netwerk/test/unit/test_cache2-25-chunk-memory-limit.js

   1 "use strict";
   2
   3 function gen_200k() {
   4   var i;
   5   var data = "0123456789ABCDEFGHIJLKMNO";
   6   for (i = 0; i < 13; i++) {
   7     data += data;
   8   }
   9   return data;
  10 }
  11
  12 // Keep the output stream of the first entry in a global variable, so the
  13 // CacheFile and its buffer isn't released before we write the data to the
  14 // second entry.
  15 var oStr;
  16
  17 function run_test() {
  18   do_get_profile();
  19
  20   // set max chunks memory so that only one full chunk fits within the limit
  21   Services.prefs.setIntPref("browser.cache.disk.max_chunks_memory_usage", 300);
  22
  23   asyncOpenCacheEntry(
  24     "http://a/",
  25     "disk",
  26     Ci.nsICacheStorage.OPEN_NORMALLY,
  27     null,
  28     function (status, entry) {
  29       Assert.equal(status, Cr.NS_OK);
  30       var data = gen_200k();
  31       oStr = entry.openOutputStream(0, data.length);
  32       Assert.equal(data.length, oStr.write(data, data.length));
  33
  34       asyncOpenCacheEntry(
  35         "http://b/",
  36         "disk",
  37         Ci.nsICacheStorage.OPEN_NORMALLY,
  38         null,
  39         function (status1, entry1) {
  40           Assert.equal(status1, Cr.NS_OK);
  41           var oStr2 = entry1.openOutputStream(0, data.length);
  42           do_check_throws_nsIException(
  43             () => oStr2.write(data, data.length),
  44             "NS_ERROR_OUT_OF_MEMORY"
  45           );
  46           finish_cache2_test();
  47         }
  48       );
  49     }
  50   );
  51
  52   do_test_pending();
  53 }