Merge branch 'master' into v4.2

8271d89c · Tute Costa · 67580ee3 · db1ebd13 · 8271d89c · 8271d89c
Commit 8271d89c authored Jun 05, 2015 by Tute Costa
55 changed files
--- a/.hound.yml
+++ b/.hound.yml
--- a/.rubocop.yml
+++ b/.rubocop.yml
+inherit_from: .hound.yml
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,20 +4,24 @@ rvm:
  - rbx-2
  - 2.0.0
  - 2.1.1
+  - 2.2.2
 install:
  - "travis_retry bundle install"
-before_script: "sudo ntpdate -ub ntp.ubuntu.com pool.ntp.org; true"
 script: "bundle exec rake clean spec cucumber"
 gemfile:
  - gemfiles/3.2.gemfile
  - gemfiles/4.0.gemfile
  - gemfiles/4.1.gemfile
+  - gemfiles/4.2.gemfile
 matrix:
  fast_finish: true
  allow_failures:
    - rvm: jruby-19mode
    - rvm: rbx-2
+sudo: false
+cache: bundler
--- a/Appraisals
+++ b/Appraisals
@@ -14,6 +14,6 @@ appraise "4.1" do
 end
 appraise "4.2" do
-  gem "rails", "~> 4.2.0.rc2"
+  gem "rails", "~> 4.2.0"
  gem "paperclip", :path => "../"
 end
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -6,7 +6,7 @@ We love pull requests. Here's a quick guide:
 1. Fork the repo.
 2. Run the tests. We only take pull requests with passing tests, and it's great
-to know that you have a clean slate: `bundle && rake`
+to know that you have a clean slate: `bundle && bundle exec rake`
 3. Add a test for your change. Only refactoring and documentation changes
 require no new tests. If you are adding functionality or fixing a bug, we need
@@ -43,14 +43,14 @@ will be asked to rewrite them before we'll accept.
 ### Bootstrapping your test suite:
    bundle install
-    bundle exec rake appraisal:install
+    bundle exec appraisal install
 This will install all the required gems that requires to test against each
 version of Rails, which defined in `gemfiles/*.gemfile`.
 ### To run a full test suite:
-    bundle exec rake
+    bundle exec appraisal rake
 This will run RSpec and Cucumber against all version of Rails

--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source "https://rubygems.org"
 gemspec
-gem 'sqlite3', '1.3.8', :platforms => :ruby
+gem 'sqlite3', '~>1.3.8', :platforms => :ruby
 gem 'jruby-openssl', :platforms => :jruby
 gem 'activerecord-jdbcsqlite3-adapter', :platforms => :jruby
@@ -17,4 +17,5 @@ gem 'pry'
 group :development, :test do
  gem 'mime-types', '~> 1.16'
  gem 'builder'
+  gem 'rubocop', require: false
 end
--- a/LICENSE
+++ b/LICENSE
@@ -3,7 +3,7 @@ LICENSE
 The MIT License
-Copyright (c) 2008-2014 Jon Yurek and thoughtbot, inc.
+Copyright (c) 2008-2015 Jon Yurek and thoughtbot, inc.
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

--- a/NEWS
+++ b/NEWS
@@ -12,7 +12,7 @@ New in 4.2.1:
 * Improvement: Better escaping for characters in URLs
 * Improvement: Honor `fog_credentials[:scheme]`
 * Improvement: Also look for custom processors in lib/paperclip
-* Improvement: id partitioning for string IDs works liks integer id
+* Improvement: id partitioning for string IDs works like integer id
 * Improvement: Can pass options to DB adapters in migrations
 * Improvement: Update expiring_url creation for later versions of fog
 * Improvement: `path` can be a Proc in S3 attachments

--- a/README.md
+++ b/README.md
--- a/RELEASING.md
+++ b/RELEASING.md
+Releasing paperclip
+1. Update `lib/paperclip/version.rb` file accordingly.
+2. Update `NEWS` to reflect the changes since last release.
+3. Commit changes. There shouldn’t be code changes, and thus CI doesn’t need to
+   run, you can then add “[ci skip]” to the commit message.
+4. Tag the release: `git tag -m 'vVERSION' vVERSION`
+5. Push changes: `git push --tags`
+6. Build and publish the gem:
+   ```bash
+   gem build paperclip.gemspec
+   gem push paperclip-VERSION.gem
+   ```
+7. Announce the new release, making sure to say “thank you” to the contributors
+   who helped shape this version.
--- a/RUNNING_TESTS.md
+++ b/RUNNING_TESTS.md
-Running Tests
-=============
-Please see `CONTRIBUTING.md` in "Running Tests" section for more information.
--- a/Rakefile
+++ b/Rakefile
@@ -11,7 +11,7 @@ task :all do |t|
  if ENV['BUNDLE_GEMFILE']
    exec('rake spec cucumber')
  else
-    exec("rm gemfiles/*.lock")
+    exec("rm -f gemfiles/*.lock")
    Rake::Task["appraisal:gemfiles"].execute
    Rake::Task["appraisal:install"].execute
    exec('rake appraisal')

--- a/features/basic_integration.feature
+++ b/features/basic_integration.feature
@@ -12,17 +12,20 @@ Feature: Rails integration
  Scenario: Configure defaults for all attachments through Railtie
    Given I add this snippet to config/application.rb:
      """
-      config.paperclip_defaults = {:url => "/paperclip/custom/:attachment/:style/:filename"}
+      config.paperclip_defaults = {
+        :url => "/paperclip/custom/:attachment/:style/:filename",
+        :validate_media_type => false
+      }
      """
    And I attach :attachment
    And I start the rails application
    When I go to the new user page
    And I fill in "Name" with "something"
-    And I attach the file "spec/support/fixtures/5k.png" to "Attachment"
+    And I attach the file "spec/support/fixtures/animated.unknown" to "Attachment"
    And I press "Submit"
    Then I should see "Name: something"
-    And I should see an image with a path of "/paperclip/custom/attachments/original/5k.png"
+    And I should see an image with a path of "/paperclip/custom/attachments/original/animated.unknown"
-    And the file at "/paperclip/custom/attachments/original/5k.png" should be the same as "spec/support/fixtures/5k.png"
+    And the file at "/paperclip/custom/attachments/original/animated.unknown" should be the same as "spec/support/fixtures/animated.unknown"
  Scenario: Add custom processors
    Given I add a "test" processor in "lib/paperclip"

