third_party/WebKit/LayoutTests/intersection-observer/unclipped-root.html - Issue 2645283008: IntersectionObserver: Always send an initial notification.

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Issue 2645283008: IntersectionObserver: Always send an initial notification. (Closed)

Patch Set: Fix unit test Created 3 years, 10 months ago

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1 <!DOCTYPE html>	1 <!DOCTYPE html>

2 <script src="../resources/testharness.js"></script>	2 <script src="../resources/testharness.js"></script>

3 <script src="../resources/testharnessreport.js"></script>	3 <script src="../resources/testharnessreport.js"></script>

4 <script src="./resources/intersection-observer-test-utils.js"></script>	4 <script src="./resources/intersection-observer-test-utils.js"></script>

5	5

6 <style>	6 <style>

7 pre, #log {	7 pre, #log {

8 position: absolute;	8 position: absolute;

9 top: 0;	9 top: 0;

10 left: 200px;	10 left: 200px;

(...skipping 23 matching lines...) Expand all Loading...
34 target = document.getElementById("target");	34 target = document.getElementById("target");

35 assert_true(!!target, "target exists");	35 assert_true(!!target, "target exists");

36 var root = document.getElementById("root");	36 var root = document.getElementById("root");

37 assert_true(!!root, "root exists");	37 assert_true(!!root, "root exists");

38 var observer = new IntersectionObserver(function(changes) {	38 var observer = new IntersectionObserver(function(changes) {

39 entries = entries.concat(changes)	39 entries = entries.concat(changes)

40 }, {root: root});	40 }, {root: root});

41 observer.observe(target);	41 observer.observe(target);

42 entries = entries.concat(observer.takeRecords());	42 entries = entries.concat(observer.takeRecords());

43 assert_equals(entries.length, 0, "No initial notifications.");	43 assert_equals(entries.length, 0, "No initial notifications.");

44 runTestCycle(step0, "First rAF should not generate notifications.");	44 runTestCycle(step0, "First rAF.");

45 }, "Test that border bounding box is used to calculate intersection with a non-s crolling root.");	45 }, "Test that border bounding box is used to calculate intersection with a non-s crolling root.");

46	46

47 function step0() {	47 function step0() {

48 target.style.transform = "translateY(195px)";	48 target.style.transform = "translateY(195px)";

49 runTestCycle(step1, "target.style.transform = 'translateY(195px)'");	49 runTestCycle(step1, "target.style.transform = 'translateY(195px)'");

50 assert_equals(entries.length, 0, "No notifications after first rAF.");	50 checkLastEntry(entries, 0, [15, 115, 315, 415, 0, 0, 0, 0, 8, 182, 8, 222, tar get]);

51 }	51 }

52	52

53 function step1() {	53 function step1() {

54 target.style.transform = "";	54 target.style.transform = "";

55 checkLastEntry(entries, 0, [15, 115, 210, 310, 15, 115, 210, 222, 8, 182, 8, 2 22, target]);	55 checkLastEntry(entries, 1, [15, 115, 210, 310, 15, 115, 210, 222, 8, 182, 8, 2 22, target]);

56 }	56 }

57 </script>	57 </script>

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