The Tor Browser: netwerk/test/unit/test_file_partial_inputstream.js@6474c204b198 (annotated)

netwerk/test/unit/test_file_partial_inputstream.js@6474c204b198 (annotated)

netwerk/test/unit/test_file_partial_inputstream.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* 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/. */
 // Test nsIPartialFileInputStream
 // NOTE! These tests often use do_check_true(a == b) rather than
 //       do_check_eq(a, b) to avoid outputting characters which confuse
 //       the console
 const CC = Components.Constructor;
 const BinaryInputStream = CC("@mozilla.org/binaryinputstream;1",
                              "nsIBinaryInputStream",
                              "setInputStream");
 const PR_RDONLY = 0x1;  // see prio.h
 // We need the profile directory so the test harness will clean up our test
 // files.
 do_get_profile();
 var binary_test_file_name = "data/image.png";
 var text_test_file_name = "test_file_partial_inputstream.js";
 // This is a global variable since if it's passed as an argument stack traces
 // become unreadable.
 var test_file_data;
 function run_test()
 {
   // Binary tests
   let binaryFile = do_get_file(binary_test_file_name);
   let size = binaryFile.fileSize;
   // Want to make sure we're working with a large enough file
   dump("**** binary file size is: " + size + " ****\n");
   do_check_true(size > 65536);
   let binaryStream = new BinaryInputStream(new_file_input_stream(binaryFile));
   test_file_data = "";
   while ((avail = binaryStream.available()) > 0) {
     test_file_data += binaryStream.readBytes(avail);
   }
   do_check_eq(test_file_data.length, size);
   binaryStream.close();
   test_binary_portion(0, 10);
   test_binary_portion(0, 20000);
   test_binary_portion(0, size);
   test_binary_portion(20000, 10);
   test_binary_portion(20000, 20000);
   test_binary_portion(20000, size-20000);
   test_binary_portion(size-10, 10);
   test_binary_portion(size-20000, 20000);
   test_binary_portion(0, 0);
   test_binary_portion(20000, 0);
   test_binary_portion(size-1, 1);
   // Text-file tests
   let textFile = do_get_file(binary_test_file_name);
   size = textFile.fileSize;
   // Want to make sure we're working with a large enough file
   dump("**** text file size is: " + size + " ****\n");
   do_check_true(size > 7000);
   let textStream = new BinaryInputStream(new_file_input_stream(textFile));
   test_file_data = "";
   while ((avail = textStream.available()) > 0)
     test_file_data += textStream.readBytes(avail);
   do_check_eq(test_file_data.length, size);
   textStream.close();
   test_text_portion(0, 100);
   test_text_portion(0, size);
   test_text_portion(5000, 1000);
   test_text_portion(size-10, 10);
   test_text_portion(size-5000, 5000);
   test_text_portion(10, 0);
   test_text_portion(size-1, 1);
   // Test auto-closing files
   // Test behavior when *not* autoclosing
   let tempFile = create_temp_file("01234567890123456789");
   let tempInputStream = new_partial_file_input_stream(tempFile, 5, 10);
   tempInputStream.QueryInterface(Ci.nsILineInputStream);
   do_check_eq(read_line_stream(tempInputStream)[1], "5678901234");
   try {
     // This fails on some platforms
     tempFile.remove(false);
   }
   catch (ex) {
   }
   tempInputStream.QueryInterface(Ci.nsISeekableStream);
   tempInputStream.seek(SET, 1);
   do_check_eq(read_line_stream(tempInputStream)[1], "678901234");
   // Test removing the file when autoclosing
   tempFile = create_temp_file("01234567890123456789");
   tempInputStream = new_partial_file_input_stream(tempFile, 5, 10,
                                                   Ci.nsIFileInputStream.CLOSE_ON_EOF |
                                                   Ci.nsIFileInputStream.REOPEN_ON_REWIND);
   tempInputStream.QueryInterface(Ci.nsILineInputStream);
   do_check_eq(read_line_stream(tempInputStream)[1], "5678901234");
   tempFile.remove(false);
   tempInputStream.QueryInterface(Ci.nsISeekableStream);
   try {
     // The seek should reopen the file, which should fail.
