The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/toolkit/components/osfile/tests/xpcshell/test_osfile_async_bytes.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,44 @@
     1.4 +"use strict";
     1.5 +
     1.6 +Components.utils.import("resource://gre/modules/osfile.jsm");
     1.7 +Components.utils.import("resource://gre/modules/Task.jsm");
     1.8 +
     1.9 +function run_test() {
    1.10 +  do_test_pending();
    1.11 +  run_next_test();
    1.12 +}
    1.13 +
    1.14 +/**
    1.15 + * Test to ensure that {bytes:} in options to |readTo| and |write| are correctly
    1.16 + * preserved.
    1.17 + */
    1.18 +add_task(function* test_bytes() {
    1.19 +  let path = OS.Path.join(OS.Constants.Path.tmpDir,
    1.20 +                          "test_osfile_async_bytes.tmp");
    1.21 +  let file = yield OS.File.open(path, {trunc: true, read: true, write: true});
    1.22 +  try {
    1.23 +    try {
    1.24 +      // 1. Test write, by supplying {bytes:} options smaller than the actual
    1.25 +      // buffer.
    1.26 +      yield file.write(new Uint8Array(2048), {bytes: 1024});
    1.27 +      do_check_eq((yield file.stat()).size, 1024);
    1.28 +
    1.29 +      // 2. Test same for |readTo|.
    1.30 +      yield file.setPosition(0, OS.File.POS_START);
    1.31 +      let read = yield file.readTo(new Uint8Array(1024), {bytes: 512});
    1.32 +      do_check_eq(read, 512);
    1.33 +
    1.34 +      // 3. Test that passing nullish values for |options| still works.
    1.35 +      yield file.setPosition(0, OS.File.POS_END);
    1.36 +      yield file.write(new Uint8Array(1024), null);
    1.37 +      yield file.write(new Uint8Array(1024), undefined);
    1.38 +      do_check_eq((yield file.stat()).size, 3072);
    1.39 +    } finally {
    1.40 +      yield file.close();
    1.41 +    }
    1.42 +  } finally {
    1.43 +    yield OS.File.remove(path);
    1.44 +  }
    1.45 +});
    1.46 +
    1.47 +add_task(do_test_finished);