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
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/**
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/
*/
/**
* This test is mainly to verify that the storage pressure event is fired when
* the eviction process is not able to free some space when a quota client
* attempts to write over the global limit or when the global limit is reduced
* below the global usage.
*/
loadScript("dom/quota/test/common/file.js");
function awaitStoragePressure() {
let promise_resolve;
let promise = new Promise(function (resolve) {
promise_resolve = resolve;
});
function observer(subject, topic) {
ok(true, "Got the storage pressure event");
Services.obs.removeObserver(observer, topic);
let usage = subject.QueryInterface(Ci.nsISupportsPRUint64).data;
promise_resolve(usage);
}
Services.obs.addObserver(observer, "QuotaManager::StoragePressure");
return promise;
}
async function testSteps() {
const globalLimitKB = 2;
const principal = getPrincipal("https://example.com");
info("Setting limits");
setGlobalLimit(globalLimitKB);
info("Initializing");
let request = init();
await requestFinished(request);
info("Initializing temporary storage");
request = initTemporaryStorage();
await requestFinished(request);
info("Persisting and filling an origin");
// We need to persist the origin first to omit the group limit checks.
// Otherwise, we would have to fill five separate origins.
request = persist(principal);
await requestFinished(request);
let database = getSimpleDatabase(principal);
request = database.open("data");
await requestFinished(request);
try {
request = database.write(getBuffer(globalLimitKB * 1024));
await requestFinished(request);
ok(true, "Should not have thrown");
} catch (ex) {
ok(false, "Should not have thrown");
}
info("Testing storage pressure by writing over the global limit");
info("Storing one more byte to get the storage pressure event while writing");
let promiseStoragePressure = awaitStoragePressure();
try {
request = database.write(getBuffer(1));
await requestFinished(request);
ok(false, "Should have thrown");
} catch (e) {
ok(true, "Should have thrown");
ok(
e.resultCode === NS_ERROR_FILE_NO_DEVICE_SPACE,
"Threw right result code"
);
}
info("Checking the storage pressure event");
let usage = await promiseStoragePressure;
ok(usage == globalLimitKB * 1024, "Got correct usage");
info("Testing storage pressure by reducing the global limit");
info(
"Reducing the global limit to get the storage pressuse event while the" +
" temporary storage is being initialized"
);
setGlobalLimit(globalLimitKB - 1);
request = reset();
await requestFinished(request);
info("Initializing");
request = init();
await requestFinished(request);
promiseStoragePressure = awaitStoragePressure();
info("Initializing temporary storage");
request = initTemporaryStorage();
await requestFinished(request);
info("Checking the storage pressure event");
usage = await promiseStoragePressure;
ok(usage == globalLimitKB * 1024, "Got correct usage");
info("Resetting limits");
resetGlobalLimit();
request = reset();
await requestFinished(request);
}
|
