netwerk/test/unit/test_safeoutputstream_append.js

   1 /* atomic-file-output-stream and safe-file-output-stream should throw and
   2  * exception if PR_APPEND is explicity specified without PR_TRUNCATE. */
   3 "use strict";
   4
   5 const PR_WRONLY = 0x02;
   6 const PR_CREATE_FILE = 0x08;
   7 const PR_APPEND = 0x10;
   8 const PR_TRUNCATE = 0x20;
   9
  10 function check_flag(file, contractID, flags, throws) {
  11   let stream = Cc[contractID].createInstance(Ci.nsIFileOutputStream);
  12
  13   if (throws) {
  14     /* NS_ERROR_INVALID_ARG is reported as NS_ERROR_ILLEGAL_VALUE, since they
  15      * are same value. */
  16     Assert.throws(
  17       () => stream.init(file, flags, 0o644, 0),
  18       /NS_ERROR_ILLEGAL_VALUE/
  19     );
  20   } else {
  21     stream.init(file, flags, 0o644, 0);
  22     stream.close();
  23   }
  24 }
  25
  26 function run_test() {
  27   let filename = "test.txt";
  28   let file = Services.dirsvc.get("TmpD", Ci.nsIFile);
  29   file.append(filename);
  30
  31   let tests = [
  32     [PR_WRONLY | PR_CREATE_FILE | PR_APPEND | PR_TRUNCATE, false],
  33     [PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE, false],
  34     [PR_WRONLY | PR_CREATE_FILE | PR_APPEND, true],
  35     [-1, false],
  36   ];
  37   for (let contractID of [
  38     "@mozilla.org/network/atomic-file-output-stream;1",
  39     "@mozilla.org/network/safe-file-output-stream;1",
  40   ]) {
  41     for (let [flags, throws] of tests) {
  42       check_flag(file, contractID, flags, throws);
  43     }
  44   }
  45 }