     tempInputStream.seek(SET, 1);
     do_check_true(false);
   }
   catch (ex) {
   }
   // Test editing the file when autoclosing
   tempFile = create_temp_file("01234567890123456789");
   tempInputStream = new_partial_file_input_stream(tempFile, 5, 10,
                                                   Ci.nsIFileInputStream.CLOSE_ON_EOF |
                                                   Ci.nsIFileInputStream.REOPEN_ON_REWIND);
   tempInputStream.QueryInterface(Ci.nsILineInputStream);
   do_check_eq(read_line_stream(tempInputStream)[1], "5678901234");
   let ostream = Cc["@mozilla.org/network/file-output-stream;1"].
                 createInstance(Ci.nsIFileOutputStream);
   ostream.init(tempFile, 0x02 | 0x08 | 0x20, // write, create, truncate
 , 0);
   let newData = "abcdefghijklmnopqrstuvwxyz";
   ostream.write(newData, newData.length);
   ostream.close();
   tempInputStream.QueryInterface(Ci.nsISeekableStream);
   tempInputStream.seek(SET, 1);
   do_check_eq(read_line_stream(tempInputStream)[1], newData.substr(6,9));
   // Test auto-delete and auto-close together
   tempFile = create_temp_file("01234567890123456789");
   tempInputStream = new_partial_file_input_stream(tempFile, 5, 10,
                                                   Ci.nsIFileInputStream.CLOSE_ON_EOF |
                                                   Ci.nsIFileInputStream.DELETE_ON_CLOSE);
   tempInputStream.QueryInterface(Ci.nsILineInputStream);
   do_check_eq(read_line_stream(tempInputStream)[1], "5678901234");
   do_check_false(tempFile.exists());
 }
 function test_binary_portion(start, length) {
   let subFile = create_temp_file(test_file_data.substr(start, length));
   let streamTests = [
     test_4k_read,
     test_max_read,
     test_seek,
     test_seek_then_read,
   ];
   for each(test in streamTests) {
     let fileStream = new_file_input_stream(subFile);
     let partialStream = new_partial_file_input_stream(do_get_file(binary_test_file_name),
                                                       start, length);
     test(fileStream, partialStream, length);
     fileStream.close();
     partialStream.close();
   }
 }
 function test_4k_read(fileStreamA, fileStreamB) {
   fileStreamA.QueryInterface(Ci.nsISeekableStream);
   fileStreamB.QueryInterface(Ci.nsISeekableStream);
   let streamA = new BinaryInputStream(fileStreamA);
   let streamB = new BinaryInputStream(fileStreamB);
   while(1) {
     do_check_eq(fileStreamA.tell(), fileStreamB.tell());
     let availA = streamA.available();
     let availB = streamB.available();
     do_check_eq(availA, availB);
     if (availA == 0)
       return;
     let readSize = availA > 4096 ? 4096 : availA;
     do_check_true(streamA.readBytes(readSize) ==
                   streamB.readBytes(readSize));
   }
 }
 function test_max_read(fileStreamA, fileStreamB) {
   fileStreamA.QueryInterface(Ci.nsISeekableStream);
   fileStreamB.QueryInterface(Ci.nsISeekableStream);
   let streamA = new BinaryInputStream(fileStreamA);
   let streamB = new BinaryInputStream(fileStreamB);
   while(1) {
     do_check_eq(fileStreamA.tell(), fileStreamB.tell());
     let availA = streamA.available();
     let availB = streamB.available();
     do_check_eq(availA, availB);
     if (availA == 0)
       return;
     do_check_true(streamA.readBytes(availA) ==
                   streamB.readBytes(availB));
   }
 }
 const SET = Ci.nsISeekableStream.NS_SEEK_SET;
 const CUR = Ci.nsISeekableStream.NS_SEEK_CUR;
 const END = Ci.nsISeekableStream.NS_SEEK_END;
 function test_seek(dummy, partialFileStream, size) {
   // We can't test the "real" filestream here as our existing file streams
   // are very broken and allows searching past the end of the file.
