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| (Empty) | |
| 1 <!doctype html> |
| 2 <meta charset=utf-8> |
| 3 <title></title> |
| 4 <script src=/resources/testharness.js></script> |
| 5 <script src=/resources/testharnessreport.js></script> |
| 6 <!-- A window to work with that won't trigger the harness exception detection |
| 7 when we fire "error" events at it --> |
| 8 <iframe style="display: none"></iframe> |
| 9 <script> |
| 10 test(function() { |
| 11 var blob = new Blob([""]); |
| 12 // Most targets disabled for now until |
| 13 // https://github.com/whatwg/html/issues/2296 is sorted out. |
| 14 var targets = [ frames[0] /*, document, document.documentElement, |
| 15 new Worker(URL.createObjectURL(blob) */ ]; |
| 16 // Event constructors also mostly disabled until |
| 17 // https://github.com/whatwg/html/issues/2296 is sorted out. |
| 18 var eventCtors = [ /* Event, */ ErrorEvent /*, MouseEvent */ ]; |
| 19 var values = [true, false, "", "abc", {}, 0, 1, -1, null, undefined, |
| 20 2.5, NaN, Infinity, Symbol.toStringTag ]; |
| 21 // Event types also mostly disabled pending |
| 22 // https://github.com/whatwg/html/issues/2296 |
| 23 var eventTypes = [ "error"/*, "click", "load"*/ ]; |
| 24 |
| 25 // Variables that keep track of which subtest we're running. |
| 26 var curTarget; |
| 27 var curValue; |
| 28 var curCtor; |
| 29 var curType; |
| 30 |
| 31 function defaultPreventedTester(event) { |
| 32 var expectedValue; |
| 33 if (curTarget === frames[0] && |
| 34 curCtor === ErrorEvent && |
| 35 curValue === true && |
| 36 curType == "error") { |
| 37 expectedValue = true; |
| 38 } else { |
| 39 // This will need adjusting once we allow more targets and event |
| 40 // constructors above! |
| 41 expectedValue = false; |
| 42 } |
| 43 var valueRepr; |
| 44 if (typeof curValue == "string") { |
| 45 valueRepr = '"' + curValue + '"'; |
| 46 } else { |
| 47 valueRepr = String(curValue); |
| 48 } |
| 49 test(function() { |
| 50 assert_equals(event.defaultPrevented, expectedValue); |
| 51 }, "Returning " + valueRepr + |
| 52 " from " + String(curTarget) + "'s on" + curType + |
| 53 " event handler while " + curCtor.name + |
| 54 " is firing should" + |
| 55 (expectedValue ? "" : " not") + |
| 56 " cancel the event"); |
| 57 } |
| 58 |
| 59 for (curCtor of eventCtors) { |
| 60 for (curTarget of targets) { |
| 61 for (curType of eventTypes) { |
| 62 for (curValue of values) { |
| 63 // We have to make sure that defaultPreventedTester is added after |
| 64 // our event handler. |
| 65 curTarget["on" + curType] = function() { return curValue; } |
| 66 curTarget.addEventListener(curType, defaultPreventedTester); |
| 67 var e = new curCtor(curType, { cancelable: true }); |
| 68 curTarget.dispatchEvent(e); |
| 69 curTarget["on" + curType] = null; |
| 70 curTarget.removeEventListener(curType, defaultPreventedTester); |
| 71 } |
| 72 } |
| 73 } |
| 74 } |
| 75 }, "event handler cancellation behavior"); |
| 76 </script> |
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Chromium Code Reviews
Issue 2665073003:
Import wpt@cd5cce9780f84cee679919679b8199084ea96d54 (Closed)
