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Test Info:
- Manifest: modules/libpref/test/unit/xpcshell.toml
/* Any copyright is dedicated to the Public Domain.
function run_test() {
const PREF_NAME = "testPref";
var prefs = Services.prefs.getDefaultBranch(null);
var userprefs = Services.prefs.getBranch(null);
/* First, test to make sure we can parse a float from a string properly. */
prefs.setCharPref(PREF_NAME, "9.674");
prefs.lockPref(PREF_NAME);
var myFloat = 9.674;
var fudge = 0.001;
var floatPref = userprefs.getFloatPref(PREF_NAME);
Assert.ok(myFloat + fudge >= floatPref);
Assert.ok(myFloat - fudge <= floatPref);
/* Now test some failure conditions. */
prefs.unlockPref(PREF_NAME);
prefs.setCharPref(PREF_NAME, "");
prefs.lockPref(PREF_NAME);
do_check_throws(function () {
userprefs.getFloatPref(PREF_NAME);
}, Cr.NS_ERROR_ILLEGAL_VALUE);
prefs.unlockPref(PREF_NAME);
prefs.setCharPref(PREF_NAME, "18.0a1");
prefs.lockPref(PREF_NAME);
do_check_throws(function () {
userprefs.getFloatPref(PREF_NAME);
}, Cr.NS_ERROR_ILLEGAL_VALUE);
prefs.unlockPref(PREF_NAME);
prefs.setCharPref(PREF_NAME, "09.25.2012");
prefs.lockPref(PREF_NAME);
do_check_throws(function () {
userprefs.getFloatPref(PREF_NAME);
}, Cr.NS_ERROR_ILLEGAL_VALUE);
prefs.unlockPref(PREF_NAME);
prefs.setCharPref(PREF_NAME, "aString");
prefs.lockPref(PREF_NAME);
do_check_throws(function () {
userprefs.getFloatPref(PREF_NAME);
}, Cr.NS_ERROR_ILLEGAL_VALUE);
}