--- a/features/step_definitions/attachment_steps.rb
+++ b/features/step_definitions/attachment_steps.rb
@@ -49,7 +49,13 @@ end
 Then /^the attachment should have the same content type as the fixture "([^"]*)"$/ do |filename|
  in_current_dir do
-    require 'mime/types'
+    begin
+      # Use mime/types/columnar if available, for reduced memory usage
+      require "mime/types/columnar"
+    rescue LoadError
+      require "mime/types"
+    end
    attachment_content_type = `bundle exec #{runner_command} "puts User.last.attachment_content_type"`.strip
    attachment_content_type.should == MIME::Types.type_for(filename).first.content_type
  end

--- a/gemfiles/3.2.gemfile
+++ b/gemfiles/3.2.gemfile
@@ -2,7 +2,7 @@
 source "https://rubygems.org"
-gem "sqlite3", "1.3.8", :platforms => :ruby
+gem "sqlite3", "~>1.3.8", :platforms => :ruby
 gem "jruby-openssl", :platforms => :jruby
 gem "activerecord-jdbcsqlite3-adapter", :platforms => :jruby
 gem "rubysl", :platforms => :rbx
@@ -14,6 +14,7 @@ gem "paperclip", :path => "../"
 group :development, :test do
  gem "mime-types", "~> 1.16"
  gem "builder"
+  gem "rubocop", :require => false
 end
 gemspec :path => "../"
--- a/gemfiles/4.0.gemfile
+++ b/gemfiles/4.0.gemfile
@@ -2,7 +2,7 @@
 source "https://rubygems.org"
-gem "sqlite3", "1.3.8", :platforms => :ruby
+gem "sqlite3", "~>1.3.8", :platforms => :ruby
 gem "jruby-openssl", :platforms => :jruby
 gem "activerecord-jdbcsqlite3-adapter", :platforms => :jruby
 gem "rubysl", :platforms => :rbx
@@ -14,6 +14,7 @@ gem "paperclip", :path => "../"
 group :development, :test do
  gem "mime-types", "~> 1.16"
  gem "builder"
+  gem "rubocop", :require => false
 end
 gemspec :path => "../"
--- a/gemfiles/4.1.gemfile
+++ b/gemfiles/4.1.gemfile
@@ -2,7 +2,7 @@
 source "https://rubygems.org"
-gem "sqlite3", "1.3.8", :platforms => :ruby
+gem "sqlite3", "~>1.3.8", :platforms => :ruby
 gem "jruby-openssl", :platforms => :jruby
 gem "activerecord-jdbcsqlite3-adapter", :platforms => :jruby
 gem "rubysl", :platforms => :rbx
@@ -14,6 +14,7 @@ gem "paperclip", :path => "../"
 group :development, :test do
  gem "mime-types", "~> 1.16"
  gem "builder"
+  gem "rubocop", :require => false
 end
 gemspec :path => "../"
--- a/gemfiles/4.2.gemfile
+++ b/gemfiles/4.2.gemfile
@@ -2,18 +2,19 @@
 source "https://rubygems.org"
-gem "sqlite3", "1.3.8", :platforms => :ruby
+gem "sqlite3", "~>1.3.8", :platforms => :ruby
 gem "jruby-openssl", :platforms => :jruby
 gem "activerecord-jdbcsqlite3-adapter", :platforms => :jruby
 gem "rubysl", :platforms => :rbx
 gem "racc", :platforms => :rbx
 gem "pry"
-gem "rails", "~> 4.2.0.rc2"
+gem "rails", "~> 4.2.0"
 gem "paperclip", :path => "../"
 group :development, :test do
  gem "mime-types", "~> 1.16"
  gem "builder"
+  gem "rubocop", :require => false
 end
 gemspec :path => "../"
--- a/lib/paperclip.rb
+++ b/lib/paperclip.rb
@@ -55,7 +55,17 @@ require 'paperclip/helpers'
 require 'paperclip/has_attached_file'
 require 'paperclip/attachment_registry'
 require 'paperclip/filename_cleaner'
-require 'mime/types'
+require 'paperclip/rails_environment'
+begin
+  # Use mime/types/columnar if available, for reduced memory usage
+  require "mime/types/columnar"
+rescue LoadError
+  require "mime/types"
+end
+require 'mimemagic'
+require 'mimemagic/overlay'
 require 'logger'
 require 'cocaine'

--- a/lib/paperclip/attachment.rb
+++ b/lib/paperclip/attachment.rb
@@ -137,6 +137,8 @@ module Paperclip
    # +#for(style_name, options_hash)+
    def url(style_name = default_style, options = {})
+      return nil if @instance.new_record?
      if options == true || options == false # Backwards compatibility.
        @url_generator.for(style_name, default_options.merge(:timestamp => options))
      else
@@ -528,7 +530,7 @@ module Paperclip
        @queued_for_write[name] = Paperclip.io_adapters.for(@queued_for_write[name])
        unadapted_file.close if unadapted_file.respond_to?(:close)
        @queued_for_write[name]
-      rescue Paperclip::Error => e
+      rescue Paperclip::Errors::NotIdentifiedByImageMagickError => e
        log("An error was received while processing: #{e.inspect}")
        (@errors[:processing] ||= []) << e.message if @options[:whiny]
      ensure

--- a/lib/paperclip/attachment_registry.rb
+++ b/lib/paperclip/attachment_registry.rb
@@ -52,7 +52,7 @@ module Paperclip
    def definitions_for(klass)
      klass.ancestors.each_with_object({}) do |ancestor, inherited_definitions|
-        inherited_definitions.merge! @attachments[ancestor]
+        inherited_definitions.deep_merge! @attachments[ancestor]
      end
    end
  end

