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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 id="beforeFrame" style="width:100%; height:700px;"></div> | 4 <script src="./resources/intersection-observer-test-utils.js"></script> |
5 <div id="afterFrame" style="width:100%; height:700px;"></div> | 5 |
6 <style> | |
7 pre, #log { | |
8 position: absolute; | |
9 top: 0; | |
10 left: 200px; | |
11 } | |
12 .spacer { | |
13 height: 700px; | |
14 } | |
15 | |
16 </style> | |
17 <div id="leading-space" class="spacer"></div> | |
18 <div id="trailing-space" class="spacer"></div> | |
6 | 19 |
7 <script> | 20 <script> |
8 description("Test that intersection observer time is relative to time in the cal lback context."); | 21 // Pick this number to be comfortably greater than the length of two frames at 6 0Hz. |
22 var timeSkew = 40; | |
23 | |
9 var topWindowEntries = []; | 24 var topWindowEntries = []; |
10 var iframeWindowEntries = []; | 25 var iframeWindowEntries = []; |
11 var topWindowObserver; | |
12 var iframeWindowObserver; | |
13 var targetIframe; | 26 var targetIframe; |
14 var iframeScroller; | 27 var topWindowTimeBeforeNotification; |
15 var topWindowTime; | 28 var iframeWindowTimeBeforeNotification; |
16 var iframeWindowTime; | |
17 var timestampTolerance = 24; | |
18 | 29 |
19 function step0() { | 30 async_test(function(t) { |
20 // Test results are only significant if there's a sufficient gap between | 31 assert_equals(window.innerWidth, 800, "Window must be 800 pixels wide."); |
21 // top window time and iframe window time. | 32 assert_equals(window.innerHeight, 600, "Window must be 600 pixels high."); |
22 topWindowTime = performance.now(); | |
23 iframeWindowTime = targetIframe.contentWindow.performance.now(); | |
24 shouldBeGreaterThan("topWindowTime - iframeWindowTime", "2.5 * timestampTolera nce"); | |
25 | 33 |
26 shouldBeEqualToNumber("topWindowEntries.length", 0); | 34 setTimeout(function() { |
foolip
2017/01/11 13:42:53
Wrap in t.step_func here and below.
| |
27 shouldBeEqualToNumber("iframeWindowEntries.length", 0); | 35 targetIframe = document.createElement("iframe"); |
36 assert_true(!!targetIframe, "iframe exists"); | |
37 targetIframe.src = "resources/timestamp-subframe.html"; | |
38 var trailingSpace = document.getElementById("trailing-space"); | |
39 assert_true(!!trailingSpace, "trailing-space exists"); | |
40 trailingSpace.parentNode.insertBefore(targetIframe, trailingSpace); | |
41 targetIframe.onload = function() { | |
42 var target = targetIframe.contentDocument.getElementById("target"); | |
43 var iframeScroller = targetIframe.contentDocument.scrollingElement; | |
44 | |
45 // Observer created here, callback created in iframe context. Timestamps should be | |
46 // from this window. | |
47 var observer = new IntersectionObserver( | |
48 targetIframe.contentDocument.createObserverCallback(topWindowEntries), {}); | |
49 assert_true(!!observer, "Observer exists"); | |
50 observer.observe(target); | |
51 | |
52 // Callback created here, observer created in iframe. Timestamps should b e | |
53 // from iframe window. | |
54 observer = targetIframe.contentDocument.createObserver(function(newEntries ) { | |
55 » iframeWindowEntries = iframeWindowEntries.concat(newEntries); | |
56 }); | |
57 observer.observe(target); | |
58 runTestCycle(step1, "First rAF after iframe is loaded."); | |
59 t.done(); | |
60 }; | |
61 }, timeSkew); | |
62 }, "Check that timestamps correspond to the to execution context that created th e observer."); | |
63 | |
64 function step1() { | |
28 document.scrollingElement.scrollTop = 200; | 65 document.scrollingElement.scrollTop = 200; |
29 iframeScroller.scrollTop = 250; | 66 targetIframe.contentDocument.scrollingElement.scrollTop = 250; |
