require "abstract_unit" class JsonParamsParsingTest < ActionDispatch::IntegrationTest class TestController < ActionController::Base class << self attr_accessor :last_request_parameters end def parse self.class.last_request_parameters = request.request_parameters head :ok end end def teardown TestController.last_request_parameters = nil end test "parses json params for application json" do assert_parses( {"person" => {"name" => "David"}}, "{\"person\": {\"name\": \"David\"}}", "CONTENT_TYPE" => "application/json" ) end test "parses boolean and number json params for application json" do assert_parses( {"item" => {"enabled" => false, "count" => 10}}, "{\"item\": {\"enabled\": false, \"count\": 10}}", "CONTENT_TYPE" => "application/json" ) end test "parses json params for application jsonrequest" do assert_parses( {"person" => {"name" => "David"}}, "{\"person\": {\"name\": \"David\"}}", "CONTENT_TYPE" => "application/jsonrequest" ) end test "does not parse unregistered media types such as application/vnd.api+json" do assert_parses( {}, "{\"person\": {\"name\": \"David\"}}", "CONTENT_TYPE" => "application/vnd.api+json" ) end test "nils are stripped from collections" do assert_parses( {"person" => []}, "{\"person\":[null]}", "CONTENT_TYPE" => "application/json" ) assert_parses( {"person" => ["foo"]}, "{\"person\":[\"foo\",null]}", "CONTENT_TYPE" => "application/json" ) assert_parses( {"person" => []}, "{\"person\":[null, null]}", "CONTENT_TYPE" => "application/json" ) end test "logs error if parsing unsuccessful" do with_test_routing do output = StringIO.new json = "[\"person]\": {\"name\": \"David\"}}" post "/parse", params: json, headers: { "CONTENT_TYPE" => "application/json", "action_dispatch.show_exceptions" => true, "action_dispatch.logger" => ActiveSupport::Logger.new(output) } assert_response :bad_request output.rewind && err = output.read assert err =~ /Error occurred while parsing request parameters/ end end test "occurring a parse error if parsing unsuccessful" do with_test_routing do begin $stderr = StringIO.new # suppress the log json = "[\"person]\": {\"name\": \"David\"}}" exception = assert_raise(ActionDispatch::ParamsParser::ParseError) { post "/parse", json, "CONTENT_TYPE" => "application/json", "action_dispatch.show_exceptions" => false } assert_equal JSON::ParserError, exception.cause.class assert_equal exception.cause.message, exception.message ensure $stderr = STDERR end end end test "raw_post is not empty for JSON request" do with_test_routing do post "/parse", params: '{"posts": [{"title": "Post Title"}]}', headers: { "CONTENT_TYPE" => "application/json" } assert_equal '{"posts": [{"title": "Post Title"}]}', request.raw_post end end private def assert_parses(expected, actual, headers = {}) with_test_routing do post "/parse", params: actual, headers: headers assert_response :ok assert_equal(expected, TestController.last_request_parameters) end end def with_test_routing with_routing do |set| set.draw do ActiveSupport::Deprecation.silence do post ":action", to: ::JsonParamsParsingTest::TestController end end yield end end end class RootLessJSONParamsParsingTest < ActionDispatch::IntegrationTest class UsersController < ActionController::Base wrap_parameters format: :json class << self attr_accessor :last_request_parameters, :last_parameters end def parse self.class.last_request_parameters = request.request_parameters self.class.last_parameters = params.to_unsafe_h head :ok end end def teardown UsersController.last_request_parameters = nil end test "parses json params for application json" do assert_parses( {"user" => {"username" => "sikachu"}, "username" => "sikachu"}, "{\"username\": \"sikachu\"}", "CONTENT_TYPE" => "application/json" ) end test "parses json params for application jsonrequest" do assert_parses( {"user" => {"username" => "sikachu"}, "username" => "sikachu"}, "{\"username\": \"sikachu\"}", "CONTENT_TYPE" => "application/jsonrequest" ) end test "parses json with non-object JSON content" do assert_parses( {"user" => {"_json" => "string content" }, "_json" => "string content" }, "\"string content\"", "CONTENT_TYPE" => "application/json" ) end test "parses json params after custom json mime type registered" do begin Mime::Type.unregister :json Mime::Type.register "application/json", :json, %w(application/vnd.rails+json) assert_parses( {"user" => {"username" => "meinac"}, "username" => "meinac"}, "{\"username\": \"meinac\"}", "CONTENT_TYPE" => "application/json" ) ensure Mime::Type.unregister :json Mime::Type.register "application/json", :json, %w( text/x-json application/jsonrequest ) end end test "parses json params after custom json mime type registered with synonym" do begin Mime::Type.unregister :json Mime::Type.register "application/json", :json, %w(application/vnd.rails+json) assert_parses( {"user" => {"username" => "meinac"}, "username" => "meinac"}, "{\"username\": \"meinac\"}", "CONTENT_TYPE" => "application/vnd.rails+json" ) ensure Mime::Type.unregister :json Mime::Type.register "application/json", :json, %w( text/x-json application/jsonrequest ) end end private def assert_parses(expected, actual, headers = {}) with_test_routing(UsersController) do post "/parse", params: actual, headers: headers assert_response :ok assert_equal(expected, UsersController.last_request_parameters) assert_equal(expected.merge("action" => "parse"), UsersController.last_parameters) end end def with_test_routing(controller) with_routing do |set| set.draw do ActiveSupport::Deprecation.silence do post ":action", to: controller end end yield end end end