gecko-dev/xpcom/tests/unit/test_streams.js

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is XPCOM Input/Output Stream tests.
 *
 * The Initial Developer of the Original Code is
 * Alexander J. Vincent.
 * Portions created by the Initial Developer are Copyright (C) 2007
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

const Ci = Components.interfaces;
const Cr = Components.results;
const CC = Components.Constructor;

var Pipe = CC("@mozilla.org/pipe;1",
              "nsIPipe",
              "init");
var BinaryOutput = CC("@mozilla.org/binaryoutputstream;1",
                      "nsIBinaryOutputStream",
                      "setOutputStream");
var BinaryInput = CC("@mozilla.org/binaryinputstream;1",
                     "nsIBinaryInputStream",
                     "setInputStream");

/**
 * Binary stream tests.
 */
function test_binary_streams() {
  var p, is, os;

  p = new Pipe(false, false, 1024, 1, null);
  is = new BinaryInput(p.inputStream);
  os = new BinaryOutput(p.outputStream);

  const LargeNum = Math.pow(2, 18) + Math.pow(2, 12) + 1;
  const HugeNum = Math.pow(2, 62);
  const HelloStr = "Hello World";
  const HelloArray = Array.map(HelloStr, function(c) {return c.charCodeAt(0)});
  var countObj = {};
  var msg = {};

  // Test reading immediately after writing.
  os.writeBoolean(true);
  do_check_eq(is.readBoolean(), true);
  os.write8(4);
  do_check_eq(is.read8(), 4);
  os.write16(4);
  do_check_eq(is.read16(), 4);
  os.write16(1024);
  do_check_eq(is.read16(), 1024);
  os.write32(7);
  do_check_eq(is.read32(), 7);
  os.write32(LargeNum);
  do_check_eq(is.read32(), LargeNum);
  os.write64(LargeNum);
  do_check_eq(is.read64(), LargeNum);
  os.write64(1024);
  do_check_eq(is.read64(), 1024);
  os.write64(HugeNum);
  do_check_eq(is.read64(), HugeNum);
  os.writeFloat(2.5);
  do_check_eq(is.readFloat(), 2.5);
//  os.writeDouble(Math.SQRT2);
//  do_check_eq(is.readDouble(), Math.SQRT2);
  os.writeStringZ("Mozilla");
  do_check_eq(is.readCString(), "Mozilla");
  os.writeWStringZ("Gecko");
  do_check_eq(is.readString(), "Gecko");
  os.writeBytes(HelloStr, HelloStr.length);
  do_check_eq(is.available(), HelloStr.length);
  msg = is.readBytes(HelloStr.length);
  do_check_eq(msg, HelloStr);
  msg = null;
  countObj.value = -1;
  os.writeByteArray(HelloArray, HelloArray.length);
  do_check_eq(is.available(), HelloStr.length);
  msg = is.readByteArray(HelloStr.length)
  do_check_eq(typeof msg, typeof HelloArray);
  do_check_eq(msg.toSource(), HelloArray.toSource());
  do_check_eq(is.available(), 0);

  // Test writing in one big chunk.
  os.writeBoolean(true);
  os.write8(4);
  os.write16(4);
  os.write16(1024);
  os.write32(7);
  os.write32(LargeNum);
  os.write64(LargeNum);
  os.write64(1024);
  os.write64(HugeNum);
  os.writeFloat(2.5);
//  os.writeDouble(Math.SQRT2);
  os.writeStringZ("Mozilla");
  os.writeWStringZ("Gecko");
  os.writeBytes(HelloStr, HelloStr.length);
  os.writeByteArray(HelloArray, HelloArray.length);
  // Available should not be zero after a long write like this.
  do_check_neq(is.available(), 0);

  // Test reading in one big chunk.
  do_check_eq(is.readBoolean(), true);
  do_check_eq(is.read8(), 4);
  do_check_eq(is.read16(), 4);
  do_check_eq(is.read16(), 1024);
  do_check_eq(is.read32(), 7);
  do_check_eq(is.read32(), LargeNum);
  do_check_eq(is.read64(), LargeNum);
  do_check_eq(is.read64(), 1024);
  do_check_eq(is.read64(), HugeNum);
  do_check_eq(is.readFloat(), 2.5);
//  do_check_eq(is.readDouble(), Math.SQRT2);
  do_check_eq(is.readCString(), "Mozilla");
  do_check_eq(is.readString(), "Gecko");
  // Remember, we wrote HelloStr twice - once as a string, and then as an array.
  do_check_eq(is.available(), HelloStr.length * 2);
  msg = is.readBytes(HelloStr.length);
  do_check_eq(msg, HelloStr);
  msg = null;
  countObj.value = -1;
  do_check_eq(is.available(), HelloStr.length);
  msg = is.readByteArray(HelloStr.length)
  do_check_eq(typeof msg, typeof HelloArray);
  do_check_eq(msg.toSource(), HelloArray.toSource());
  do_check_eq(is.available(), 0);
  
  // Test for invalid actions.
  os.close();
  is.close();

  try {
    os.writeBoolean(false);
    do_throw("Not reached!");
  } catch (e if (e instanceof Ci.nsIException &&
                 e.result == Cr.NS_BASE_STREAM_CLOSED)) {
    // do nothing
  }

  try {
    is.available();
    do_throw("Not reached!");
  } catch (e if (e instanceof Ci.nsIException &&
                 e.result == Cr.NS_BASE_STREAM_CLOSED)) {
    // do nothing
  }

  try {
    is.readBoolean();
    do_throw("Not reached!");
  } catch (e if (e instanceof Ci.nsIException &&
                 e.result == Cr.NS_ERROR_FAILURE)) {
    // do nothing
  }
}

function run_test() {
  test_binary_streams();
}