30 waitForNotification(step1); | 67 topWindowTimeBeforeNotification = performance.now(); |
68 iframeWindowTimeBeforeNotification = targetIframe.contentWindow.performance.no w(); | |
69 runTestCycle(step2, "Generate notifications."); | |
70 assert_equals(topWindowEntries.length, 0, "No notifications to top window obse rver."); | |
71 assert_equals(iframeWindowEntries.length, 0, "No notifications to iframe obser ver."); | |
31 } | 72 } |
32 | 73 |
33 function step1() { | 74 function step2() { |
34 topWindowTime = performance.now(); | 75 document.scrollingElement.scrollTop = 0; |
35 iframeWindowTime = targetIframe.contentWindow.performance.now(); | 76 var topWindowTimeAfterNotification = performance.now(); |
36 shouldBeEqualToNumber("topWindowEntries.length", 1); | 77 var iframeWindowTimeAfterNotification = targetIframe.contentWindow.performance .now(); |
37 if (topWindowEntries.length) | |
38 shouldBeCloseTo("topWindowEntries[0].time", "topWindowTime", timestampTolera nce); | |
39 | 78 |
40 shouldBeEqualToNumber("iframeWindowEntries.length", 1); | 79 // Test results are only significant if there's a gap between |
41 if (iframeWindowEntries.length) { | 80 // top window time and iframe window time. |
42 shouldBeCloseTo("iframeWindowEntries[0].time", "iframeWindowTime", timestamp Tolerance); | 81 assert_greater_than(topWindowTimeBeforeNotification, iframeWindowTimeAfterNoti fication, |
43 } | 82 » » "Time ranges for top and iframe windows are disjoint."); |
foolip
2017/01/11 13:42:53
I see red » symbols, looks like some tabs here and
| |
44 waitForNotification(finishJSTest); | 83 |
45 document.scrollingElement.scrollTop = 0; | 84 assert_equals(topWindowEntries.length, 1, "Top window observer has one notific ation."); |
85 assert_between_inclusive( | |
86 topWindowEntries[0].time, | |
87 topWindowTimeBeforeNotification, | |
88 topWindowTimeAfterNotification, | |
89 "Notification to top window observer is within the expected range."); | |
90 | |
91 assert_equals(iframeWindowEntries.length, 1, "Iframe observer has one notifica tion."); | |
92 assert_between_inclusive( | |
93 iframeWindowEntries[0].time, | |
94 iframeWindowTimeBeforeNotification, | |
95 iframeWindowTimeAfterNotification, | |
96 "Notification to iframe observer is within the expected range."); | |
46 } | 97 } |
47 | |
48 function runTest() { | |
49 var target = targetIframe.contentDocument.getElementById("target"); | |
50 iframeScroller = targetIframe.contentDocument.scrollingElement; | |
51 | |
52 // Observer created here, callback created in iframe context. Timestamps shou ld be | |
53 // from this window. | |
54 topWindowObserver = new IntersectionObserver(targetIframe.contentDocument.crea teObserverCallback(topWindowEntries), {}); | |
55 topWindowObserver.observe(target); | |
56 | |
57 // Callback created here, observer created in iframe. Timestamps should be | |
58 // from iframe window. | |
59 iframeWindowObserver = targetIframe.contentDocument.createObserver(function(ne wEntries) { | |
60 for (var i = 0; i < newEntries.length; i++) | |
61 iframeWindowEntries.push(newEntries[i]); | |
62 }); | |
63 iframeWindowObserver.observe(target); | |
64 | |
65 waitForNotification(step0); | |
66 } | |
67 | |
68 onload = function() { | |
69 setTimeout(function() { | |
70 targetIframe = document.createElement("iframe"); | |
71 targetIframe.src = "../resources/intersection-observer-timestamp-subframe.ht ml"; | |
72 targetIframe.style = "height: 100px; overflow-y: scroll"; | |
73 var afterFrame = document.getElementById("afterFrame"); | |
74 afterFrame.parentNode.insertBefore(targetIframe, afterFrame); | |
75 targetIframe.onload = runTest; | |
76 }, 2.5 * timestampTolerance); | |
77 }; | |
78 | |
79 </script> | 98 </script> |
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