actionpack/test/controller/api/params_wrapper_test.rb


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require 'abstract_unit'

class ParamsWrapperForApiTest < ActionController::TestCase
  class UsersController < ActionController::API
    attr_accessor :last_parameters

    wrap_parameters :person, format: [:json]

    def test
      self.last_parameters = params.except(:controller, :action).to_unsafe_h
      head :ok
    end
  end

  class Person; end

  tests UsersController

  def test_specify_wrapper_name
    @request.env['CONTENT_TYPE'] = 'application/json'
    post :test, params: { 'username' => 'sikachu' }

    expected = { 'username' => 'sikachu', 'person' => { 'username' => 'sikachu' }}
    assert_equal expected, @controller.last_parameters
  end
end