| <!DOCTYPE html> |
| <script src='../resources/testharness.js'></script> |
| <script src='../resources/testharnessreport.js'></script> |
| <script> |
| function printMethodError(method, target) |
| { |
| try { |
| method.call(target); |
| assert_unreached(); |
| } catch(e) { |
| console.log(e); |
| } |
| } |
| |
| function printPromiseMethodError(method, target) |
| { |
| return method.call(target).then(assert_unreached, (e) => { |
| console.log(e); |
| }); |
| } |
| |
| function printGetterError(object, getterName, target) |
| { |
| const getter = Object.getOwnPropertyDescriptor(Object.getPrototypeOf(object), getterName).get; |
| printMethodError(getter, target); |
| } |
| |
| function printPromiseGetterError(object, getterName, target) |
| { |
| const getter = Object.getOwnPropertyDescriptor(Object.getPrototypeOf(object), getterName).get; |
| printPromiseMethodError(getter, target); |
| } |
| |
| promise_test(function(test) { |
| // This test prints exceptions to check the format of their messages. |
| var controller; |
| var stream = new ReadableStream({ |
| start: (c) => { |
| controller = c; |
| } |
| }); |
| var reader = stream.getReader(); |
| |
| var results = []; |
| |
| results.push(printPromiseMethodError(stream.cancel, controller)); |
| results.push(printMethodError(stream.getReader, controller)); |
| results.push(printMethodError(stream.tee, controller)); |
| results.push(printGetterError(stream, "locked", controller)); |
| |
| results.push(printMethodError(controller.enqueue, reader)); |
| results.push(printMethodError(controller.error, reader)); |
| results.push(printMethodError(controller.close, reader)); |
| results.push(printGetterError(controller, "desiredSize", reader)); |
| |
| results.push(printPromiseMethodError(reader.cancel, stream)); |
| results.push(printPromiseMethodError(reader.read, stream)); |
| results.push(printMethodError(reader.releaseLock, stream)); |
| results.push(printPromiseGetterError(reader, "closed", stream)); |
| |
| return Promise.all(results); |
| }, "Exercising TypeError messages in ReadableStream, ReadableStreamDefaultController and ReadableStreamDefaultReader"); |
| </script> |
