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| 1 <!DOCTYPE html> |
| 2 <script src="/resources/testharness.js"></script> |
| 3 <script src="/resources/testharnessreport.js"></script> |
| 4 <script src="./resources/intersection-observer-test-utils.js"></script> |
| 5 |
| 6 <style> |
| 7 pre, #log { |
| 8 position: absolute; |
| 9 top: 0; |
| 10 left: 200px; |
| 11 } |
| 12 #target { |
| 13 width: 0px; |
| 14 height: 0px; |
| 15 position: fixed; |
| 16 top: -1000px; |
| 17 } |
| 18 </style> |
| 19 |
| 20 <div id='target'></div> |
| 21 |
| 22 <script> |
| 23 var vw = document.documentElement.clientWidth; |
| 24 var vh = document.documentElement.clientHeight; |
| 25 |
| 26 var entries = []; |
| 27 |
| 28 runTestCycle(function() { |
| 29 var target = document.getElementById('target'); |
| 30 assert_true(!!target, "target exists"); |
| 31 var observer = new IntersectionObserver(function(changes) { |
| 32 entries = entries.concat(changes) |
| 33 }); |
| 34 observer.observe(target); |
| 35 entries = entries.concat(observer.takeRecords()); |
| 36 assert_equals(entries.length, 0, "No initial notifications."); |
| 37 runTestCycle(step0, "First rAF."); |
| 38 }, "A zero-area hidden target should not be intersecting."); |
| 39 |
| 40 function step0() { |
| 41 checkLastEntry(entries, 0, [8, 8, -1000, -1000, 0, 0, 0, 0, 0, vw, 0, vh, fals
e]); |
| 42 } |
| 43 </script> |
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