image-decode-iframe.html (2054B)
1 <!DOCTYPE html> 2 <meta charset=utf-8> 3 <meta name="timeout" content="long"> 4 <title>HTMLImageElement.prototype.decode(), iframe tests.</title> 5 <link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org"> 6 <link rel="help" href="https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-decode"> 7 <script src="/resources/testharness.js"></script> 8 <script src="/resources/testharnessreport.js"></script> 9 10 <iframe id="frame_loaded" srcdoc="iframe"></iframe> 11 <iframe id="frame_notloaded" srcdoc="iframe"></iframe> 12 <iframe id="frame_notloaded2" srcdoc="iframe"></iframe> 13 14 <script> 15 "use strict"; 16 17 promise_test(function() { 18 return new Promise(function(resolve, reject) { 19 var frame = document.getElementById("frame_loaded"); 20 var img = frame.contentDocument.createElement("img"); 21 img.src = "/images/green.png"; 22 img.onload = function() { 23 // At this point the frame which created the img is removed, so decode() should fail. 24 frame.parentNode.removeChild(frame); 25 img.decode().then(function() { 26 assert_unreached("Unexpected success"); 27 }, function() { 28 resolve(); 29 }); 30 }; 31 }); 32 }, document.title + " Decode from removed iframe fails (loaded img)"); 33 34 promise_test(function(t) { 35 var frame = document.getElementById("frame_notloaded"); 36 var img = frame.contentDocument.createElement("img"); 37 img.src = "/images/green.png"; 38 frame.parentNode.removeChild(frame); 39 var promise = img.decode(); 40 return promise_rejects_dom(t, "EncodingError", promise); 41 }, document.title + " Decode from removed iframe fails (img not loaded)"); 42 43 promise_test(function(t) { 44 var frame = document.getElementById("frame_notloaded2"); 45 var img = frame.contentDocument.createElement("img"); 46 img.src = "/images/green.png"; 47 // First request a promise, then remove the iframe. 48 var promise = img.decode(); 49 frame.parentNode.removeChild(frame); 50 return promise_rejects_dom(t, "EncodingError", promise); 51 }, document.title + " Decode from iframe, later removed, fails (img not loaded)"); 52 53 </script>