third_party/WebKit/LayoutTests/intersection-observer/same-document-zero-size-target.html - Issue 2645283008: IntersectionObserver: Always send an initial notification.

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Side by Side Diff: third_party/WebKit/LayoutTests/intersection-observer/same-document-zero-size-target.html

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 27 matching lines...) Expand all Loading...
38 });	38 });

39 observer.observe(target);	39 observer.observe(target);

40 entries = entries.concat(observer.takeRecords());	40 entries = entries.concat(observer.takeRecords());

41 assert_equals(entries.length, 0, "No initial notifications.");	41 assert_equals(entries.length, 0, "No initial notifications.");

42 runTestCycle(step0, "First rAF");	42 runTestCycle(step0, "First rAF");

43 }, "Observing a zero-area target.");	43 }, "Observing a zero-area target.");

44	44

45 function step0() {	45 function step0() {

46 document.scrollingElement.scrollTop = 300;	46 document.scrollingElement.scrollTop = 300;

47 runTestCycle(step1, "document.scrollingElement.scrollTop = 300");	47 runTestCycle(step1, "document.scrollingElement.scrollTop = 300");

48 assert_equals(entries.length, 0, "No notifications after first rAF.");	48 checkLastEntry(entries, 0, [8, 8, 708, 708, 0, 0, 0, 0, 0, 785, 0, 600, target ]);

49 }	49 }

50	50

51 function step1() {	51 function step1() {

52 document.scrollingElement.scrollTop = 100;	52 document.scrollingElement.scrollTop = 100;

53 runTestCycle(step2, "document.scrollingElement.scrollTop = 100");	53 runTestCycle(step2, "document.scrollingElement.scrollTop = 100");

54 checkLastEntry(entries, 0, [8, 8, 408, 408, 8, 8, 408, 408, 0, 785, 0, 600, ta rget]);	54 checkLastEntry(entries, 1, [8, 8, 408, 408, 8, 8, 408, 408, 0, 785, 0, 600, ta rget]);

55 }	55 }

56	56

57 function step2() {	57 function step2() {

58 document.scrollingElement.scrollTop = 0;	58 document.scrollingElement.scrollTop = 0;

59 checkLastEntry(entries, 1, [8, 8, 608, 608, 0, 0, 0, 0, 0, 785, 0, 600, target ]);	59 checkLastEntry(entries, 2, [8, 8, 608, 608, 0, 0, 0, 0, 0, 785, 0, 600, target ]);

60 }	60 }

61 </script>	61 </script>

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