require "abstract_unit" class ParameterEncodingController < ActionController::Base skip_parameter_encoding :test_bar skip_parameter_encoding :test_all_values_encoding def test_foo render body: params[:foo].encoding end def test_bar render body: params[:bar].encoding end def test_all_values_encoding render body: ::JSON.dump(params.values.map(&:encoding).map(&:name)) end end class ParameterEncodingTest < ActionController::TestCase tests ParameterEncodingController test "properly transcodes UTF8 parameters into declared encodings" do post :test_foo, params: { "foo" => "foo", "bar" => "bar", "baz" => "baz" } assert_response :success assert_equal "UTF-8", @response.body end test "properly encodes ASCII_8BIT parameters into binary" do post :test_bar, params: { "foo" => "foo", "bar" => "bar", "baz" => "baz" } assert_response :success assert_equal "ASCII-8BIT", @response.body end test "properly encodes all ASCII_8BIT parameters into binary" do post :test_all_values_encoding, params: { "foo" => "foo", "bar" => "bar", "baz" => "baz" } assert_response :success assert_equal ["ASCII-8BIT"], JSON.parse(@response.body).uniq end test "does not raise an error when passed a param declared as ASCII-8BIT that contains invalid bytes" do get :test_bar, params: { "bar" => URI.parser.escape("bar\xE2baz".b) } assert_response :success assert_equal "ASCII-8BIT", @response.body end end