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require 'abstract_unit'
require 'action_dispatch/testing/assertions/response'

module ActionDispatch
  module Assertions
    class ResponseAssertionsTest < ActiveSupport::TestCase
      include ResponseAssertions

      FakeResponse = Struct.new(:response_code, :location) do
        def initialize(*)
          super
          self.location ||= "http://test.example.com/posts"
        end

        [:successful, :not_found, :redirection, :server_error].each do |sym|
          define_method("#{sym}?") do
            sym == response_code
          end
        end
      end

      def setup
        @controller = nil
        @request = nil
      end

      def test_assert_response_predicate_methods
        [:success, :missing, :redirect, :error].each do |sym|
          @response = FakeResponse.new RESPONSE_PREDICATES[sym].to_s.sub(/\?/, '').to_sym
          assert_response sym

          assert_raises(Minitest::Assertion) {
            assert_response :unauthorized
          }
        end
      end

      def test_assert_response_fixnum
        @response = FakeResponse.new 400
        assert_response 400

        assert_raises(Minitest::Assertion) {
          assert_response :unauthorized
        }

        assert_raises(Minitest::Assertion) {
          assert_response 500
        }
      end

      def test_assert_response_sym_status
        @response = FakeResponse.new 401
        assert_response :unauthorized

        assert_raises(Minitest::Assertion) {
          assert_response :ok
        }

        assert_raises(Minitest::Assertion) {
          assert_response :success
        }
      end

      def test_assert_response_sym_typo
        @response = FakeResponse.new 200

        assert_raises(ArgumentError) {
          assert_response :succezz
        }
      end

      def test_error_message_shows_404_when_404_asserted_for_success
        @response = ActionDispatch::Response.new
        @response.status = 404

        error = assert_raises(Minitest::Assertion) { assert_response :success }
        expected = "Expected response to be a <2XX: success>,"\
                   " but was a <404: Not Found>"
        assert_match expected, error.message
      end

      def test_error_message_shows_404_when_asserted_for_200
        @response = ActionDispatch::Response.new
        @response.status = 404

        error = assert_raises(Minitest::Assertion) { assert_response 200 }
        expected = "Expected response to be a <200: OK>,"\
                   " but was a <404: Not Found>"
        assert_match expected, error.message
      end

      def test_error_message_shows_302_redirect_when_302_asserted_for_success
        @response = ActionDispatch::Response.new
        @response.status = 302
        @response.location = 'http://test.host/posts/redirect/1'

        error = assert_raises(Minitest::Assertion) { assert_response :success }
        expected = "Expected response to be a <2XX: success>,"\
                   " but was a <302: Found>" \
                   " redirect to <http://test.host/posts/redirect/1>"
        assert_match expected, error.message
      end

      def test_error_message_shows_302_redirect_when_302_asserted_for_301
        @response = ActionDispatch::Response.new
        @response.status = 302
        @response.location = 'http://test.host/posts/redirect/2'

        error = assert_raises(Minitest::Assertion) { assert_response 301 }
        expected = "Expected response to be a <301: Moved Permanently>,"\
                   " but was a <302: Found>" \
                   " redirect to <http://test.host/posts/redirect/2>"
        assert_match expected, error.message
      end
    end
  end
end