require 'test_helper'

class Widget
  extend ActiveModel::Naming
  include ActiveModel::Conversion
end

class WidgetsController < InheritedResources::Base
end

# test usage of `permitted_params`
class StrongParametersTest < ActionController::TestCase
  def setup
    draw_routes do
      resources :widgets
    end

    @controller = WidgetsController.new
    @controller.stubs(:widget_url).returns("/")
    @controller.stubs(:permitted_params).returns(widget: {permitted: 'param'})
    class << @controller
      private :permitted_params
    end
  end

  def teardown
    clear_routes
  end

  def test_permitted_params_from_new
    Widget.expects(:new).with(permitted: 'param')
    get :new, params: { widget: { permitted: 'param', prohibited: 'param' } }
  end

  def test_permitted_params_from_create
    Widget.expects(:new).with(permitted: 'param').returns(mock(save: true))
    post :create, params: { widget: { permitted: 'param', prohibited: 'param' } }
  end

  def test_permitted_params_from_update
    mock_widget = mock
    mock_widget.stubs(:class).returns(Widget)
    mock_widget.expects(:update).with(permitted: 'param')
    mock_widget.stubs(:persisted?).returns(true)
    mock_widget.stubs(:to_model).returns(mock_widget)
    mock_widget.stubs(:model_name).returns(Widget.model_name)
    Widget.expects(:find).with('42').returns(mock_widget)
    put :update, params: { id: '42', widget: {permitted: 'param', prohibited: 'param'} }
  end

  # `permitted_params` has greater priority than `widget_params`
  def test_with_permitted_and_resource_methods
    @controller.stubs(:widget_params).returns(permitted: 'another_param')
    class << @controller
      private :widget_params
    end
    Widget.expects(:new).with(permitted: 'param')
    get :new, params: { widget: { permitted: 'param', prohibited: 'param' } }
  end
end

# test usage of `widget_params`
class StrongParametersWithoutPermittedParamsTest < ActionController::TestCase
  def setup
    draw_routes do
      resources :widgets
    end

    @controller = WidgetsController.new
    @controller.stubs(:widget_url).returns("/")
    @controller.stubs(:widget_params).returns(permitted: 'param')
    class << @controller
      private :widget_params
    end
  end

  def teardown
    clear_routes
  end

  def test_permitted_params_from_new
    Widget.expects(:new).with(permitted: 'param')
    get :new, params: { widget: { permitted: 'param', prohibited: 'param' } }
  end

  def test_permitted_params_from_create
    Widget.expects(:new).with(permitted: 'param').returns(mock(save: true))
    post :create, params: { widget: { permitted: 'param', prohibited: 'param' } }
  end

  def test_permitted_params_from_update
    mock_widget = mock
    mock_widget.stubs(:class).returns(Widget)
    mock_widget.expects(:update).with(permitted: 'param')
    mock_widget.stubs(:persisted?).returns(true)
    mock_widget.stubs(:to_model).returns(mock_widget)
    mock_widget.stubs(:model_name).returns(Widget.model_name)
    Widget.expects(:find).with('42').returns(mock_widget)
    put :update, params: { id: '42', widget: {permitted: 'param', prohibited: 'param'} }
  end
end

# test usage of `widget_params` integrated with strong parameters (not using stubs)
class StrongParametersIntegrationTest < ActionController::TestCase
  def setup
    draw_routes do
      resources :widgets
    end

    @controller = WidgetsController.new
    @controller.stubs(:widget_url).returns("/")

    class << @controller
      define_method :widget_params do
        params.require(:widget).permit(:permitted)
      end
      private :widget_params
    end
  end

  def teardown
    clear_routes
  end

  def test_permitted_empty_params_from_new
    Widget.expects(:new).with({})
    get :new, params: {}
  end

  def test_permitted_params_from_new
    Widget.expects(:new).with('permitted' => 'param')
    get :new, params: { widget: { permitted: 'param', prohibited: 'param' } }
  end

  def test_permitted_params_from_create
    Widget.expects(:new).with('permitted' => 'param').returns(mock(save: true))
    post :create, params: { widget: { permitted: 'param', prohibited: 'param' } }
  end

  def test_permitted_params_from_update
    mock_widget = mock
    mock_widget.stubs(:class).returns(Widget)
    mock_widget.expects(:update).with('permitted' => 'param')
    mock_widget.stubs(:persisted?).returns(true)
    mock_widget.stubs(:to_model).returns(mock_widget)
    mock_widget.stubs(:model_name).returns(Widget.model_name)
    Widget.expects(:find).with('42').returns(mock_widget)
    put :update, params: { id: '42', widget: {permitted: 'param', prohibited: 'param'} }
  end
end