| <!doctype html> |
| <title>inserting another source before the candidate</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id=log></div> |
| <script> |
| var v; |
| function createSource(src) { |
| var source = document.createElement('source'); |
| source.src = src; |
| return source; |
| } |
| var t = async_test(function(t) { |
| v = document.createElement('video'); |
| v.addEventListener('loadstart', t.step_func(function() { |
| assert_equals(v.currentSrc.substr(v.currentSrc.lastIndexOf('#')), '#a'); |
| t.done(); |
| }), false); |
| v.appendChild(createSource('#a')); // invokes resource selection |
| }); |
| </script> |
| <!-- now resource selection algorithm will continue its sync section (the </script> tag below provides a stable state) --> |
| <!-- #a is candidate --> |
| <!-- pointer is between #a and the end of the list --> |
| <script> |
| t.step(function() { |
| v.insertBefore(createSource('#b'), v.firstChild); // pointer is unchanged, #a is still candidate |
| }); |
| </script> |
