This gem recreates similar rspec matchers for carrierwave into minitest asserts. Please see the usage section for a complete example app.
imagemagick libmagickwand-dev
You can install them on ubuntu as follows
sudo apt-get install imagemagick libmagickwand-dev
The following gems are needed
rmagick (needs to be added in rails 5)
Minitest (included in rails 5)
i18n (included in rails 5)
Add the following lines to your application's Gemfile:
gem 'rmagick'
gem 'carrierwave_asserts'
And then execute:
$ bundle install
Or install it yourself as:
$ gem install carrierwave_asserts
Here is an example project using the asserts. carrierwave_asserts example
Inside you project under the test folder create a folder uploaders. All your uploaders should be tested in this folder.
Here is a sample uploader file
project_name/test/uploaders/picture_uploader_test.rb
##########################################################################
require 'test_helper'
require 'minitest/autorun'
require 'rmagick'
class PictureUploaderTest < ActiveSupport::TestCase
include Magick
setup do
PictureUploader.enable_processing = true
file_path = File.join( fixture_path, "files","imgs", "cat_1.jpeg")
data_url = "data:image/jpeg;base64,"
data_url += Base64.encode64(File.open(file_path).read)
cat = Cat.create(name: 'Mr Snuggles', picture: data_url)
@uploader = PictureUploader.new(cat, :picture)
File.open(file_path) { |f| @uploader.store!(f) }
end
test "img scales down landscape to fit within 200 by 133 pixels" do
assert_be_no_larger_than(@uploader.current_path, 200, 133)
end
test "thumbnail scales down to exactly 100 by 67 pixels" do
assert_have_dimensions(@uploader.thumb.current_path, 100, 67)
end
test "adds the correct permissions" do
assert_have_permissions(@uploader.current_path,"700")
end
test "thumbnail is the same as the expected thumbnail file" do
example = File.join(fixture_path,"files","example_imgs","thumb.jpeg")
assert_identical_files(example,@uploader.thumb.current_path)
end
test "image is the same as the expected image file" do
example = File.join(fixture_path,"files","example_imgs","cat_uploaded.jpeg")
assert_identical_files(example,@uploader.current_path)
end
test "File is in the expected folder location" do
assert_file_location(@uploader.current_path)
end
test "processes the thumbnail to the proper mb size" do
assert_file_size(@uploader.thumb.current_path,65817)
end
test "processes the image to the proper mb size" do
assert_file_size(@uploader.current_path,80467.0)
end
test "has the correct format" do
assert_format(@uploader.current_path,"JPEG")
end
end
##########################################################################
Under
project_name/config/locales/some_language.cwa.yml
you can customize the error messages.
Here is the default.
en:
cwa:
expected_permissions: "Expected permissions: "
actual_permissions: "Actual permissions: "
expected_format: "Expected format: "
actual_format: "Actual format: "
expected_size: "Expected file size: "
actual_size: "Actual file size: "
wrong_location: "File was not found at the expected location \n"
not_identical: "\n Is not identical to \n"
expected_height: "Expected height: "
actual_height: "Actual height: "
expected_width: "Expected width: "
actual_width: "Actual width: "
expected_height_no_larger_than: "Expected height to be no larger than: "
expected_width_no_larger_than: "Expected width to be no larger than: "
After checking out the repo, run bin/setup
to install dependencies. You can also run bin/console
for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install
. To release a new version, update the version number in version.rb
, and then run bundle exec rake release
, which will create a git tag for the version, push git commits and tags, and push the .gem
file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/hcfairbanks/carrierwave_asserts.
The gem is available as open source under the terms of the MIT License.