| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>window-onerror</title> |
| <style> |
| #result { |
| width: 100px; |
| height:100px; |
| background-color:#0047AB; |
| } |
| </style> |
| </head> |
| <body> |
| |
| <div id="result"></div> |
| |
| <script> |
| |
| function expect(condition, message) { |
| if (!condition) { |
| document.querySelector('#result').style.display = 'none'; |
| const fullMessage = `failed expectation at: |
| ${new Error().stack} |
| ${typeof message === 'undefined' ? '' : 'with message: ' + message}`; |
| console.error(fullMessage); |
| } |
| } |
| |
| let windowOnErrorWasCalled = false; |
| window.onerror = (message, filename, lineno, colno, error) => { |
| if (typeof message === 'object') { |
| // The code below is to work around Cobalt's window.onerror signature not being correct |
| // (although weird, the spec says you're supposed to expand the event into its attributes before |
| // dispatching it). It is still important to test the rest of window.onerror support, despite |
| // this known issue. |
| const errorEvent = message; |
| message = errorEvent.message; |
| filename = errorEvent.filename; |
| lineno = errorEvent.lineno; |
| colno = errorEvent.colno; |
| error = errorEvent.error; |
| } |
| |
| // We allow anything that ends with "myCoolMessage" to pass, Chrome/Firefox behavior differs here |
| // (Chrome: "Uncaught Error: myCoolMessage", Firefox: "Error: myCoolMessage"). |
| expect(/.*myCoolMessage/.test(message), message); |
| // Allow any filename that ends with "window-onerror.html", in order to not couple too heavily to |
| // the implementation of layout_tests. |
| expect(/.*window-onerror.html/.test(filename), filename); |
| expect(lineno === 72, lineno); |
| // The value of the column number is not standard across major browsers. |
| // Chrome: 1 without devtools open, 7 with devtools open. |
| // Edge: Always 1. |
| // Firefox: Always 7. |
| // Safari: 18. |
| expect(colno === 1 || colno === 7 || colno === 18, colno); |
| expect(typeof error === 'object', typeof error); |
| expect(String(error) === 'Error: myCoolMessage', String(error)); |
| |
| windowOnErrorWasCalled = true; |
| }; |
| |
| if (window.testRunner) { |
| window.testRunner.waitUntilDone(); |
| } |
| setTimeout(() => { |
| expect(windowOnErrorWasCalled); |
| if (window.testRunner) { |
| window.testRunner.notifyDone(); |
| } |
| }, 1); |
| throw new Error('myCoolMessage'); |
| |
| </script> |
| |
| </body> |
| </html> |
