third_party/WebKit/LayoutTests/intersection-observer/same-document-zero-size-target.html - Issue 2560253004: IntersectionObserver: convert tests to testharness.js

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Issue 2560253004: IntersectionObserver: convert tests to testharness.js (Closed)

Patch Set: Address comments Created 3 years, 11 months ago

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

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

3 <script src="../resources/intersection-observer-helper-functions.js"></script>	3 <script src="../resources/testharnessreport.js"></script>

4 <div style="width:100%; height:700px;"></div>	4 <script src="./resources/intersection-observer-test-utils.js"></script>

5 <div id="target" style="background-color: green; width:0px; height:0px"></div>	5

6 <div style="width:100%; height:700px;"></div>	6 <style>

	7 pre, #log {

	8 position: absolute;

	9 top: 0;

	10 left: 200px;

	11 }

	12 .spacer {

	13 height: 700px;

	14 }

	15 #target {

	16 width: 0px;

	17 height: 0px;

	18 background-color: green;

	19 }

	20 </style>

	21

	22 <div class="spacer"></div>

	23 <div id="target"></div>

	24 <div class="spacer"></div>

7	25

8 <script>	26 <script>

9 description("Intersection observer test with zero-size target element.");

10 var target = document.getElementById("target");

11 var entries = [];	27 var entries = [];

12 var observer = new IntersectionObserver(changes => { entries = entries.concat(ch anges) }, {});	28 var target;

13	29

14 onload = function() {	30 runTestCycle(function() {

	31 assert_equals(window.innerWidth, 800, "Window must be 800 pixels wide.");

	32 assert_equals(window.innerHeight, 600, "Window must be 600 pixels high.");

	33

	34 target = document.getElementById("target");

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

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

	37 entries = entries.concat(changes)

	38 });

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

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

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

	42 runTestCycle(step0, "First rAF");

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

	44

	45 function step0() {

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

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

20 };	48 assert_equals(entries.length, 0, "No notifications after first rAF.");

	49 }

21	50

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

23 shouldBeEqualToNumber("entries.length", 1);

24 if (entries.length > 0) {

25 shouldBeEqualToNumber("entries[0].boundingClientRect.left", 8);

26 shouldBeEqualToNumber("entries[0].boundingClientRect.right", 8);

27 shouldBeEqualToNumber("entries[0].boundingClientRect.top", 408);

28 shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 408);

29 shouldBeEqualToNumber("entries[0].intersectionRect.left", 8);

30 shouldBeEqualToNumber("entries[0].intersectionRect.right", 8);

31 shouldBeEqualToNumber("entries[0].intersectionRect.top", 408);

32 shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 408);

33 shouldBeEqualToNumber("entries[0].rootBounds.left", 0);

34 shouldBeEqualToNumber("entries[0].rootBounds.right", 785);

35 shouldBeEqualToNumber("entries[0].rootBounds.top", 0);

36 shouldBeEqualToNumber("entries[0].rootBounds.bottom", 600);

37 shouldEvaluateToSameObject("entries[0].target", target);

38

39 // ClientRect members of IntersectionObserverEntry should be stable.

40 shouldEvaluateToSameObject("entries[0].boundingClientRect", entries[0].bound ingClientRect);

41 shouldEvaluateToSameObject("entries[0].intersectionRect", entries[0].interse ctionRect);

42 shouldEvaluateToSameObject("entries[0].rootBounds", entries[0].rootBounds);

43 }

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

45 waitForNotification(step2);	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]);

46 }	55 }

47	56

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

49 shouldBeEqualToNumber("entries.length", 2);

50 if (entries.length > 1) {

51 shouldBeEqualToNumber("entries[1].boundingClientRect.left", 8);

52 shouldBeEqualToNumber("entries[1].boundingClientRect.right", 8);

53 shouldBeEqualToNumber("entries[1].boundingClientRect.top", 608);

54 shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 608);

55 shouldBeEqualToNumber("entries[1].intersectionRect.left", 0);

56 shouldBeEqualToNumber("entries[1].intersectionRect.right", 0);

57 shouldBeEqualToNumber("entries[1].intersectionRect.top", 0);

58 shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0);

59 shouldBeEqualToNumber("entries[1].rootBounds.left", 0);

60 shouldBeEqualToNumber("entries[1].rootBounds.right", 785);

61 shouldBeEqualToNumber("entries[1].rootBounds.top", 0);

62 shouldBeEqualToNumber("entries[1].rootBounds.bottom", 600);

63 shouldEvaluateToSameObject("entries[1].target", target);

64 }

65 finishJSTest();

66 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 ]);

67 }	60 }

68 </script>	61 </script>

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