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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
<!doctype html>
<meta charset=utf-8>
<title>Dispatching idle callbacks should be able to be suspended and then resumed</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id="log"></div>
<script>
function withEventListener(target, event, handler) {
handler = handler || (e => e);
return new Promise(resolve => {
let wrapper = function(e) {
let result = handler(e);
if (!result) {
return;
}
resolve(result);
}
target.addEventListener(event, wrapper, { once: true });
});
}
function makePostBackUrl(name) {
return new URL('resources/post_name_on_load.html?name=' + name,
window.location).href;
}
function waitForMessage(message, handler) {
return withEventListener(window, 'message', e => (e.data === message) && handler(e));;
}
function withWindow(name) {
let win = window.open(makePostBackUrl(name))
return waitForMessage(name, _ => win);
}
function navigateWindow(win, name) {
win.location = makePostBackUrl(name);
return waitForMessage(name, _ => win);
}
function waitDuration(delay) {
return new Promise(resolve => {
setTimeout(resolve, delay);
})
}
function goBack(win) {
var p = withEventListener(win, 'pagehide');
win.history.back();
return p;
}
promise_test(t => {
let idleCalled = false;
let running = true;
return withWindow('foo')
.then(win => {
let callback = function(d) {
idleCalled = true;
if (running) {
win.requestIdleCallback(callback);
}
};
win.requestIdleCallback(callback);
return navigateWindow(win, 'bar')
.then(_ => idleCalled = false)
.then(_ => waitDuration(2000))
.then(_ => {
assert_false(idleCalled, "idle callback shouldn't have been called yet");
return goBack(win);
})
.then(_ => Promise.race([
// At this point it's a matter of having bfcache ...
waitDuration(2000)
.then(_ => {
assert_true(idleCalled, "idle callback should've been called by now");
running = false;
}),
// ... or not. If not, we expect a load event.
waitForMessage("foo")
]))
.then(_ => win.close())
.catch(e => {
win.close();
throw e;
})
});
});
</script>
|