   partialFileStream.QueryInterface(Ci.nsISeekableStream);
   tests = [
     [SET, 0],
     [SET, 5],
     [SET, 1000],
     [SET, size-10],
     [SET, size-5],
     [SET, size-1],
     [SET, size],
     [SET, size+10],
     [SET, 0],
     [CUR, 5],
     [CUR, -5],
     [SET, 5000],
     [CUR, -100],
     [CUR, 200],
     [CUR, -5000],
     [CUR, 5000],
     [CUR, size * 2],
     [SET, 1],
     [CUR, -1],
     [CUR, -1],
     [CUR, -1],
     [CUR, -1],
     [CUR, -1],
     [SET, size-1],
     [CUR, 1],
     [CUR, 1],
     [CUR, 1],
     [CUR, 1],
     [CUR, 1],
     [END, 0],
     [END, -1],
     [END, -5],
     [END, -1000],
     [END, -size+10],
     [END, -size+5],
     [END, -size+1],
     [END, -size],
     [END, -size-10],
     [END, 10],
     [CUR, 10],
     [CUR, 10],
     [CUR, 100],
     [CUR, 1000],
     [END, -1000],
     [CUR, 100],
     [CUR, 900],
     [CUR, 100],
     [CUR, 100],
   ];
   let pos = 0;
   for each(test in tests) {
     let didThrow = false;
     try {
       partialFileStream.seek(test[0], test[1]);
     }
     catch (ex) {
       didThrow = true;
     }
     let newPos = test[0] == SET ? test[1] :
                  test[0] == CUR ? pos + test[1] :
                  size + test[1];
     if (newPos > size || newPos < 0) {
       do_check_true(didThrow);
     }
     else {
       do_check_false(didThrow);
       pos = newPos;
     }
     do_check_eq(partialFileStream.tell(), pos);
     do_check_eq(partialFileStream.available(), size - pos);
   }
 }
 function test_seek_then_read(fileStreamA, fileStreamB, size) {
   // For now we only test seeking inside the file since our existing file
   // streams behave very strange when seeking to past the end of the file.
   if (size < 20000) {
     return;
   }
   fileStreamA.QueryInterface(Ci.nsISeekableStream);
   fileStreamB.QueryInterface(Ci.nsISeekableStream);
   let streamA = new BinaryInputStream(fileStreamA);
   let streamB = new BinaryInputStream(fileStreamB);
   let read = {};
   tests = [
     [SET, 0],
     [read, 1000],
     [read, 1000],
     [SET, 5],
     [read, 1000],
     [read, 5000],
     [CUR, 100],
     [read, 1000],
     [read, 5000],
     [CUR, -100],
     [read, 1000],
     [CUR, -100],
     [read, 5000],
     [END, -10],
     [read, 10],
     [END, -100],
     [read, 101],
     [CUR, -100],
     [read, 10],
     [SET, 0],
     [read, 20000],
     [read, 1],
     [read, 100],
   ];
   for each(test in tests) {
     if (test[0] === read) {
       let didThrowA = false;
       let didThrowB = false;
       let bytesA, bytesB;
       try {
         bytesA = streamA.readBytes(test[1]);
       }
       catch (ex) {
         didThrowA = true;
       }
       try {
         bytesB = streamB.readBytes(test[1]);
       }
       catch (ex) {
         didThrowB = true;
       }
       do_check_eq(didThrowA, didThrowB);
       do_check_true(bytesA == bytesB);
     }
     else {
       fileStreamA.seek(test[0], test[1]);
       fileStreamB.seek(test[0], test[1]);
     }
     do_check_eq(fileStreamA.tell(), fileStreamB.tell());
     do_check_eq(fileStreamA.available(), fileStreamB.available());
   }
 }
 function test_text_portion(start, length) {
   let subFile = create_temp_file(test_file_data.substr(start, length));
   let streamTests = [
     test_readline,
     test_seek_then_readline,
   ];
   for each(test in streamTests) {
     let fileStream = new_file_input_stream(subFile)
                      .QueryInterface(Ci.nsILineInputStream);
     let partialStream = new_partial_file_input_stream(do_get_file(binary_test_file_name),
                                                       start, length)
                         .QueryInterface(Ci.nsILineInputStream);
     test(fileStream, partialStream, length);
     fileStream.close();
     partialStream.close();
   }
 }
 function test_readline(fileStreamA, fileStreamB)
 {
   let moreA = true, moreB;
   while(moreA) {
     let lineA, lineB;
     [moreA, lineA] = read_line_stream(fileStreamA);
     [moreB, lineB] = read_line_stream(fileStreamB);
     do_check_eq(moreA, moreB);
     do_check_true(lineA.value == lineB.value);
   }
 }
 function test_seek_then_readline(fileStreamA, fileStreamB, size) {
   // For now we only test seeking inside the file since our existing file
   // streams behave very strange when seeking to past the end of the file.
