How To Test Image Uploads With MiniTest On Padrino

This week I got to pair program with Oren Golan whose last high profile job was at Border Stylo. While there, he wrote a series of excellent blog posts that I highly recommend reading. The one that caught my eye was his post on MiniTest, that’s a lighter version of RSpec.

We created a Padrino app that uses the Sequel gem as an ORM for SQLite.

We tested a raw file upload and the uploading capabilities of Carrierwave.

The working test is on http://github.com/barce/test, and to run it just clone the repo and type the following:

cd test
bundle install
padrino sq:migrate:up

Here’s the test:

# put this into the test/test.rb file
require 'rubygems'
gem 'minitest'
require 'minitest/autorun'
require 'rack/test'
require '../config/boot.rb'

class TestManualBadgeType < MiniTest::Unit::TestCase
  include Rack::Test::Methods

  FILE2UPLOAD  = "/Users/jimbarcelona/pink-pony.jpg"
  UPLOADEDFILE = "/Users/jimbarcelona/repos/oren/forks/test/test/pink-pony.jpg"

  def app() Test end

  def setup
    if File.exist?(UPLOADEDFILE)
      File.delete(UPLOADEDFILE)
    end
  end

  def test_opload
    post '/', 'file' => Rack::Test::UploadedFile.new(FILE2UPLOAD, 'image/jpeg')

    assert_equal last_response.status, 201
  end

  def test_carrierwave_201
    post '/carrierwave', 'file' => Rack::Test::UploadedFile.new(FILE2UPLOAD, 'image/jpeg')

    assert_equal last_response.status, 201
  end

  def test_carrierwave_file_exist
    post '/carrierwave', 'file' => Rack::Test::UploadedFile.new(FILE2UPLOAD, 'image/jpeg')
    assert_equal last_response.status, 201
  end
end

Now you’re ready to run the test upload:

cd test
ruby test.rb

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