Last Updated: February 25, 2016

Testing multipart posts with cucumber-api-steps

At Mode Set we use @jayzes's cucumber-api-steps to test and document APIs that we create for client projects. We recently need to test image uploading via a multipart form post. Rack::Test makes this pretty trivial. We defined a custom step below.

Given( /^(?:|I )send a multipart (POST|PUT) request (?:for|to) "([^"]*)" with:/) do |verb, path, body|
 body = body.hashes
 request = body.inject({}) do |hash, row|
 if row['Filename'].present?
 hash[row['Name']] = Rack::Test::UploadedFile.new(Rails.root.join('features/support/attachments/', row['Filename']), row['Type'])
 else
 hash[row['Name']] = row['Content'].strip
 end
 hash
 end

 page.driver.send(verb.downcase.to_sym, path, request)
end

Note: We set the accept headers in other steps definitions

The scenario then looks something like:

@json
Scenario: As a patient I want to attach an image to a message
 When I send a multipart POST request to "/api/doctors/1/messages" with:
 | Name | Content | Filename | Type |
 | message[body] | lorem ipsum | | |
 | message[attachment] | | face-itch.jpg | image/jpeg |

There you have it test your API with file uploads!

#cucumber

#testing