--- a/lib/paperclip/content_type_detector.rb
+++ b/lib/paperclip/content_type_detector.rb
@@ -2,7 +2,7 @@ module Paperclip
  class ContentTypeDetector
    # The content-type detection strategy is as follows:
    #
-    # 1. Blank/Empty files: If there's no filename or the file is empty,
+    # 1. Blank/Empty files: If there's no filepath or the file is empty,
    #    provide a sensible default (application/octet-stream or inode/x-empty)
    #
    # 2. Calculated match: Return the first result that is found by both the
@@ -20,8 +20,8 @@ module Paperclip
    EMPTY_TYPE = "inode/x-empty"
    SENSIBLE_DEFAULT = "application/octet-stream"
-    def initialize(filename)
+    def initialize(filepath)
-      @filename = filename
+      @filepath = filepath
    end
    # Returns a String describing the file's content type
@@ -33,32 +33,47 @@ module Paperclip
      elsif calculated_type_matches.any?
        calculated_type_matches.first
      else
-        type_from_file_command || SENSIBLE_DEFAULT
+        type_from_file_contents || SENSIBLE_DEFAULT
      end.to_s
    end
    private
+    def blank_name?
+      @filepath.nil? || @filepath.empty?
+    end
    def empty_file?
-      File.exist?(@filename) && File.size(@filename) == 0
+      File.exist?(@filepath) && File.size(@filepath) == 0
    end
    alias :empty? :empty_file?
-    def blank_name?
+    def calculated_type_matches
-      @filename.nil? || @filename.empty?
+      possible_types.select do |content_type|
+        content_type == type_from_file_contents
+      end
    end
    def possible_types
-      MIME::Types.type_for(@filename).collect(&:content_type)
+      MIME::Types.type_for(@filepath).collect(&:content_type)
    end
-    def calculated_type_matches
+    def type_from_file_contents
-      possible_types.select{|content_type| content_type == type_from_file_command }
+      type_from_mime_magic || type_from_file_command
+    rescue Errno::ENOENT => e
+      Paperclip.log("Error while determining content type: #{e}")
+      SENSIBLE_DEFAULT
+    end
+    def type_from_mime_magic
+      @type_from_mime_magic ||=
+        MimeMagic.by_magic(File.open(@filepath)).try(:type)
    end
    def type_from_file_command
-      @type_from_file_command ||= FileCommandContentTypeDetector.new(@filename).detect
+      @type_from_file_command ||=
+        FileCommandContentTypeDetector.new(@filepath).detect
    end
  end
 end
--- a/lib/paperclip/file_command_content_type_detector.rb
+++ b/lib/paperclip/file_command_content_type_detector.rb
@@ -13,9 +13,9 @@ module Paperclip
    private
    def type_from_file_command
-      type = begin
      # On BSDs, `file` doesn't give a result code of 1 if the file doesn't exist.
-        Paperclip.run("file", "-b --mime :file", :file => @filename)
+      type = begin
+               Paperclip.run("file", "-b --mime :file", file: @filename)
             rescue Cocaine::CommandLineError => e
               Paperclip.log("Error while determining content type: #{e}")
               SENSIBLE_DEFAULT
@@ -26,7 +26,5 @@ module Paperclip
      end
      type.split(/[:;\s]+/)[0]
    end
  end
 end
--- a/lib/paperclip/glue.rb
+++ b/lib/paperclip/glue.rb
@@ -8,7 +8,7 @@ module Paperclip
      base.extend ClassMethods
      base.send :include, Callbacks
      base.send :include, Validators
-      base.send :include, Schema if defined? ActiveRecord
+      base.send :include, Schema
      locale_path = Dir.glob(File.dirname(__FILE__) + "/locales/*.{rb,yml}")
      I18n.load_path += locale_path unless I18n.load_path.include?(locale_path)

--- a/lib/paperclip/has_attached_file.rb
+++ b/lib/paperclip/has_attached_file.rb
@@ -79,7 +79,8 @@ module Paperclip
    end
    def add_required_validations
-      if @options[:validate_media_type] != false
+      options = Paperclip::Attachment.default_options.deep_merge(@options)
+      if options[:validate_media_type] != false
        name = @name
        @klass.validates_media_type_spoof_detection name,
          :if => ->(instance){ instance.send(name).dirty? }

--- a/lib/paperclip/interpolations.rb
+++ b/lib/paperclip/interpolations.rb
@@ -172,7 +172,7 @@ module Paperclip
      when Integer
        ("%09d" % id).scan(/\d{3}/).join("/")
      when String
-        ('%9.9s' % id).tr(" ", "0").scan(/.{3}/).join("/")
+        id.scan(/.{3}/).first(3).join("/")
      else
        nil
      end

--- a/lib/paperclip/io_adapters/abstract_adapter.rb
+++ b/lib/paperclip/io_adapters/abstract_adapter.rb
@@ -6,6 +6,7 @@ module Paperclip
    attr_reader :content_type, :original_filename, :size
    delegate :binmode, :binmode?, :close, :close!, :closed?, :eof?, :path, :rewind, :unlink, :to => :@tempfile
+    alias :length :size
    def fingerprint
      @fingerprint ||= Digest::MD5.file(path).to_s

--- a/lib/paperclip/media_type_spoof_detector.rb
+++ b/lib/paperclip/media_type_spoof_detector.rb
@@ -42,7 +42,7 @@ module Paperclip
    end
    def mapping_override_mismatch?
-      mapped_content_type != calculated_content_type
+      !Array(mapped_content_type).include?(calculated_content_type)
    end

--- a/lib/paperclip/rails_environment.rb
+++ b/lib/paperclip/rails_environment.rb
+module Paperclip
+  class RailsEnvironment
+    def self.get
+      new.get
+    end
+    def get
+      if rails_exists? && rails_environment_exists?
+        Rails.env
+      else
+        nil
+      end
+    end
+    private
+    def rails_exists?
+      Object.const_defined?("Rails")
+    end
+    def rails_environment_exists?
+      Rails.respond_to?(:env)
+    end
+  end
+end
--- a/lib/paperclip/storage/fog.rb
+++ b/lib/paperclip/storage/fog.rb
@@ -141,8 +141,9 @@ module Paperclip
      def expiring_url(time = (Time.now + 3600), style_name = default_style)
        time = convert_time(time)
-        if path(style_name) && directory.files.respond_to?(:get_http_url)
+        http_url_method = "get_#{scheme}_url"
-          expiring_url = directory.files.get_http_url(path(style_name), time)
+        if path(style_name) && directory.files.respond_to?(http_url_method)
+          expiring_url = directory.files.public_send(http_url_method, path(style_name), time)
          if @options[:fog_host]
            expiring_url.gsub!(/#{host_name_for_directory}/, dynamic_fog_host_for_style(style_name))
@@ -156,8 +157,7 @@ module Paperclip
      def parse_credentials(creds)
        creds = find_credentials(creds).stringify_keys
-        env = Object.const_defined?(:Rails) ? Rails.env : nil
+        (creds[RailsEnvironment.get] || creds).symbolize_keys
-        (creds[env] || creds).symbolize_keys
      end
      def copy_to_local_file(style, local_dest_path)

