src/chrome/installer/util/move_tree_work_item_unittest.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <windows.h>
   6
   7 #include <fstream>
   8
   9 #include "base/base_paths.h"
  10 #include "base/files/file_util.h"
  11 #include "base/files/memory_mapped_file.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/path_service.h"
  14 #include "base/strings/string_util.h"
  15 #include "base/strings/utf_string_conversions.h"
  16 #include "chrome/installer/util/installer_util_test_common.h"
  17 #include "chrome/installer/util/move_tree_work_item.h"
  18 #include "chrome/installer/util/work_item.h"
  19 #include "testing/gtest/include/gtest/gtest.h"
  20
  21 namespace {
  22 class MoveTreeWorkItemTest : public testing::Test {
  23  protected:
  24   virtual void SetUp() {
  25     ASSERT_TRUE(temp_from_dir_.CreateUniqueTempDir());
  26     ASSERT_TRUE(temp_to_dir_.CreateUniqueTempDir());
  27   }
  28
  29   base::ScopedTempDir temp_from_dir_;
  30   base::ScopedTempDir temp_to_dir_;
  31 };
  32
  33 // Simple function to dump some text into a new file.
  34 void CreateTextFile(const std::wstring& filename,
  35                     const std::wstring& contents) {
  36   std::wofstream file;
  37   file.open(base::UTF16ToASCII(filename).c_str());
  38   ASSERT_TRUE(file.is_open());
  39   file << contents;
  40   file.close();
  41 }
  42
  43 // Simple function to read text from a file.
  44 std::wstring ReadTextFile(const base::FilePath& path) {
  45   WCHAR contents[64];
  46   std::wifstream file;
  47   file.open(base::UTF16ToASCII(path.value()).c_str());
  48   EXPECT_TRUE(file.is_open());
  49   file.getline(contents, arraysize(contents));
  50   file.close();
  51   return std::wstring(contents);
  52 }
  53
  54 const wchar_t kTextContent1[] = L"Gooooooooooooooooooooogle";
  55 const wchar_t kTextContent2[] = L"Overwrite Me";
  56 };  // namespace
  57
  58 // Move one directory from source to destination when destination does not
  59 // exist.
  60 TEST_F(MoveTreeWorkItemTest, MoveDirectory) {
  61   // Create two level deep source dir
  62   base::FilePath from_dir1(temp_from_dir_.path());
  63   from_dir1 = from_dir1.AppendASCII("From_Dir1");
  64   base::CreateDirectory(from_dir1);
  65   ASSERT_TRUE(base::PathExists(from_dir1));
  66
  67   base::FilePath from_dir2(from_dir1);
  68   from_dir2 = from_dir2.AppendASCII("From_Dir2");
  69   base::CreateDirectory(from_dir2);
  70   ASSERT_TRUE(base::PathExists(from_dir2));
  71
  72   base::FilePath from_file(from_dir2);
  73   from_file = from_file.AppendASCII("From_File");
  74   CreateTextFile(from_file.value(), kTextContent1);
  75   ASSERT_TRUE(base::PathExists(from_file));
  76
  77   // Generate destination path
  78   base::FilePath to_dir(temp_from_dir_.path());
  79   to_dir = to_dir.AppendASCII("To_Dir");
  80   ASSERT_FALSE(base::PathExists(to_dir));
  81
  82   base::FilePath to_file(to_dir);
  83   to_file = to_file.AppendASCII("From_Dir2");
  84   to_file = to_file.AppendASCII("From_File");
  85   ASSERT_FALSE(base::PathExists(to_file));
  86
  87   // test Do()
  88   scoped_ptr<MoveTreeWorkItem> work_item(
  89       WorkItem::CreateMoveTreeWorkItem(from_dir1,
  90                                        to_dir,
  91                                        temp_to_dir_.path(),
  92                                        WorkItem::ALWAYS_MOVE));
  93   EXPECT_TRUE(work_item->Do());
  94
  95   EXPECT_FALSE(base::PathExists(from_dir1));
  96   EXPECT_TRUE(base::PathExists(to_dir));
  97   EXPECT_TRUE(base::PathExists(to_file));
  98
  99   // test rollback()
 100   work_item->Rollback();
 101
 102   EXPECT_TRUE(base::PathExists(from_dir1));
 103   EXPECT_TRUE(base::PathExists(from_file));
 104   EXPECT_FALSE(base::PathExists(to_dir));
 105 }
 106
 107 // Move one directory from source to destination when destination already
 108 // exists.
