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_append.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,122 @@
     1.4 +"use strict";
     1.5 +
     1.6 +do_print("starting tests");
     1.7 +
     1.8 +Components.utils.import("resource://gre/modules/osfile.jsm");
     1.9 +Components.utils.import("resource://gre/modules/Task.jsm");
    1.10 +
    1.11 +/**
    1.12 + * A test to check that the |append| mode flag is correctly implemented.
    1.13 + * (see bug 925865)
    1.14 + */
    1.15 +
    1.16 +function setup_mode(mode) {
    1.17 +  // Complete mode.
    1.18 +  let realMode = {
    1.19 +    read: true,
    1.20 +    write: true
    1.21 +  };
    1.22 +  for (let k in mode) {
    1.23 +    realMode[k] = mode[k];
    1.24 +  }
    1.25 +  return realMode;
    1.26 +}
    1.27 +
    1.28 +// Test append mode.
    1.29 +function test_append(mode) {
    1.30 +  let path = OS.Path.join(OS.Constants.Path.tmpDir,
    1.31 +                          "test_osfile_async_append.tmp");
    1.32 +
    1.33 +  // Clear any left-over files from previous runs.
    1.34 +  try {
    1.35 +    yield OS.File.remove(path);
    1.36 +  } catch (ex if ex.becauseNoSuchFile) {
    1.37 +    // ignore
    1.38 +  }
    1.39 +
    1.40 +  try {
    1.41 +    mode = setup_mode(mode);
    1.42 +    mode.append = true;
    1.43 +    if (mode.trunc) {
    1.44 +      // Pre-fill file with some data to see if |trunc| actually works.
    1.45 +      yield OS.File.writeAtomic(path, new Uint8Array(500));
    1.46 +    }
    1.47 +    let file = yield OS.File.open(path, mode);
    1.48 +    try {
    1.49 +      yield file.write(new Uint8Array(1000));
    1.50 +      yield file.setPosition(0, OS.File.POS_START);
    1.51 +      yield file.read(100);
    1.52 +      // Should be at offset 100, length 1000 now.
    1.53 +      yield file.write(new Uint8Array(100));
    1.54 +      // Should be at offset 1100, length 1100 now.
    1.55 +      let stat = yield file.stat();
    1.56 +      do_check_eq(1100, stat.size);
    1.57 +    } finally {
    1.58 +      yield file.close();
    1.59 +    }
    1.60 +  } catch(ex) {
    1.61 +    try {
    1.62 +      yield OS.File.remove(path);
    1.63 +    } catch (ex if ex.becauseNoSuchFile) {
    1.64 +      // ignore.
    1.65 +    }
    1.66 +  }
    1.67 +}
    1.68 +
    1.69 +// Test no-append mode.
    1.70 +function test_no_append(mode) {
    1.71 +  let path = OS.Path.join(OS.Constants.Path.tmpDir,
    1.72 +                          "test_osfile_async_noappend.tmp");
    1.73 +
    1.74 +  // Clear any left-over files from previous runs.
    1.75 +  try {
    1.76 +    yield OS.File.remove(path);
    1.77 +  } catch (ex if ex.becauseNoSuchFile) {
    1.78 +    // ignore
    1.79 +  }
    1.80 +
    1.81 +  try {
    1.82 +    mode = setup_mode(mode);
    1.83 +    mode.append = false;
    1.84 +    if (mode.trunc) {
    1.85 +      // Pre-fill file with some data to see if |trunc| actually works.
    1.86 +      yield OS.File.writeAtomic(path, new Uint8Array(500));
    1.87 +    }
    1.88 +    let file = yield OS.File.open(path, mode);
    1.89 +    try {
    1.90 +      yield file.write(new Uint8Array(1000));
    1.91 +      yield file.setPosition(0, OS.File.POS_START);
    1.92 +      yield file.read(100);
    1.93 +      // Should be at offset 100, length 1000 now.
    1.94 +      yield file.write(new Uint8Array(100));
    1.95 +      // Should be at offset 200, length 1000 now.
    1.96 +      let stat = yield file.stat();
    1.97 +      do_check_eq(1000, stat.size);
    1.98 +    } finally {
    1.99 +      yield file.close();
   1.100 +    }
   1.101 +  } finally {
   1.102 +    try {
   1.103 +      yield OS.File.remove(path);
   1.104 +    } catch (ex if ex.becauseNoSuchFile) {
   1.105 +      // ignore.
   1.106 +    }
   1.107 +  }
   1.108 +}
   1.109 +
   1.110 +let test_flags = [
   1.111 +  {},
   1.112 +  {create:true},
   1.113 +  {trunc:true}
   1.114 +];
   1.115 +function run_test() {
   1.116 +  do_test_pending();
   1.117 +
   1.118 +  for (let t of test_flags) {
   1.119 +    add_task(test_append.bind(null, t));
   1.120 +    add_task(test_no_append.bind(null, t));
   1.121 +  }
   1.122 +  add_task(do_test_finished);
   1.123 +
   1.124 +  run_next_test();
   1.125 +}