--- a/lib/paperclip/storage/s3.rb
+++ b/lib/paperclip/storage/s3.rb
@@ -4,7 +4,7 @@ module Paperclip
    # distribution. You can find out more about it at http://aws.amazon.com/s3
    #
    # To use Paperclip with S3, include the +aws-sdk+ gem in your Gemfile:
-    #   gem 'aws-sdk'
+    #   gem 'aws-sdk', '~> 1.6'
    # There are a few S3-specific options for has_attached_file:
    # * +s3_credentials+: Takes a path, a File, a Hash or a Proc. The path (or File) must point
    #   to a YAML file containing the +access_key_id+ and +secret_access_key+ that Amazon
@@ -288,8 +288,7 @@ module Paperclip
      def parse_credentials creds
        creds = creds.respond_to?('call') ? creds.call(self) : creds
        creds = find_credentials(creds).stringify_keys
-        env = Object.const_defined?(:Rails) ? Rails.env : nil
+        (creds[RailsEnvironment.get] || creds).symbolize_keys
-        (creds[env] || creds).symbolize_keys
      end
      def exists?(style = default_style)

--- a/lib/paperclip/thumbnail.rb
+++ b/lib/paperclip/thumbnail.rb
@@ -29,7 +29,6 @@ module Paperclip
      super
      geometry             = options[:geometry].to_s
-      @file                = file
      @crop                = geometry[-1,1] == '#'
      @target_geometry     = options.fetch(:string_geometry_parser, Geometry).parse(geometry)
      @current_geometry    = options.fetch(:file_geometry_parser, Geometry).from_file(@file)
@@ -64,8 +63,8 @@ module Paperclip
    # that contains the new image.
    def make
      src = @file
-      dst = Tempfile.new([@basename, @format ? ".#{@format}" : ''])
+      filename = [@basename, @format ? ".#{@format}" : ""].join
-      dst.binmode
+      dst = TempfileFactory.new.generate(filename)
      begin
        parameters = []

--- a/lib/tasks/paperclip.rake
+++ b/lib/tasks/paperclip.rake
@@ -108,4 +108,20 @@ namespace :paperclip do
      end
    end
  end
+ desc "find missing attachments. Useful to know which attachments are broken"
+  task :find_broken_attachments => :environment do
+    klass = Paperclip::Task.obtain_class
+    names = Paperclip::Task.obtain_attachments(klass)
+    names.each do |name|
+      Paperclip.each_instance_with_attachment(klass, name) do |instance|
+        attachment = instance.send(name)
+        if attachment.exists?
+          print "."
+        else
+          Paperclip::Task.log_error("#{instance.class}##{attachment.name}, #{instance.id}, #{attachment.url}")
+        end
+      end
+    end
+  end
 end
--- a/paperclip.gemspec
+++ b/paperclip.gemspec
@@ -12,8 +12,6 @@ Gem::Specification.new do |s|
  s.description       = "Easy upload management for ActiveRecord"
  s.license           = "MIT"
-  s.rubyforge_project = "paperclip"
  s.files         = `git ls-files`.split("\n")
  s.test_files    = `git ls-files -- {spec,features}/*`.split("\n")
  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
@@ -24,21 +22,22 @@ Gem::Specification.new do |s|
  s.add_dependency('activemodel', '>= 3.0.0')
  s.add_dependency('activesupport', '>= 3.0.0')
-  s.add_dependency('cocaine', '~> 0.5.3')
+  s.add_dependency('cocaine', '~> 0.5.5')
  s.add_dependency('mime-types')
+  s.add_dependency('mimemagic', '0.3.0')
  s.add_development_dependency('activerecord', '>= 3.0.0')
  s.add_development_dependency('shoulda')
  s.add_development_dependency('rspec')
  s.add_development_dependency('appraisal')
  s.add_development_dependency('mocha')
-  s.add_development_dependency('aws-sdk', '>= 1.5.7')
+  s.add_development_dependency('aws-sdk', '~> 1.6')
  s.add_development_dependency('bourne')
-  s.add_development_dependency('cucumber', '~> 1.3.11')
+  s.add_development_dependency('cucumber', '~> 1.3.18')
  s.add_development_dependency('aruba')
  s.add_development_dependency('nokogiri')
  # Ruby version < 1.9.3 can't install capybara > 2.0.3.
-  s.add_development_dependency('capybara', '= 2.0.3')
+  s.add_development_dependency('capybara')
  s.add_development_dependency('bundler')
  s.add_development_dependency('fog', '~> 1.0')
  s.add_development_dependency('launchy')

