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fixture_file_upload Example

/ Published in: Ruby
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fixture_file_upload is another nifty Rails testing feature. It allows you to create "MIME-encoded content that would normally be uploaded by a browser input field." (Part in quotes straight from Agile Web Development with Rails, v2). Put your files to test in test/fixtures/files. You have to create the 'files' directory; rails doesn't do it for you.

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  1. # app/models/house_photo.rb
  2. class HousePhoto < ActiveRecord::Base
  3.   belongs_to :house
  4.   acts_as_list :scope => :house
  5.   file_column :image,
  6.               :root_path => ENV["RAILS_ENV"] == "test" ? 
  7.                             File.join(RAILS_ROOT, "public", "test") : 
  8.                             File.join(RAILS_ROOT, "public"),
  9.               :magick => {:geometry => "640x480",
  10.                           :versions => {:thumb => "128x96", :medium => "288x288" }}
  11.   validates_presence_of :image
  12.   validates_presence_of :house_id
  13. end
  14.  
  15. # test/unit/house_photo_test.rb
  16. require File.dirname(__FILE__) + '/../test_helper'
  17. class HousePhotoTest < Test::Unit::TestCase
  18.   fixtures :house_photos, :houses
  19.  
  20.   def test_should_get_positioned
  21.     p = create_photo
  22.     assert p.position
  23.   end
  24.  
  25.   # Other tests go here...
  26.  
  27.   protected
  28.  
  29.   def create_photo(options = {}, image_filename = 'files/house1_exterior1.gif')
  30.     photo = fixture_file_upload(image_filename, 'image/jpg')
  31.     houses(:house1).house_photos.create({ :image => photo }.merge(options))
  32.   end
  33. end

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