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
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Large preferences should not be set in the child process.
// Non-string preferences are not tested here, because their behavior
// should not be affected by this filtering.
var Ci = Components.interfaces;
var Cc = Components.classes;
function isParentProcess() {
let appInfo = Cc["@mozilla.org/xre/app-info;1"];
return (!appInfo || appInfo.getService(Ci.nsIXULRuntime).processType == Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT);
}
function makeBuffer(length) {
let string = "x";
while (string.length < length) {
string = string + string;
}
if (string.length > length) {
string = string.substring(length - string.length);
}
return string;
}
// from prefapi.h
const MAX_ADVISABLE_PREF_LENGTH = 4 * 1024;
const largeString = makeBuffer(MAX_ADVISABLE_PREF_LENGTH + 1);
const smallString = makeBuffer(4);
const testValues = [
{name: "None", value: undefined},
{name: "Small", value: smallString},
{name: "Large", value: largeString},
];
function prefName(def, user) {
return "Test.IPC.default" + def.name + "User" + user.name;
}
function expectedPrefValue(def, user) {
if (user.value) {
return user.value;
}
return def.value;
}
function run_test() {
let pb = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
let ps = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService);
let defaultBranch = ps.getDefaultBranch("");
let isParent = isParentProcess();
if (isParent) {
// Set all combinations of none, small and large, for default and user prefs.
for (let def of testValues) {
for (let user of testValues) {
let currPref = prefName(def, user);
if (def.value) {
defaultBranch.setCharPref(currPref, def.value);
}
if (user.value) {
pb.setCharPref(currPref, user.value);
}
}
}
run_test_in_child("test_large_pref.js");
}
// Check that each preference is set or not set, as appropriate.
for (let def of testValues) {
for (let user of testValues) {
if (!def.value && !user.value) {
continue;
}
let pref_name = prefName(def, user);
if (isParent || (def.name != "Large" && user.name != "Large")) {
do_check_eq(pb.getCharPref(pref_name), expectedPrefValue(def, user));
} else {
// This is the child, and either the default or user value is
// large, so the preference should not be set.
let prefExists;
try {
pb.getCharPref(pref_name);
prefExists = true;
} catch(e) {
prefExists = false;
}
ok(!prefExists,
"Pref " + pref_name + " should not be set in the child");
}
}
}
}
|