--- a/spec/paperclip/attachment_definitions_spec.rb
+++ b/spec/paperclip/attachment_definitions_spec.rb
@@ -8,6 +8,6 @@ describe "Attachment Definitions" do
    Dummy.do_not_validate_attachment_file_type :avatar
    expected = {avatar: {path: "abc"}, other_attachment: {url: "123"}}
-    assert_equal expected, Dummy.attachment_definitions
+    expect(Dummy.attachment_definitions).to eq expected
  end
 end
--- a/spec/paperclip/attachment_registry_spec.rb
+++ b/spec/paperclip/attachment_registry_spec.rb
@@ -31,8 +31,8 @@ describe 'Attachment Registry' do
    it 'calls the block with the class, attachment name, and options' do
      foo = Class.new
      expected_accumulations = [
-        [foo, :avatar, { yo: 'greeting' }],
+        [foo, :avatar, { yo: "greeting" }],
-        [foo, :greeter, { ciao: 'greeting' }]
+        [foo, :greeter, { ciao: "greeting" }]
      ]
      expected_accumulations.each do |args|
        Paperclip::AttachmentRegistry.register(*args)
@@ -50,25 +50,64 @@ describe 'Attachment Registry' do
  context '.definitions_for' do
    it 'produces the attachment name and options' do
      expected_definitions = {
-        avatar: { yo: 'greeting' },
+        avatar: { yo: "greeting" },
-        greeter: { ciao: 'greeting' }
+        greeter: { ciao: "greeting" }
      }
      foo = Class.new
-      Paperclip::AttachmentRegistry.register(foo, :avatar, { yo: 'greeting' })
+      Paperclip::AttachmentRegistry.register(
-      Paperclip::AttachmentRegistry.register(foo, :greeter, { ciao: 'greeting' })
+        foo,
+        :avatar,
+        yo: "greeting"
+      )
+      Paperclip::AttachmentRegistry.register(
+        foo,
+        :greeter,
+        ciao: "greeting"
+      )
      definitions = Paperclip::AttachmentRegistry.definitions_for(foo)
      assert_equal expected_definitions, definitions
    end
-    it "produces defintions for subclasses" do
+    it 'produces defintions for subclasses' do
-      expected_definitions = { avatar: { yo: 'greeting' } }
+      expected_definitions = { avatar: { yo: "greeting" } }
-      Foo = Class.new
+      foo = Class.new
-      Bar = Class.new(Foo)
+      bar = Class.new(foo)
-      Paperclip::AttachmentRegistry.register(Foo, :avatar, expected_definitions[:avatar])
+      Paperclip::AttachmentRegistry.register(
+        foo,
+        :avatar,
+        expected_definitions[:avatar]
+      )
+      definitions = Paperclip::AttachmentRegistry.definitions_for(bar)
+      assert_equal expected_definitions, definitions
+    end
-      definitions = Paperclip::AttachmentRegistry.definitions_for(Bar)
+    it 'produces defintions for subclasses but deep merging them' do
+      foo_definitions = { avatar: { yo: "greeting" } }
+      bar_definitions = { avatar: { ciao: "greeting" } }
+      expected_definitions = {
+        avatar: {
+          yo: "greeting",
+          ciao: "greeting"
+        }
+      }
+      foo = Class.new
+      bar = Class.new(foo)
+      Paperclip::AttachmentRegistry.register(
+        foo,
+        :avatar,
+        foo_definitions[:avatar]
+      )
+      Paperclip::AttachmentRegistry.register(
+        bar,
+        :avatar,
+        bar_definitions[:avatar]
+      )
+      definitions = Paperclip::AttachmentRegistry.definitions_for(bar)
      assert_equal expected_definitions, definitions
    end
@@ -77,7 +116,11 @@ describe 'Attachment Registry' do
  context '.clear' do
    it 'removes all of the existing attachment definitions' do
      foo = Class.new
-      Paperclip::AttachmentRegistry.register(foo, :greeter, { ciao: 'greeting' })
+      Paperclip::AttachmentRegistry.register(
+        foo,
+        :greeter,
+        ciao: "greeting"
+      )
      Paperclip::AttachmentRegistry.clear

--- a/spec/paperclip/attachment_spec.rb
+++ b/spec/paperclip/attachment_spec.rb
@@ -34,9 +34,9 @@ describe Paperclip::Attachment do
  it "does not delete styles that don't get reprocessed" do
    file = File.new(fixture_file("50x50.png"), 'rb')
    rebuild_class styles: {
-      small: '100x>',
+      small: "100x>",
-      large: '500x>',
+      large: "500x>",
-      original: '42x42#' 
+      original: "42x42#"
    }
    dummy = Dummy.new
@@ -75,7 +75,11 @@ describe Paperclip::Attachment do
  it "handles a boolean second argument to #url" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
-    attachment = Paperclip::Attachment.new(:name, :instance, url_generator: mock_url_generator_builder)
+    attachment = Paperclip::Attachment.new(
+      :name,
+      FakeModel.new,
+      url_generator: mock_url_generator_builder
+      )
    attachment.url(:style_name, true)
    expect(mock_url_generator_builder.has_generated_url_with_options?(timestamp: true, escape: true)).to eq true
@@ -86,7 +90,11 @@ describe Paperclip::Attachment do
  it "passes the style and options through to the URL generator on #url" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
-    attachment = Paperclip::Attachment.new(:name, :instance, url_generator: mock_url_generator_builder)
+    attachment = Paperclip::Attachment.new(
+      :name,
+      FakeModel.new,
+      url_generator: mock_url_generator_builder
+      )
    attachment.url(:style_name, options: :values)
    expect(mock_url_generator_builder.has_generated_url_with_options?(options: :values)).to eq true
@@ -95,7 +103,7 @@ describe Paperclip::Attachment do
  it "passes default options through when #url is given one argument" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
    attachment = Paperclip::Attachment.new(:name,
-                                           :instance,
+                                           FakeModel.new,
                                           url_generator: mock_url_generator_builder,
                                           use_timestamp: true)
@@ -106,7 +114,7 @@ describe Paperclip::Attachment do
  it "passes default style and options through when #url is given no arguments" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
    attachment = Paperclip::Attachment.new(:name,
-                                           :instance,
+                                           FakeModel.new,
                                           default_style: 'default style',
                                           url_generator: mock_url_generator_builder,
                                           use_timestamp: true)
@@ -119,7 +127,7 @@ describe Paperclip::Attachment do
  it "passes the option timestamp: true if :use_timestamp is true and :timestamp is not passed" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
    attachment = Paperclip::Attachment.new(:name,
-                                           :instance,
+                                           FakeModel.new,
                                           url_generator: mock_url_generator_builder,
                                           use_timestamp: true)
@@ -130,7 +138,7 @@ describe Paperclip::Attachment do
  it "passes the option timestamp: false if :use_timestamp is false and :timestamp is not passed" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
    attachment = Paperclip::Attachment.new(:name,
-                                           :instance,
+                                           FakeModel.new,
                                           url_generator: mock_url_generator_builder,
                                           use_timestamp: false)
@@ -141,7 +149,7 @@ describe Paperclip::Attachment do
  it "does not change the :timestamp if :timestamp is passed" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
    attachment = Paperclip::Attachment.new(:name,
-                                           :instance,
+                                           FakeModel.new,
                                           url_generator: mock_url_generator_builder,
                                           use_timestamp: false)
@@ -152,7 +160,7 @@ describe Paperclip::Attachment do
  it "renders JSON as default style" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
    attachment = Paperclip::Attachment.new(:name,
-                                           :instance,
+                                           FakeModel.new,
                                           default_style: 'default style',
                                           url_generator: mock_url_generator_builder)
@@ -163,7 +171,7 @@ describe Paperclip::Attachment do
  it "passes the option escape: true if :escape_url is true and :escape is not passed" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
    attachment = Paperclip::Attachment.new(:name,
-                                           :instance,
+                                           FakeModel.new,
                                           url_generator: mock_url_generator_builder,
                                           escape_url: true)
@@ -174,7 +182,7 @@ describe Paperclip::Attachment do
  it "passes the option escape: false if :escape_url is false and :escape is not passed" do
    mock_url_generator_builder = MockUrlGeneratorBuilder.new
    attachment = Paperclip::Attachment.new(:name,
-                                           :instance,
+                                           FakeModel.new,
                                           url_generator: mock_url_generator_builder,
                                           escape_url: false)
@@ -212,6 +220,7 @@ describe Paperclip::Attachment do
    dummy = Dummy.new
    dummy.id = 1234
    dummy.avatar_file_name = "fake.jpg"
+    dummy.stubs(:new_record?).returns(false)
    expected_string = '{"avatar":"/system/dummies/avatars/000/001/234/original/fake.jpg"}'
    if ActiveRecord::Base.include_root_in_json # This is true by default in Rails 3, and false in 4
      expected_string = %({"dummy":#{expected_string}})
@@ -251,6 +260,10 @@ describe Paperclip::Attachment do
      it "returns false when asked exists?" do
        assert !@dummy.avatar.exists?
      end
+      it "#url returns nil" do
+        assert_nil @dummy.avatar.url
+      end
    end
    context "on an Attachment" do
@@ -635,15 +648,40 @@ describe Paperclip::Attachment do
    before do
      rebuild_model processor: [:thumbnail], styles: { small: '' }, whiny_thumbnails: true
      @dummy = Dummy.new
-      Paperclip::Thumbnail.expects(:make).raises(Paperclip::Error, "cannot be processed.")
      @file = StringIO.new("...")
      @file.stubs(:to_tempfile).returns(@file)
-      @dummy.avatar = @file
+    end
+    context "when error is meaningful for the end user" do
+      before do
+        Paperclip::Thumbnail.expects(:make).raises(
+          Paperclip::Errors::NotIdentifiedByImageMagickError,
+          "cannot be processed."
+        )
      end
      it "correctly forwards processing error message to the instance" do
+        @dummy.avatar = @file
        @dummy.valid?
-      assert_contains @dummy.errors.full_messages, "Avatar cannot be processed."
+        assert_contains(
+          @dummy.errors.full_messages,
+          "Avatar cannot be processed."
+        )
+      end
+    end
+    context "when error is intended for the developer" do
+      before do
+        Paperclip::Thumbnail.expects(:make).raises(
+          Paperclip::Errors::CommandNotFoundError
+        )
+      end
+      it "propagates the error" do
+        assert_raises(Paperclip::Errors::CommandNotFoundError) do
+          @dummy.avatar = @file
+        end
+      end
    end
  end

