| <!DOCTYPE html> |
| <title>IntersectionObserver ratio with fractional bounds</title> |
| <link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1020466"> |
| <meta name="viewport" content="width=device-width,initial-scale=1"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| body { |
| margin: 0; |
| } |
| #container { |
| display: flex; |
| } |
| #left { |
| height: 100px; |
| width: 0.88875%; |
| background: lightblue; |
| } |
| #target { |
| height: 100px; |
| width: 99.11125%; |
| background: rebeccapurple; |
| } |
| </style> |
| |
| <div id="container"> |
| <div id="left"></div> |
| <div id="target"></div> |
| </div> |
| |
| <script> |
| async_test(function(t) { |
| let target = document.getElementById("target"); |
| let observer = new IntersectionObserver(t.step_func_done(function(entries) { |
| assert_equals(entries.length, 1); |
| assert_equals(entries[0].intersectionRatio, 1); |
| assert_equals(entries[0].isIntersecting, true); |
| })); |
| observer.observe(target); |
| }); |
| </script> |
