"
+
+def silence_warnings
+  old_verbose, $VERBOSE = $VERBOSE, nil
+  yield
+ensure
+  $VERBOSE = old_verbose
+end
+
+class Test::Unit::TestCase
+  def setup
+    silence_warnings do
+      Object.const_set(:Rails, stub('Rails', :root => ROOT, :env => 'test'))
+    end
+  end
+end
 
 $LOAD_PATH << File.join(ROOT, 'lib')
 $LOAD_PATH << File.join(ROOT, 'lib', 'paperclip')
@@ -70,17 +83,6 @@ def rebuild_class options = {}
   end
 end
 
-def temporary_rails_env(new_env)
-  old_env = Object.const_defined?("RAILS_ENV") ? RAILS_ENV : nil
-  silence_warnings do
-    Object.const_set("RAILS_ENV", new_env)
-  end
-  yield
-  silence_warnings do
-    Object.const_set("RAILS_ENV", old_env)
-  end
-end
-
 class FakeModel
   attr_accessor :avatar_file_name,
                 :avatar_file_size,

test/interpolations_test.rb

@@ -11,12 +11,12 @@ class InterpolationsTest < Test::Unit::TestCase
     end
   end
 
-  should "return the RAILS_ROOT" do
-    assert_equal RAILS_ROOT, Paperclip::Interpolations.rails_root(:attachment, :style)
+  should "return the Rails.root" do
+    assert_equal Rails.root, Paperclip::Interpolations.rails_root(:attachment, :style)
   end
 
-  should "return the RAILS_ENV" do
-    assert_equal RAILS_ENV, Paperclip::Interpolations.rails_env(:attachment, :style)
+  should "return the Rails.env" do
+    assert_equal Rails.env, Paperclip::Interpolations.rails_env(:attachment, :style)
   end
 
   should "return the class of the Interpolations module when called with no params" do

test/storage_test.rb

@@ -4,7 +4,7 @@ require 'aws/s3'
 class StorageTest < Test::Unit::TestCase
   def rails_env(env)
     silence_warnings do
-      Object.const_set(:RAILS_ENV, env)
+      Object.const_set(:Rails, stub('Rails', :env => env))
     end
   end
 
@@ -17,12 +17,6 @@ class StorageTest < Test::Unit::TestCase
 
       @dummy = Dummy.new
       @avatar = @dummy.avatar
-
-      @current_env = RAILS_ENV
-    end
-
-    teardown do
-      rails_env(@current_env)
     end
 
     should "get the correct credentials when RAILS_ENV is production" do
@@ -133,11 +127,8 @@ class StorageTest < Test::Unit::TestCase
                       :development  => { :bucket => "dev_bucket" }
                     }
       @dummy = Dummy.new
-      @old_env = RAILS_ENV
     end
 
-    teardown{ rails_env(@old_env) }
-
     should "get the right bucket in production" do
       rails_env("production")
       assert_equal "prod_bucket", @dummy.avatar.bucket_name