 109 TEST_F(MoveTreeWorkItemTest, MoveDirectoryDestExists) {
 110   // Create two level deep source dir
 111   base::FilePath from_dir1(temp_from_dir_.path());
 112   from_dir1 = from_dir1.AppendASCII("From_Dir1");
 113   base::CreateDirectory(from_dir1);
 114   ASSERT_TRUE(base::PathExists(from_dir1));
 115
 116   base::FilePath from_dir2(from_dir1);
 117   from_dir2 = from_dir2.AppendASCII("From_Dir2");
 118   base::CreateDirectory(from_dir2);
 119   ASSERT_TRUE(base::PathExists(from_dir2));
 120
 121   base::FilePath from_file(from_dir2);
 122   from_file = from_file.AppendASCII("From_File");
 123   CreateTextFile(from_file.value(), kTextContent1);
 124   ASSERT_TRUE(base::PathExists(from_file));
 125
 126   // Create destination path
 127   base::FilePath to_dir(temp_from_dir_.path());
 128   to_dir = to_dir.AppendASCII("To_Dir");
 129   base::CreateDirectory(to_dir);
 130   ASSERT_TRUE(base::PathExists(to_dir));
 131
 132   base::FilePath orig_to_file(to_dir);
 133   orig_to_file = orig_to_file.AppendASCII("To_File");
 134   CreateTextFile(orig_to_file.value(), kTextContent2);
 135   ASSERT_TRUE(base::PathExists(orig_to_file));
 136
 137   base::FilePath new_to_file(to_dir);
 138   new_to_file = new_to_file.AppendASCII("From_Dir2");
 139   new_to_file = new_to_file.AppendASCII("From_File");
 140   ASSERT_FALSE(base::PathExists(new_to_file));
 141
 142   // test Do(), don't check for duplicates.
 143   scoped_ptr<MoveTreeWorkItem> work_item(
 144       WorkItem::CreateMoveTreeWorkItem(from_dir1,
 145                                        to_dir,
 146                                        temp_to_dir_.path(),
 147                                        WorkItem::ALWAYS_MOVE));
 148   EXPECT_TRUE(work_item->Do());
 149
 150   EXPECT_FALSE(base::PathExists(from_dir1));
 151   EXPECT_TRUE(base::PathExists(to_dir));
 152   EXPECT_TRUE(base::PathExists(new_to_file));
 153   EXPECT_FALSE(base::PathExists(orig_to_file));
 154
 155   // test rollback()
 156   work_item->Rollback();
 157
 158   EXPECT_TRUE(base::PathExists(from_dir1));
 159   EXPECT_TRUE(base::PathExists(to_dir));
 160   EXPECT_FALSE(base::PathExists(new_to_file));
 161   EXPECT_TRUE(base::PathExists(orig_to_file));
 162   EXPECT_EQ(0, ReadTextFile(orig_to_file).compare(kTextContent2));
 163   EXPECT_EQ(0, ReadTextFile(from_file).compare(kTextContent1));
 164 }
 165
 166 // Move one file from source to destination when destination does not
 167 // exist.
