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