File: sec-ch-width-auto-sizes-picture.https.html

package info (click to toggle)
firefox-esr 140.5.0esr-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 4,538,920 kB
  • sloc: cpp: 7,381,527; javascript: 6,388,905; ansic: 3,710,087; python: 1,393,776; xml: 628,165; asm: 426,916; java: 184,004; sh: 65,744; makefile: 19,302; objc: 13,059; perl: 12,912; yacc: 4,583; cs: 3,846; pascal: 3,352; lex: 1,720; ruby: 1,226; exp: 762; php: 436; lisp: 258; awk: 247; sql: 66; sed: 54; csh: 10
file content (39 lines) | stat: -rw-r--r-- 1,187 bytes parent folder | download | duplicates (14) 
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
 
<!DOCTYPE html>
<meta charset="utf-8">
<meta http-equiv="Delegate-CH" content="Sec-CH-Width">
<title>Tests Sec-CH-Width with auto sizes and picture</title>
<link rel="help" href="https://wicg.github.io/responsive-image-client-hints/#sec-ch-width">
<link rel="help" href="https://html.spec.whatwg.org/#sizes-attributes">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
  setup({explicit_done: true});

  function run() {
    test(() => {
      const testImage = document.getElementsByTagName('img')[0];
      // Spec: sec-ch-width MUST be an integer greater than or equal to 0.
      const width = Math.ceil(50 * devicePixelRatio);
      assert_equals(testImage.naturalWidth, 2 * width);
      assert_equals(testImage.naturalHeight, 3 * width);
    }, 'Sec-CH-Width is set for lazy auto sizes');
    done();
  }
</script>

<picture>
  <source
    srcset="resources/2x3-svg-scaled-by-sec-ch-width.py 50w"
    sizes="auto"
    width="100"
    height="100">
  <img
    onload="run()"
    loading="lazy"
    sizes="auto"
    src="fail.png"
    width="100"
    height="100"
    style="width: 50px; height: 50px;">
</picture>