 168 TEST_F(MoveTreeWorkItemTest, MoveAFile) {
 169   // Create a file inside source dir
 170   base::FilePath from_dir(temp_from_dir_.path());
 171   from_dir = from_dir.AppendASCII("From_Dir");
 172   base::CreateDirectory(from_dir);
 173   ASSERT_TRUE(base::PathExists(from_dir));
 174
 175   base::FilePath from_file(from_dir);
 176   from_file = from_file.AppendASCII("From_File");
 177   CreateTextFile(from_file.value(), kTextContent1);
 178   ASSERT_TRUE(base::PathExists(from_file));
 179
 180   // Generate destination file name
 181   base::FilePath to_file(temp_from_dir_.path());
 182   to_file = to_file.AppendASCII("To_File");
 183   ASSERT_FALSE(base::PathExists(to_file));
 184
 185   // test Do()
 186   scoped_ptr<MoveTreeWorkItem> work_item(
 187       WorkItem::CreateMoveTreeWorkItem(from_file,
 188                                        to_file,
 189                                        temp_to_dir_.path(),
 190                                        WorkItem::ALWAYS_MOVE));
 191   EXPECT_TRUE(work_item->Do());
 192
 193   EXPECT_TRUE(base::PathExists(from_dir));
 194   EXPECT_FALSE(base::PathExists(from_file));
 195   EXPECT_TRUE(base::PathExists(to_file));
 196   EXPECT_EQ(0, ReadTextFile(to_file).compare(kTextContent1));
 197
 198   // test rollback()
 199   work_item->Rollback();
 200
 201   EXPECT_TRUE(base::PathExists(from_dir));
 202   EXPECT_TRUE(base::PathExists(from_file));
 203   EXPECT_FALSE(base::PathExists(to_file));
 204   EXPECT_EQ(0, ReadTextFile(from_file).compare(kTextContent1));
 205 }
 206
 207 // Move one file from source to destination when destination already
 208 // exists.
 209 TEST_F(MoveTreeWorkItemTest, MoveFileDestExists) {
 210   // Create a file inside source dir
 211   base::FilePath from_dir(temp_from_dir_.path());
 212   from_dir = from_dir.AppendASCII("From_Dir");
 213   base::CreateDirectory(from_dir);
 214   ASSERT_TRUE(base::PathExists(from_dir));
 215
 216   base::FilePath from_file(from_dir);
 217   from_file = from_file.AppendASCII("From_File");
 218   CreateTextFile(from_file.value(), kTextContent1);
 219   ASSERT_TRUE(base::PathExists(from_file));
 220
 221   // Create destination path
 222   base::FilePath to_dir(temp_from_dir_.path());
 223   to_dir = to_dir.AppendASCII("To_Dir");
 224   base::CreateDirectory(to_dir);
 225   ASSERT_TRUE(base::PathExists(to_dir));
 226
 227   base::FilePath to_file(to_dir);
 228   to_file = to_file.AppendASCII("To_File");
 229   CreateTextFile(to_file.value(), kTextContent2);
 230   ASSERT_TRUE(base::PathExists(to_file));
 231
 232   // test Do()
 233   scoped_ptr<MoveTreeWorkItem> work_item(
 234       WorkItem::CreateMoveTreeWorkItem(from_file,
 235                                        to_dir,
 236                                        temp_to_dir_.path(),
 237                                        WorkItem::ALWAYS_MOVE));
 238   EXPECT_TRUE(work_item->Do());
 239
 240   EXPECT_TRUE(base::PathExists(from_dir));
 241   EXPECT_FALSE(base::PathExists(from_file));
 242   EXPECT_TRUE(base::PathExists(to_dir));
 243   EXPECT_FALSE(base::PathExists(to_file));
 244   EXPECT_EQ(0, ReadTextFile(to_dir).compare(kTextContent1));
 245
 246   // test rollback()
 247   work_item->Rollback();
 248
 249   EXPECT_TRUE(base::PathExists(from_dir));
 250   EXPECT_EQ(0, ReadTextFile(from_file).compare(kTextContent1));
 251   EXPECT_TRUE(base::PathExists(to_dir));
 252   EXPECT_EQ(0, ReadTextFile(to_file).compare(kTextContent2));
 253 }
 254
 255 // Move one file from source to destination when destination already
 256 // exists and is in use.