--- a/spec/paperclip/content_type_detector_spec.rb
+++ b/spec/paperclip/content_type_detector_spec.rb
 require 'spec_helper'
 describe Paperclip::ContentTypeDetector do
+  it 'returns a meaningful content type for open xml spreadsheets' do
+    file = File.new(fixture_file("empty.xlsx"))
+    assert_equal "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+                 Paperclip::ContentTypeDetector.new(file.path).detect
+  end
  it 'gives a sensible default when the name is empty' do
    assert_equal "application/octet-stream", Paperclip::ContentTypeDetector.new("").detect
  end
@@ -13,7 +19,8 @@ describe Paperclip::ContentTypeDetector do
  it 'returns content type of file if it is an acceptable type' do
    MIME::Types.stubs(:type_for).returns([MIME::Type.new('application/mp4'), MIME::Type.new('video/mp4'), MIME::Type.new('audio/mp4')])
-    Paperclip.stubs(:run).returns("video/mp4")
+    Paperclip::ContentTypeDetector.any_instance
+      .stubs(:type_from_file_contents).returns("video/mp4")
    @filename = "my_file.mp4"
    assert_equal "video/mp4", Paperclip::ContentTypeDetector.new(@filename).detect
  end

--- a/spec/paperclip/file_command_content_type_detector_spec.rb
+++ b/spec/paperclip/file_command_content_type_detector_spec.rb
@@ -24,4 +24,3 @@ describe Paperclip::FileCommandContentTypeDetector do
      Paperclip::FileCommandContentTypeDetector.new("windows").detect
  end
 end
--- a/spec/paperclip/interpolations_spec.rb
+++ b/spec/paperclip/interpolations_spec.rb
@@ -138,14 +138,7 @@ describe Paperclip::Interpolations do
    assert_equal "000/000/023", Paperclip::Interpolations.id_partition(attachment, :style)
  end
-  it "returns the partitioned id of the attachment when the id is a short string" do
+  it "returns the partitioned id of the attachment when the id is a string" do
-    attachment = mock
-    attachment.expects(:id).returns("fnj23")
-    attachment.expects(:instance).returns(attachment)
-    assert_equal "000/0fn/j23", Paperclip::Interpolations.id_partition(attachment, :style)
-  end
-  it "returns the partitioned id of the attachment when the id is a long string" do
    attachment = mock
    attachment.expects(:id).returns("32fnj23oio2f")
    attachment.expects(:instance).returns(attachment)

--- a/spec/paperclip/io_adapters/abstract_adapter_spec.rb
+++ b/spec/paperclip/io_adapters/abstract_adapter_spec.rb
@@ -9,11 +9,12 @@ describe Paperclip::AbstractAdapter do
    end
  end
-  context "content type from file command" do
+  context "content type from file contents" do
    before do
      @adapter = TestAdapter.new
      @adapter.stubs(:path).returns("image.png")
      Paperclip.stubs(:run).returns("image/png\n")
+      Paperclip::ContentTypeDetector.any_instance.stubs(:type_from_mime_magic).returns("image/png")
    end
    it "returns the content type without newline" do

--- a/spec/paperclip/io_adapters/file_adapter_spec.rb
+++ b/spec/paperclip/io_adapters/file_adapter_spec.rb
@@ -73,10 +73,13 @@ describe Paperclip::FileAdapter do
        end
      end
-      context "file with content type derived from file command on *nix" do
+      context "file with content type derived from file contents on *nix" do
        before do
          MIME::Types.stubs(:type_for).returns([])
          Paperclip.stubs(:run).returns("application/vnd.ms-office\n")
+          Paperclip::ContentTypeDetector.any_instance
+            .stubs(:type_from_mime_magic).returns("application/vnd.ms-office")
          @subject = Paperclip.io_adapters.for(@file)
        end

