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

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

Patch Set: 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;

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50 }, {root: root});	50 }, {root: root});

51 observer.observe(target);	51 observer.observe(target);

52 entries = entries.concat(observer.takeRecords());	52 entries = entries.concat(observer.takeRecords());

53 assert_equals(entries.length, 0, "No initial notifications.");	53 assert_equals(entries.length, 0, "No initial notifications.");

54 runTestCycle(step0, "First rAF");	54 runTestCycle(step0, "First rAF");

55 }, "Verify that not-intersecting notifications are sent when a target is removed from the DOM tree.");	55 }, "Verify that not-intersecting notifications are sent when a target is removed from the DOM tree.");

56	56

57 function step0() {	57 function step0() {

58 root.scrollTop = 150;	58 root.scrollTop = 150;

59 runTestCycle(step1, "root.scrollTop = 150");	59 runTestCycle(step1, "root.scrollTop = 150");

60 assert_equals(entries.length, 0, "No notifications after first rAF.");	60 checkLastEntry(entries, 0, [11, 111, 311, 411, 0, 0, 0, 0, 11, 111, 11, 211, t arget]);

61 }	61 }

62	62

63 function step1() {	63 function step1() {

64 root.removeChild(target);	64 root.removeChild(target);

65 runTestCycle(step2, "root.removeChild(target).");	65 runTestCycle(step2, "root.removeChild(target).");

66 checkLastEntry(entries, 0, [11, 111, 161, 261, 11, 111, 161, 211, 11, 111, 11, 211, target]);	66 checkLastEntry(entries, 1, [11, 111, 161, 261, 11, 111, 161, 211, 11, 111, 11, 211, target]);

67 }	67 }

68	68

69 function step2() {	69 function step2() {

70 root.scrollTop = 0;	70 root.scrollTop = 0;

71 root.insertBefore(target, trailingSpace);	71 root.insertBefore(target, trailingSpace);

72 runTestCycle(step3, "root.insertBefore(target, trailingSpace).");	72 runTestCycle(step3, "root.insertBefore(target, trailingSpace).");

73 checkLastEntry(entries, 1, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, target]);	73 checkLastEntry(entries, 2, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, target]);

74 }	74 }

75	75

76 function step3() {	76 function step3() {

77 root.scrollTop = 150;	77 root.scrollTop = 150;

78 runTestCycle(step4, "root.scrollTop = 150 after reinserting target.");	78 runTestCycle(step4, "root.scrollTop = 150 after reinserting target.");

79 checkLastEntry(entries, 1);	79 checkLastEntry(entries, 2);

80 }	80 }

81	81

82 function step4() {	82 function step4() {

83 checkLastEntry(entries, 2, [11, 111, 161, 261, 11, 111, 161, 211, 11, 111, 11, 211, target]);	83 checkLastEntry(entries, 3, [11, 111, 161, 261, 11, 111, 161, 211, 11, 111, 11, 211, target]);

84 }	84 }

85 </script>	85 </script>

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