blob: 50f9a229ea6bd99c38e2a40ab4219c1eb96e3cf5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
<!DOCTYPE HTML>
<meta charset=utf-8>
<title>Non-Tao Image Subsequent LCP candidates.
</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/largest-contentful-paint-helpers.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<body>
<script>
promise_test(async t => {
let small_image_path = '/images/green-100x50.png';
let big_image_path = '/images/green-256x256.png';
let non_tao_scheme = get_host_info().OTHER_ORIGIN;
// Load non-tao image with 0 opacity so it won't trigger an LCP entry.
big_image = await loadImage(non_tao_scheme + big_image_path, true);
// Load a smaller non-tao image with 0 opacity.
small_image = await loadImage(non_tao_scheme + small_image_path, true);
// Add text so that FCP is set.
add_text('text');
// wait for 1 animation frame so that FCP is set.
await raf();
// The url of text LCP element is empty.
lcp = await getLCPStartTime('');
// Rendered loaded image after FCP.
small_image.style.opacity = 1;
lcp = await getLCPStartTime(small_image_path);
fcp = getFCPStartTime();
checkLCPEntryForNonTaoImages({ 'lcp': lcp, 'fcp': fcp });
// This is to verify subsequent LCP candidates also have the start time set correctly.
big_image.style.opacity = 1;
lcp = await getLCPStartTime(big_image_path);
checkLCPEntryForNonTaoImages({ 'lcp': lcp, 'fcp': fcp });
}, 'Non-Tao Image Subsequent LCP candidates.')
</script>
</body>
|
