The Tor Browser: addon-sdk/source/test/test-text-streams.js@129ffea94266 (annotated)

addon-sdk/source/test/test-text-streams.js@129ffea94266 (annotated)

addon-sdk/source/test/test-text-streams.js

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 const file = require("sdk/io/file");
 const { pathFor } = require("sdk/system");
 const { Loader } = require("sdk/test/loader");
 const STREAM_CLOSED_ERROR = new RegExp("The stream is closed and cannot be used.");
 // This should match the constant of the same name in text-streams.js.
 const BUFFER_BYTE_LEN = 0x8000;
 exports.testWriteRead = function (assert) {
   let fname = dataFileFilename();
   // Write a small string less than the stream's buffer size...
   let str = "exports.testWriteRead data!";
   let stream = file.open(fname, "w");
   assert.ok(!stream.closed, "stream.closed after open should be false");
   stream.write(str);
   stream.close();
   assert.ok(stream.closed, "stream.closed after close should be true");
   assert.throws(function () stream.close(),
                     STREAM_CLOSED_ERROR,
                     "stream.close after already closed should raise error");
   assert.throws(function () stream.write("This shouldn't be written!"),
                     STREAM_CLOSED_ERROR,
                     "stream.write after close should raise error");
   // ... and read it.
   stream = file.open(fname);
   assert.ok(!stream.closed, "stream.closed after open should be false");
   assert.equal(stream.read(), str,
                    "stream.read should return string written");
   assert.equal(stream.read(), "",
                    "stream.read at EOS should return empty string");
   stream.close();
   assert.ok(stream.closed, "stream.closed after close should be true");
   assert.throws(function () stream.close(),
                     STREAM_CLOSED_ERROR,
                     "stream.close after already closed should raise error");
   assert.throws(function () stream.read(),
                     STREAM_CLOSED_ERROR,
                     "stream.read after close should raise error");
   // Write a big string many times the size of the stream's buffer and read it.
   // Since it comes after the previous test, this also ensures that the file is
   // truncated when it's opened for writing.
   str = "";
   let bufLen = BUFFER_BYTE_LEN;
   let fileSize = bufLen * 10;
   for (let i = 0; i < fileSize; i++)
     str += i % 10;
   stream = file.open(fname, "w");
   stream.write(str);
   stream.close();
   stream = file.open(fname);
   assert.equal(stream.read(), str,
                    "stream.read should return string written");
   stream.close();
   // The same, but write and read in chunks.
   stream = file.open(fname, "w");
   let i = 0;
   while (i < str.length) {
     // Use a chunk length that spans buffers.
     let chunk = str.substr(i, bufLen + 1);
     stream.write(chunk);
     i += bufLen + 1;
   }
   stream.close();
   stream = file.open(fname);
   let readStr = "";
   bufLen = BUFFER_BYTE_LEN;
   let readLen = bufLen + 1;
   do {
     var frag = stream.read(readLen);
     readStr += frag;
   } while (frag);
   stream.close();
   assert.equal(readStr, str,
                    "stream.write and read in chunks should work as expected");
   // Read the same file, passing in strange numbers of bytes to read.
   stream = file.open(fname);
   assert.equal(stream.read(fileSize * 100), str,
                    "stream.read with big byte length should return string " +
                    "written");
   stream.close();
   stream = file.open(fname);
   assert.equal(stream.read(0), "",
                    "string.read with zero byte length should return empty " +
                    "string");
   stream.close();
   stream = file.open(fname);
   assert.equal(stream.read(-1), "",
                    "string.read with negative byte length should return " +
                    "empty string");
   stream.close();
   file.remove(fname);
 };
 exports.testWriteAsync = function (assert, done) {
   let fname = dataFileFilename();
   let str = "exports.testWriteAsync data!";
   let stream = file.open(fname, "w");
   assert.ok(!stream.closed, "stream.closed after open should be false");
   // Write.
   stream.writeAsync(str, function (err) {
     assert.equal(this, stream, "|this| should be the stream object");
     assert.equal(err, undefined,
                      "stream.writeAsync should not cause error");
     assert.ok(stream.closed, "stream.closed after write should be true");
     assert.throws(function () stream.close(),
                       STREAM_CLOSED_ERROR,
                       "stream.close after already closed should raise error");
     assert.throws(function () stream.writeAsync("This shouldn't work!"),
                       STREAM_CLOSED_ERROR,
                       "stream.writeAsync after close should raise error");
     // Read.
     stream = file.open(fname, "r");
     assert.ok(!stream.closed, "stream.closed after open should be false");
     let readStr = stream.read();
     assert.equal(readStr, str,
                      "string.read should yield string written");
     stream.close();
     file.remove(fname);
     done();
   });
 };
 exports.testUnload = function (assert) {
   let loader = Loader(module);
   let file = loader.require("sdk/io/file");
   let filename = dataFileFilename("temp");
   let stream = file.open(filename, "w");
   loader.unload();
   assert.ok(stream.closed, "stream should be closed after module unload");
 };
 // Returns the name of a file that should be used to test writing and reading.
 function dataFileFilename() {
   return file.join(pathFor("ProfD"), "test-text-streams-data");
 }
 require('sdk/test').run(exports);