| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="../resources/js-test.js"></script> |
| <script> |
| description("Tests that an observation is received when calling IntersectionObserver.observe() with a disconnected target."); |
| jsTestIsAsync = true; |
| |
| let receivedObservations = false; |
| onload = () => { |
| let intersectionObserver = new IntersectionObserver((_observations) => { |
| gc(); |
| observations = _observations; |
| |
| shouldBeFalse("receivedObservations"); |
| receivedObservations = true; |
| |
| shouldBe("observations.length", "1"); |
| shouldBeEqualToString("observations[0].target.tagName", "DIV"); |
| shouldBeFalse("observations[0].isIntersecting"); |
| shouldBe("observations[0].intersectionRatio", "0.0"); |
| shouldBe("observations[0].target.foo", "1"); |
| setTimeout(finishJSTest, 100); |
| }); |
| let div = document.createElement('div'); |
| div.foo = 1; |
| intersectionObserver.observe(div); |
| div = null; |
| gc(); |
| setTimeout(gc, 0); |
| }; |
| </script> |
| </body> |
| </html> |
