| // META: script=/common/utils.js |
| |
| // .stack properties on errors are unspecified, but are present in most |
| // browsers, most of the time. https://github.com/tc39/proposal-error-stacks/ tracks standardizing them. |
| // Tests will pass automatically if the .stack property isn't present. |
| |
| stackTests(() => { |
| return new Error('some message'); |
| }, 'page-created Error'); |
| |
| stackTests(() => { |
| return new DOMException('InvalidStateError', 'some message'); |
| }, 'page-created DOMException'); |
| |
| stackTests(() => { |
| try { |
| Object.defineProperty(); |
| } catch (e) { |
| return e; |
| } |
| }, 'JS-engine-created TypeError'); |
| |
| stackTests(() => { |
| try { |
| HTMLParagraphElement.prototype.align; |
| } catch (e) { |
| return e; |
| } |
| }, 'web API-created TypeError'); |
| |
| stackTests(() => { |
| try { |
| document.createElement(''); |
| } catch (e) { |
| return e; |
| } |
| }, 'web API-created DOMException'); |
| |
| function stackTests(errorFactory, description) { |
| async_test(t => { |
| const error = errorFactory(); |
| const originalStack = error.stack; |
| |
| if (!originalStack) { |
| t.done(); |
| return; |
| } |
| |
| const worker = new Worker('resources/echo-worker.js'); |
| worker.onmessage = t.step_func_done(e => { |
| assert_equals(e.data.stack, originalStack); |
| }); |
| |
| worker.postMessage(error); |
| }, description + ' (worker)'); |
| |
| async_test(t => { |
| const thisTestId = token(); |
| |
| const error = errorFactory(); |
| const originalStack = error.stack; |
| |
| if (!originalStack) { |
| t.done(); |
| return; |
| } |
| |
| const iframe = document.createElement('iframe'); |
| window.addEventListener('message', t.step_func(e => { |
| if (e.data.testId === thisTestId) { |
| assert_equals(e.data.error.stack, originalStack); |
| t.done(); |
| } |
| })); |
| |
| iframe.onload = t.step_func(() => { |
| iframe.contentWindow.postMessage({ error, testId: thisTestId }, "*"); |
| }); |
| |
| const crossSiteEchoIFrame = new URL('resources/echo-iframe.html', location.href); |
| crossSiteEchoIFrame.hostname = '{{hosts[alt][www1]}}'; |
| iframe.src = crossSiteEchoIFrame; |
| document.body.append(iframe); |
| }, description + ' (cross-site iframe)'); |
| } |