 257 TEST_F(MoveTreeWorkItemTest, MoveFileDestInUse) {
 258   // Create a file inside source dir
 259   base::FilePath from_dir(temp_from_dir_.path());
 260   from_dir = from_dir.AppendASCII("From_Dir");
 261   base::CreateDirectory(from_dir);
 262   ASSERT_TRUE(base::PathExists(from_dir));
 263
 264   base::FilePath from_file(from_dir);
 265   from_file = from_file.AppendASCII("From_File");
 266   CreateTextFile(from_file.value(), kTextContent1);
 267   ASSERT_TRUE(base::PathExists(from_file));
 268
 269   // Create an executable in destination path by copying ourself to it.
 270   base::FilePath to_dir(temp_from_dir_.path());
 271   to_dir = to_dir.AppendASCII("To_Dir");
 272   base::CreateDirectory(to_dir);
 273   ASSERT_TRUE(base::PathExists(to_dir));
 274
 275   wchar_t exe_full_path_str[MAX_PATH];
 276   ::GetModuleFileName(NULL, exe_full_path_str, MAX_PATH);
 277   base::FilePath exe_full_path(exe_full_path_str);
 278   base::FilePath to_file(to_dir);
 279   to_file = to_file.AppendASCII("To_File");
 280   base::CopyFile(exe_full_path, to_file);
 281   ASSERT_TRUE(base::PathExists(to_file));
 282
 283   // Run the executable in destination path
 284   STARTUPINFOW si = {sizeof(si)};
 285   PROCESS_INFORMATION pi = {0};
 286   ASSERT_TRUE(::CreateProcess(NULL,
 287                               const_cast<wchar_t*>(to_file.value().c_str()),
 288                               NULL, NULL, FALSE,
 289                               CREATE_NO_WINDOW | CREATE_SUSPENDED,
 290                               NULL, NULL, &si, &pi));
 291
 292   // test Do()
 293   scoped_ptr<MoveTreeWorkItem> work_item(
 294       WorkItem::CreateMoveTreeWorkItem(from_file,
 295                                        to_file,
 296                                        temp_to_dir_.path(),
 297                                        WorkItem::ALWAYS_MOVE));
 298   EXPECT_TRUE(work_item->Do());
 299
 300   EXPECT_TRUE(base::PathExists(from_dir));
 301   EXPECT_FALSE(base::PathExists(from_file));
 302   EXPECT_TRUE(base::PathExists(to_dir));
 303   EXPECT_EQ(0, ReadTextFile(to_file).compare(kTextContent1));
 304
 305   // test rollback()
 306   work_item->Rollback();
 307
 308   EXPECT_TRUE(base::PathExists(from_dir));
 309   EXPECT_EQ(0, ReadTextFile(from_file).compare(kTextContent1));
 310   EXPECT_TRUE(base::PathExists(to_dir));
 311   EXPECT_TRUE(base::ContentsEqual(exe_full_path, to_file));
 312
 313   TerminateProcess(pi.hProcess, 0);
 314   EXPECT_TRUE(WaitForSingleObject(pi.hProcess, 10000) == WAIT_OBJECT_0);
 315   CloseHandle(pi.hProcess);
 316   CloseHandle(pi.hThread);
 317 }
 318
 319 // Move one file that is in use to destination.
 320 TEST_F(MoveTreeWorkItemTest, MoveFileInUse) {
 321   // Create an executable for source by copying ourself to a new source dir.
 322   base::FilePath from_dir(temp_from_dir_.path());
 323   from_dir = from_dir.AppendASCII("From_Dir");
 324   base::CreateDirectory(from_dir);
 325   ASSERT_TRUE(base::PathExists(from_dir));
 326
 327   wchar_t exe_full_path_str[MAX_PATH];
 328   ::GetModuleFileName(NULL, exe_full_path_str, MAX_PATH);
 329   base::FilePath exe_full_path(exe_full_path_str);
 330   base::FilePath from_file(from_dir);
 331   from_file = from_file.AppendASCII("From_File");
 332   base::CopyFile(exe_full_path, from_file);
 333   ASSERT_TRUE(base::PathExists(from_file));
 334
 335   // Create a destination source dir and generate destination file name.
