gecko/xpcom/tests/unit/test_hidden_files.js

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const Ci = Components.interfaces;
const Cc = Components.classes;
const NS_OS_TEMP_DIR = "TmpD";
const CWD = do_get_cwd();
function checkOS(os) {
const nsILocalFile_ = "nsILocalFile" + os;
return nsILocalFile_ in Components.interfaces &&
CWD instanceof Components.interfaces[nsILocalFile_];
}
const isWin = checkOS("Win");
const isOS2 = checkOS("OS2");
const isMac = checkOS("Mac");
const isUnix = !(isWin || isOS2 || isMac);
var hiddenUnixFile;
function createUNIXHiddenFile() {
var dirSvc = Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties);
var tmpDir = dirSvc.get(NS_OS_TEMP_DIR, Ci.nsIFile);
hiddenUnixFile = tmpDir.clone();
hiddenUnixFile.append(".foo");
// we don't care if this already exists because we don't care
// about the file's contents (just the name)
if (!hiddenUnixFile.exists())
hiddenUnixFile.create(Ci.nsIFile.NORMAL_FILE_TYPE, 0666);
return hiddenUnixFile.exists();
}
function run_test() {
// Skip this test on Windows
if (isWin || isOS2)
return;
do_check_true(createUNIXHiddenFile());
do_check_true(hiddenUnixFile.isHidden());
}