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MiniApivore

MiniApivore is an adaptation of the apivore gem for mini-test instead of rspec.

Original project: https://github.com/westfieldlabs/apivore

So base credits should go to the apivore authors, this is 60% copy/paste of original project. Rem: didn't forked it cause didn't expect it to be a relatively small set of changes.

Code-Test-Document, the idea of how things are need to be done: https://medium.com/@leshchuk/code-test-document-9b79921307a5

What's new/different

  • Swagger schema can be loaded from a file or directly. There can be one schema per MiniTestClass.
  • Removed all dependencies of active support and rails. See tests as an example on how to use a mini-apivore outside a rails
  • Didn't implement a custom schema validator ( but I kept the original schema and code from apivore in case of a future need )
  • The test for untested routes now added by default at the end of all runnable_methods
  • Much more simplified tests against original project, rspec is replaced with minitest
  • Removed all rspec dependencies and usage.

Installation

Add this line to your application's Gemfile:

gem 'mini-apivore'

And then execute:

$ bundle

Or install it yourself as:

$ gem install mini-apivore

Usage

To start testing routes with mini_apivore you need:

  • require 'mini_apivore' in you MiniTest class file
  • include MiniApivore in you MiniTest class
  • init_swagger('/apidocs.json') init swagger-schema against which yourtest are gonna run
  • Run check_route( :get, '/cards.json', OK ) against all routes in your swagger schema

You can see example in test/mini_apivore/mini_apivore/api_schemas_test.rb

Here another complete example of testing simple internal REST api for Card model with devise integration as authentication framework

#mini_apivore_helper.rb
require 'mini_apivore'

# this is simple intermediate class for apivore tes classes
class MiniApivoreTest < ActionDispatch::IntegrationTest
  include Devise::Test::IntegrationHelpers
  include MiniApivore

  # swagger checker initialized once per class, but since we using one definition
  # for all we can just redefine original swagger_checker
  def swagger_checker;
    SWAGGER_CHECKERS[MiniApivoreTest]
  end
  
end

The most readable way to handle check_routes, especially when you have nested resources i.e. like always :), is to create a set of named route helpers for the TestClass, may be even extract it to a module if it's a generalized helpers.

Then you need to redefine prepare_error_backtrace, cause assert for correct execution is hidden deep in stack and instead of pointing to just to that useless stack frame you need show something upper and may be more context, so you can redefine prepare_error_backtrace and deliver valuable context!

Here is an example how you can handle simple resource route testing, as you can see you can read it without a context of a routes structure and without verbosity:

#cards_api_test.rb
require 'test_helper'
require 'mini_apivore_helper'

class CardsApiTest < MiniApivoreTest
  
   #------- DEFINE CLASS SPECIFIC NAMED ROUTE HELPERS ----------------
    def __get_cards(expectation)
       check_route( :get, '/cards.json', expectation )
    end 

    def __get_card( card, expectation)
      # check_route will use to_param inside
      check_route( :get, '/cards/{id}.json', expectation, id: card )
    end 

    def __update_card( card, expectation, params = {})
      # check_route will use to_param inside
      check_route( :patch, '/cards/{id}.json', expectation, id: card, **params)
    end 

    def __create_card( expectation, params = {})
      check_route( :post, '/cards.json', expectation, params )
    end

    def __delete_card(card, expectation)
      check_route( :delete, '/cards/{id}.json', expectation, id: card )
    end
   #------- DEFINE CLASS SPECIFIC NAMED ROUTE HELPERS DONE -----------
   # 
   # failure need a proper stackframe and a context around:
   def prepare_error_backtrace
     # it will deliver something like this: 
     #"/app/test/helpers/base_routes_helpers.rb:57:in `__create_card'",
     #"/app/test/integration/cards_api_test.rb:71:in `block (2 levels) in <class:CommentsApiTest>'",
     Thread.current.backtrace[2..-1].slice_after{|trc| trc[/check_route/] }.to_a.last[0..1]
   end

  test 'cards unauthorized' do
    card = cards(:valid_card_1)
    __get_cards( NOT_AUTHORIZED )
    __get_card( card, NOT_AUTHORIZED )
    __update_card( card, NOT_AUTHORIZED, _data: { card: { title: '1' } } )
    __create_card( NOT_AUTHORIZED, _data: { card: { title: '1' } } )
    __delete_card( card, NOT_AUTHORIZED )
  end

  test 'cards forbidden' do
    sign_in( :first_user )
    # card with restricted privileges 
    card = cards(:restricted_card)

    __get_card( card, FORBIDDEN )
    __update_card( card, FORBIDDEN, id: card, _data: { card: { title: '1' } } )

    # this may be added if not all users can create cards 
    # check_route( :post, '/cards.json', FORBIDDEN,  _data: { card: { title: '1' } } )

    __delete_card( card, FORBIDDEN)
  end

  test 'cards not_found' do
    sign_in( :first_user )
    card = Card.new(id: -1)
    __get_card( card, NOT_FOUND )
    __update_card( card, NOT_FOUND )
    __delete_card( card, NOT_FOUND  )
  end

  test 'cards REST authorized' do
    sign_in( :first_user )
    __get_cards( OK )
    __get_cards( cards(:valid_card_1), OK )

    assert_difference( -> { Card.count } ) do
      __create_card( OK, _data: {
                     card: { title: 'test card creation', 
                     card_preview_img_attributes: {
                                upload: fixture_file_upload( Rails.root.join('test', 'fixtures', 'files', 'test.png') ,'image/png')
                              }
                     } } )
    end
    created_card = Card.last
    assert_equal( 'test card creation', created_card.title )

    __update_card( created_card, OK, _data: { card: { title: 'Nothing' } } )
    assert_equal( created_card.reload.title, 'Nothing' )

    assert_difference( -> { Card.count }, -1 ) do
       __delete_card( created_card, NO_CONTENT )
    end

  end
end

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. 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.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/mini-apivore. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.

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MiniTest based version of Apivore gem.

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