--- a/spec/paperclip/io_adapters/stringio_adapter_spec.rb
+++ b/spec/paperclip/io_adapters/stringio_adapter_spec.rb
@@ -20,6 +20,10 @@ describe Paperclip::StringioAdapter do
      assert_equal 6, @subject.size
    end
+    it "returns the length of the data" do
+      assert_equal 6, @subject.length
+    end
    it "generates an MD5 hash of the contents" do
      assert_equal Digest::MD5.hexdigest(@contents), @subject.fingerprint
    end

--- a/spec/paperclip/media_type_spoof_detector_spec.rb
+++ b/spec/paperclip/media_type_spoof_detector_spec.rb
@@ -53,4 +53,18 @@ describe Paperclip::MediaTypeSpoofDetector do
    file = File.open(fixture_file("empty.html"))
    assert ! Paperclip::MediaTypeSpoofDetector.using(file, "empty.html", "").spoofed?
  end
+  it 'does allow array as :content_type_mappings' do
+    begin
+      Paperclip.options[:content_type_mappings] = {
+        html: ['binary', 'text/html']
+      }
+      file = File.open(fixture_file('empty.html'))
+      spoofed = Paperclip::MediaTypeSpoofDetector
+                .using(file, 'empty.html').spoofed?
+      assert !spoofed
+    ensure
+      Paperclip.options[:content_type_mappings] = {}
+    end
+  end
 end
--- a/spec/paperclip/paperclip_spec.rb
+++ b/spec/paperclip/paperclip_spec.rb
@@ -20,7 +20,7 @@ describe Paperclip do
    it "saves Cocaine::CommandLine.path that set before" do
      Cocaine::CommandLine.path = "/opt/my_app/bin"
      Paperclip.run("convert", "stuff")
-      assert_equal [Cocaine::CommandLine.path].flatten.include?("/opt/my_app/bin"), true
+      assert_equal Cocaine::CommandLine.path.include?("/opt/my_app/bin"), true
    end
    it "does not duplicate Cocaine::CommandLine.path on multiple runs" do

--- a/spec/paperclip/rails_environment_spec.rb
+++ b/spec/paperclip/rails_environment_spec.rb
+require 'spec_helper'
+describe Paperclip::RailsEnvironment do
+  it "returns nil when Rails isn't defined" do
+    resetting_rails_to(nil) do
+      expect(Paperclip::RailsEnvironment.get).to be_nil
+    end
+  end
+  it "returns nil when Rails.env isn't defined" do
+    resetting_rails_to({}) do
+      expect(Paperclip::RailsEnvironment.get).to be_nil
+    end
+  end
+  it "returns the value of Rails.env if it is set" do
+    resetting_rails_to(OpenStruct.new(env: "foo")) do
+      expect(Paperclip::RailsEnvironment.get).to eq "foo"
+    end
+  end
+  def resetting_rails_to(new_value)
+    begin
+      previous_rails = Object.send(:remove_const, "Rails")
+      Object.const_set("Rails", new_value) unless new_value.nil?
+      yield
+    ensure
+      Object.send(:remove_const, "Rails") if Object.const_defined?("Rails")
+      Object.const_set("Rails", previous_rails)
+    end
+  end
+end
--- a/spec/paperclip/storage/fog_spec.rb
+++ b/spec/paperclip/storage/fog_spec.rb
@@ -320,6 +320,9 @@ describe Paperclip::Storage::Fog do
        it "honors the scheme in public url" do
          assert_match(/^http:\/\//, @dummy.avatar.url)
        end
+        it "honors the scheme in expiring url" do
+          assert_match(/^http:\/\//, @dummy.avatar.expiring_url)
+        end
      end
      context "with scheme not set" do
@@ -334,15 +337,20 @@ describe Paperclip::Storage::Fog do
        it "provides HTTPS public url" do
          assert_match(/^https:\/\//, @dummy.avatar.url)
        end
+        it "provides HTTPS expiring url" do
+          assert_match(/^https:\/\//, @dummy.avatar.expiring_url)
+        end
      end
      context "with a valid bucket name for a subdomain" do
+        before { @dummy.stubs(:new_record?).returns(false) }
        it "provides an url in subdomain style" do
          assert_match(/^https:\/\/papercliptests.s3.amazonaws.com\/avatars\/5k.png/, @dummy.avatar.url)
        end
        it "provides an url that expires in subdomain style" do
-          assert_match(/^http:\/\/papercliptests.s3.amazonaws.com\/avatars\/5k.png.+Expires=.+$/, @dummy.avatar.expiring_url)
+          assert_match(/^https:\/\/papercliptests.s3.amazonaws.com\/avatars\/5k.png.+Expires=.+$/, @dummy.avatar.expiring_url)
        end
      end
@@ -390,7 +398,7 @@ describe Paperclip::Storage::Fog do
        end
        it "provides a url that expires in folder style" do
-          assert_match(/^http:\/\/s3.amazonaws.com\/this_is_invalid\/avatars\/5k.png.+Expires=.+$/, @dummy.avatar.expiring_url)
+          assert_match(/^https:\/\/s3.amazonaws.com\/this_is_invalid\/avatars\/5k.png.+Expires=.+$/, @dummy.avatar.expiring_url)
        end
      end
@@ -492,6 +500,7 @@ describe Paperclip::Storage::Fog do
      @file = File.new(fixture_file('5k.png'), 'rb')
      @dummy = Dummy.new
      @dummy.avatar = @file
+      @dummy.stubs(:new_record?).returns(false)
    end
    after do

