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
|
<!DOCTYPE html>
<title>An img's current request should be updated in a microtask after selecting an image source</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<script>
async_test(function(t) {
const picture = document.createElement("picture");
const nonMatchingSource = document.createElement("source");
nonMatchingSource.media = "not all";
nonMatchingSource.srcset = "data:,a";
picture.append(nonMatchingSource);
const matchingSource = document.createElement("source");
matchingSource.media = "all";
matchingSource.srcset = "data:,b";
picture.append(matchingSource);
const img = document.createElement("img");
img.src = "data:,c";
assert_equals(img.currentSrc, "", "after assigning to img.src but before the corresponding microtask is run");
queueMicrotask(t.step_func(function() {
assert_equals(img.currentSrc, "data:,c", "after assigning to img.src and after corresponding microtask is run");
picture.append(img);
assert_equals(img.currentSrc, "data:,c", "after appending img to picture but before the corresponding microtask is run");
queueMicrotask(t.step_func(function() {
assert_equals(img.currentSrc, "data:,b", "after appending img to picture and after the corresponding microtask is run");
t.done();
}));
}));
}, "currentSrc is updated only after the microtask that updates the current request is run");
</script>
|
