File: test_bug1831148.html

package info (click to toggle)
firefox 147.0.2-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 4,683,484 kB
  • sloc: cpp: 7,607,246; javascript: 6,533,185; ansic: 3,775,227; python: 1,415,393; xml: 634,561; asm: 438,951; java: 186,241; sh: 62,752; makefile: 18,079; objc: 13,092; perl: 12,808; yacc: 4,583; cs: 3,846; pascal: 3,448; lex: 1,720; ruby: 1,003; php: 436; lisp: 258; awk: 247; sql: 66; sed: 54; csh: 10; exp: 6
file content (46 lines) | stat: -rw-r--r-- 1,138 bytes parent folder | download | duplicates (2) 
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
 
<!DOCTYPE html>
<html>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<style>
#marker {
  width: 1px;
  height: 1px;
}
#outer {
  height: 1000px;
  background: #a0ffff;
  overflow: scroll;
}

#inner {
  height: 16593200px;
  background: #ffa0a0;
}

.log {
  white-space: pre;
}
</style>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1831148">Mozilla Bug 1831148</a>
<div id="marker"></div>
<div id="outer">
  <div id="inner"></div>
</div>
<script>
SimpleTest.waitForExplicitFinish();
addLoadEvent(() => {
  const interval = 20;
  const increment = outer.scrollHeight / interval;
  const offset = marker.getBoundingClientRect().bottom;
  for (let i = 0; i < interval; i++) {
    outer.scrollTop = i * increment;
    console.log(outer.scrollTop);
    // Shift to account for viewport coordinate shift.
    const bcrTop = -inner.getBoundingClientRect().top + offset;
    // Floating point value diverges from scrollTop.
    isfuzzy(bcrTop, outer.scrollTop, 1, "scrollTop and BCR top match");
  }
  SimpleTest.finish();
});
</script>