--- a/spec/paperclip/storage/s3_spec.rb
+++ b/spec/paperclip/storage/s3_spec.rb
@@ -105,6 +105,7 @@ describe Paperclip::Storage::S3 do
        url: ":s3_path_url"
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a url based on an S3 path" do
@@ -145,6 +146,7 @@ describe Paperclip::Storage::S3 do
        path: ":attachment/:basename:dotextension"
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a url based on an S3 path" do
@@ -161,6 +163,7 @@ describe Paperclip::Storage::S3 do
        path: ":attachment/:basename:dotextension"
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a protocol-relative URL" do
@@ -177,6 +180,7 @@ describe Paperclip::Storage::S3 do
        path: ":attachment/:basename:dotextension"
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a url based on an S3 path" do
@@ -193,6 +197,7 @@ describe Paperclip::Storage::S3 do
        path: ":attachment/:basename:dotextension"
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a url based on an S3 path" do
@@ -236,6 +241,7 @@ describe Paperclip::Storage::S3 do
        s3_host_name: "s3-ap-northeast-1.amazonaws.com"
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a url based on an :s3_host_name path" do
@@ -259,6 +265,7 @@ describe Paperclip::Storage::S3 do
        attr_accessor :value
      end
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "uses s3_host_name as a proc if available" do
@@ -281,6 +288,7 @@ describe Paperclip::Storage::S3 do
        File.open(fixture_file('5k.png'), 'rb') do |file|
          @dummy = Dummy.new
          @dummy.avatar = file
+          @dummy.stubs(:new_record?).returns(false)
        end
    end
@@ -342,17 +350,18 @@ describe Paperclip::Storage::S3 do
  context "An attachment that uses S3 for storage and has spaces in file name" do
    before do
-      rebuild_model styles: { large: ['500x500#', :jpg] },
+      rebuild_model(
+        styles: { large: ["500x500#", :jpg] },
        storage: :s3,
        bucket: "bucket",
-        s3_credentials: {
+        s3_credentials: { "access_key_id" => "12345",
-          'access_key_id' => "12345",
+                          "secret_access_key" => "54321" }
-          'secret_access_key' => "54321"
+        )
-        }
-        File.open(fixture_file('spaced file.png'), 'rb') do |file|
+      File.open(fixture_file("spaced file.png"), "rb") do |file|
        @dummy = Dummy.new
        @dummy.avatar = file
+        @dummy.stubs(:new_record?).returns(false)
      end
    end
@@ -385,6 +394,7 @@ describe Paperclip::Storage::S3 do
      @dummy = Dummy.new
      @dummy.avatar = file
      @dummy.save
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a replaced version for path" do
@@ -405,6 +415,7 @@ describe Paperclip::Storage::S3 do
        url: ":s3_domain_url"
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a url based on an S3 subdomain" do
@@ -414,16 +425,20 @@ describe Paperclip::Storage::S3 do
  context "" do
    before do
-      rebuild_model storage: :s3,
+      rebuild_model(
+        storage: :s3,
        s3_credentials: {
          production: { bucket: "prod_bucket" },
          development: { bucket: "dev_bucket" }
        },
+        bucket: "bucket",
        s3_host_alias: "something.something.com",
        path: ":attachment/:basename:dotextension",
        url: ":s3_alias_url"
+        )
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a url based on the host_alias" do
@@ -447,6 +462,7 @@ describe Paperclip::Storage::S3 do
      end
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a url based on the host_alias" do
@@ -469,6 +485,7 @@ describe Paperclip::Storage::S3 do
        url: ":asset_host"
      @dummy = Dummy.new
      @dummy.avatar = stringy_file
+      @dummy.stubs(:new_record?).returns(false)
    end
    it "returns a relative URL for Rails to calculate assets host" do
@@ -684,6 +701,7 @@ describe Paperclip::Storage::S3 do
        @file = File.new(fixture_file('5k.png'), 'rb')
        @dummy = Dummy.new
        @dummy.avatar = @file
+        @dummy.stubs(:new_record?).returns(false)
      end
      after { @file.close }

--- a/spec/paperclip/tempfile_factory_spec.rb
+++ b/spec/paperclip/tempfile_factory_spec.rb
@@ -26,4 +26,8 @@ describe Paperclip::TempfileFactory do
   file = subject.generate
   assert File.exist?(file.path)
  end
+  it "does not throw Errno::ENAMETOOLONG when it has a really long name" do
+    expect { subject.generate("o" * 255) }.to_not raise_error
+  end
 end
--- a/spec/paperclip/thumbnail_spec.rb
+++ b/spec/paperclip/thumbnail_spec.rb
@@ -481,4 +481,20 @@ describe Paperclip::Thumbnail do
      end
    end
  end
+  context "with a really long file name" do
+    before do
+      tempfile = Tempfile.new("f")
+      tempfile_additional_chars = tempfile.path.split("/")[-1].length + 15
+      image_file = File.new(fixture_file("5k.png"), "rb")
+      @file = Tempfile.new("f" * (255 - tempfile_additional_chars))
+      @file.write(image_file.read)
+      @file.rewind
+    end
+    it "does not throw Errno::ENAMETOOLONG" do
+      thumb = Paperclip::Thumbnail.new(@file, geometry: "50x50", format: :gif)
+      expect { thumb.make }.to_not raise_error
+    end
+  end
 end
--- a/spec/paperclip/url_generator_spec.rb
+++ b/spec/paperclip/url_generator_spec.rb
@@ -43,7 +43,7 @@ describe Paperclip::UrlGenerator do
  end
  it "executes the method named by the symbol as the default URL when no file is assigned" do
-    mock_model = MockModel.new
+    mock_model = FakeModel.new
    mock_attachment = MockAttachment.new(model: mock_model)
    mock_interpolator = MockInterpolator.new
    default_url = :to_s

--- a/spec/support/fake_model.rb
+++ b/spec/support/fake_model.rb
@@ -18,4 +18,8 @@ class FakeModel
  def valid?
    errors.empty?
  end
+  def new_record?
+    false
+  end
 end
--- a/spec/support/fixtures/empty.xlsx
+++ b/spec/support/fixtures/empty.xlsx
--- a/spec/support/matchers/have_column.rb
+++ b/spec/support/matchers/have_column.rb
@@ -8,7 +8,16 @@ RSpec::Matchers.define :have_column do |column_name|
    column && column.default.to_s == @default.to_s
  end
-  failure_message_for_should do |columns|
+  failure_message_method =
-    "expected to find '#{column_name}', default '#{@default}' in #{columns.map{|column| [column.name, column.default] }}"
+    if RSpec::Version::STRING.to_i >= 3
+      :failure_message
+    else
+      :failure_message_for_should
+    end
+  send(failure_message_method) do |columns|
+    "expected to find '#{column_name}', " +
+      "default '#{@default}' " +
+      "in #{columns.map { |column| [column.name, column.default] }}"
  end
 end
--- a/spec/support/mock_model.rb
+++ b/spec/support/mock_model.rb
-class MockModel
-end