We can't work with isolated attachment objects anymore

Gemfile

@@ -6,3 +6,4 @@ gem 'jruby-openssl', :platform => :jruby
 gem 'activerecord-jdbcsqlite3-adapter', :platform => :jruby
 
 gem 'pry', :platform => :ruby
+gem 'pry-byebug', :platform => :ruby

lib/paperclip/callbacks.rb

@@ -7,7 +7,7 @@ module Paperclip
 
     module Defining
       def define_paperclip_callbacks(*callbacks)
-        define_callbacks *[callbacks, {:terminator => "result == false"}].flatten
+        define_callbacks(*[callbacks, {:terminator => "result == false"}].flatten)
         callbacks.each do |callback|
           eval <<-end_callbacks
             def before_#{callback}(*args, &blk)

test/attachment_test.rb

@@ -165,7 +165,7 @@ class AttachmentTest < Test::Unit::TestCase
                                            :default_style => 'default style',
                                            :url_generator => mock_url_generator_builder)
 
-    attachment_json = attachment.as_json
+    attachment.as_json
     assert mock_url_generator_builder.has_generated_url_with_style_name?('default style')
   end
 
@@ -983,19 +983,16 @@ class AttachmentTest < Test::Unit::TestCase
         :path => ":rails_root/:attachment/:class/:style/:id/:basename.:extension"
       })
       FileUtils.rm_rf("tmp")
-      rebuild_model
+      rebuild_model :styles => { :large  => ["400x400", :jpg],
+                             :medium => ["100x100", :jpg],
+                             :small => ["32x32#", :jpg]},
+                    :default_style => :small
       @instance = Dummy.new
       @instance.stubs(:id).returns 123
-
       @file = File.new(fixture_file("uppercase.PNG"), 'rb')
 
-      styles = {:styles => { :large  => ["400x400", :jpg],
-                             :medium => ["100x100", :jpg],
-                             :small => ["32x32#", :jpg]},
-                :default_style => :small}
-      @attachment = Paperclip::Attachment.new(:avatar,
-                                              @instance,
-                                              styles)
+      @attachment = @instance.avatar
+
       now = Time.now
       Time.stubs(:now).returns(now)
       @attachment.assign(@file)
@@ -1027,7 +1024,8 @@ class AttachmentTest < Test::Unit::TestCase
       rebuild_model
       @instance = Dummy.new
       @instance.stubs(:id).returns 123
-      @attachment = Paperclip::Attachment.new(:avatar, @instance)
+      # @attachment = Paperclip::Attachment.new(:avatar, @instance)
+      @attachment = @instance.avatar
       @file = File.new(fixture_file("5k.png"), 'rb')
     end
 
@@ -1045,7 +1043,7 @@ class AttachmentTest < Test::Unit::TestCase
 
     should 'clear out the previous assignment when assigned nil' do
       @attachment.assign(@file)
-      original_file = @attachment.queued_for_write[:original]
+      @attachment.queued_for_write[:original]
       @attachment.assign(nil)
       assert_nil @attachment.queued_for_write[:original]
     end
@@ -1093,12 +1091,12 @@ class AttachmentTest < Test::Unit::TestCase
 
       context "when expecting three styles" do
         setup do
-          styles = {:styles => { :large  => ["400x400", :png],
-                                 :medium => ["100x100", :gif],
-                                 :small => ["32x32#", :jpg]}}
-          @attachment = Paperclip::Attachment.new(:avatar,
-                                                  @instance,
-                                                  styles)
+          rebuild_model :styles => {
+            :large  => ["400x400", :png],
+            :medium => ["100x100", :gif],
+            :small => ["32x32#", :jpg]
+          }
+          @attachment = @instance.avatar
         end
 
         context "and assigned a file" do
@@ -1129,7 +1127,7 @@ class AttachmentTest < Test::Unit::TestCase
                [:small, 32, 32, "JPEG"]].each do |style|
                 cmd = %Q[identify -format "%w %h %b %m" "#{@attachment.path(style.first)}"]
                 out = `#{cmd}`
-                width, height, size, format = out.split(" ")
+                width, height, _size, format = out.split(" ")
                 assert_equal style[1].to_s, width.to_s
                 assert_equal style[2].to_s, height.to_s
                 assert_equal style[3].to_s, format.to_s

test/io_adapters/http_url_proxy_adapter_test.rb

@@ -84,7 +84,7 @@ class HttpUrlProxyAdapterTest < Test::Unit::TestCase
     teardown do
       begin
         @subject.close
-      rescue Exception => e
+      rescue Exception
         binding.pry
         true
       end
@@ -95,7 +95,7 @@ class HttpUrlProxyAdapterTest < Test::Unit::TestCase
     end
 
     should "not generate paths that include restricted characters" do
-      assert_no_match /:/, @subject.path
+      assert_no_match(/:/, @subject.path)
     end
   end