   if (size < 100) {
     return;
   }
   fileStreamA.QueryInterface(Ci.nsISeekableStream);
   fileStreamB.QueryInterface(Ci.nsISeekableStream);
   let read = {};
   tests = [
     [SET, 0],
     [read, 5],
     [read, 5],
     [SET, 5],
     [read, 5],
     [read, 15],
     [CUR, 100],
     [read, 5],
     [read, 15],
     [CUR, -100],
     [read, 5],
     [CUR, -100],
     [read, 25],
     [END, -10],
     [read, 1],
     [END, -50],
     [read, 30],
     [read, 1],
     [read, 1],
     [CUR, -100],
     [read, 1],
     [SET, 0],
     [read, 10000],
     [read, 1],
     [read, 1],
     [SET, 0],
     [read, 1],
   ];
   for each(test in tests) {
     if (test[0] === read) {
       for (let i = 0; i < test[1]; ++i) {
         let didThrowA = false;
         let didThrowB = false;
         let lineA, lineB, moreA, moreB;
         try {
           [moreA, lineA] = read_line_stream(fileStreamA);
         }
         catch (ex) {
           didThrowA = true;
         }
         try {
           [moreB, lineB] = read_line_stream(fileStreamB);
         }
         catch (ex) {
           didThrowB = true;
         }
         do_check_eq(didThrowA, didThrowB);
         do_check_eq(moreA, moreB);
         do_check_true(lineA == lineB);
         do_check_eq(fileStreamA.tell(), fileStreamB.tell());
         do_check_eq(fileStreamA.available(), fileStreamB.available());
         if (!moreA)
           break;
       }
     }
     else {
       if (!(test[0] == CUR && (test[1] > fileStreamA.available() ||
                                test[1] < -fileStreamA.tell()))) {
         fileStreamA.seek(test[0], test[1]);
         fileStreamB.seek(test[0], test[1]);
         do_check_eq(fileStreamA.tell(), fileStreamB.tell());
         do_check_eq(fileStreamA.available(), fileStreamB.available());
       }
     }
   }
 }
 function read_line_stream(stream) {
   let line = {};
   let more = stream.readLine(line);
   return [more, line.value];
 }
 function new_file_input_stream(file) {
   var stream =
       Cc["@mozilla.org/network/file-input-stream;1"]
       .createInstance(Ci.nsIFileInputStream);
   stream.init(file, PR_RDONLY, 0, 0);
   return stream.QueryInterface(Ci.nsIInputStream);
 }
 function new_partial_file_input_stream(file, start, length, flags) {
   var stream =
       Cc["@mozilla.org/network/partial-file-input-stream;1"]
       .createInstance(Ci.nsIPartialFileInputStream);
   stream.init(file, start, length, PR_RDONLY, 0, flags || 0);
   return stream.QueryInterface(Ci.nsIInputStream);
 }
 function create_temp_file(data) {
   let file = Cc["@mozilla.org/file/directory_service;1"].
              getService(Ci.nsIProperties).
              get("ProfD", Ci.nsIFile);
   file.append("fileinputstream-test-file.tmp");
   file.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0666);
   let ostream = Cc["@mozilla.org/network/file-output-stream;1"].
                 createInstance(Ci.nsIFileOutputStream);
   ostream.init(file, 0x02 | 0x08 | 0x20, // write, create, truncate
 , 0);
   do_check_eq(ostream.write(data, data.length), data.length);
   ostream.close();
   return file;
 }