 336   base::FilePath to_dir(temp_from_dir_.path());
 337   to_dir = to_dir.AppendASCII("To_Dir");
 338   base::CreateDirectory(to_dir);
 339   ASSERT_TRUE(base::PathExists(to_dir));
 340
 341   base::FilePath to_file(to_dir);
 342   to_file = to_file.AppendASCII("To_File");
 343   CreateTextFile(to_file.value(), kTextContent1);
 344   ASSERT_TRUE(base::PathExists(to_file));
 345
 346   // Run the executable in source path
 347   STARTUPINFOW si = {sizeof(si)};
 348   PROCESS_INFORMATION pi = {0};
 349   ASSERT_TRUE(::CreateProcess(NULL,
 350                               const_cast<wchar_t*>(from_file.value().c_str()),
 351                               NULL, NULL, FALSE,
 352                               CREATE_NO_WINDOW | CREATE_SUSPENDED,
 353                               NULL, NULL, &si, &pi));
 354
 355   // test Do()
 356   scoped_ptr<MoveTreeWorkItem> work_item(
 357       WorkItem::CreateMoveTreeWorkItem(from_file,
 358                                        to_file,
 359                                        temp_to_dir_.path(),
 360                                        WorkItem::ALWAYS_MOVE));
 361   EXPECT_TRUE(work_item->Do());
 362
 363   EXPECT_TRUE(base::PathExists(from_dir));
 364   EXPECT_FALSE(base::PathExists(from_file));
 365   EXPECT_TRUE(base::PathExists(to_dir));
 366   EXPECT_TRUE(base::ContentsEqual(exe_full_path, to_file));
 367
 368   // Close the process and make sure all the conditions after Do() are
 369   // still true.
 370   TerminateProcess(pi.hProcess, 0);
 371   EXPECT_TRUE(WaitForSingleObject(pi.hProcess, 10000) == WAIT_OBJECT_0);
 372   CloseHandle(pi.hProcess);
 373   CloseHandle(pi.hThread);
 374
 375   EXPECT_TRUE(base::PathExists(from_dir));
 376   EXPECT_FALSE(base::PathExists(from_file));
 377   EXPECT_TRUE(base::PathExists(to_dir));
 378   EXPECT_TRUE(base::ContentsEqual(exe_full_path, to_file));
 379
 380   // test rollback()
 381   work_item->Rollback();
 382
 383   EXPECT_TRUE(base::PathExists(from_dir));
 384   EXPECT_TRUE(base::ContentsEqual(exe_full_path, from_file));
 385   EXPECT_TRUE(base::PathExists(to_dir));
 386   EXPECT_EQ(0, ReadTextFile(to_file).compare(kTextContent1));
 387 }
 388
 389 // Move one directory from source to destination when destination already
 390 // exists.
 391 TEST_F(MoveTreeWorkItemTest, MoveDirectoryDestExistsCheckForDuplicatesFull) {
 392   // Create two level deep source dir
 393   base::FilePath from_dir1(temp_from_dir_.path());
 394   from_dir1 = from_dir1.AppendASCII("From_Dir1");
 395   base::CreateDirectory(from_dir1);
 396   ASSERT_TRUE(base::PathExists(from_dir1));
 397
 398   base::FilePath from_dir2(from_dir1);
 399   from_dir2 = from_dir2.AppendASCII("From_Dir2");
 400   base::CreateDirectory(from_dir2);
 401   ASSERT_TRUE(base::PathExists(from_dir2));
 402
 403   base::FilePath from_file(from_dir2);
 404   from_file = from_file.AppendASCII("From_File");
 405   CreateTextFile(from_file.value(), kTextContent1);
 406   ASSERT_TRUE(base::PathExists(from_file));
 407
 408   // // Create a file hierarchy identical to the one in the source directory.
 409   base::FilePath to_dir(temp_from_dir_.path());
 410   to_dir = to_dir.AppendASCII("To_Dir");
 411   ASSERT_TRUE(installer::test::CopyFileHierarchy(from_dir1, to_dir));
 412
 413   // Lock one of the files in the to destination directory to prevent moves.
 414   base::FilePath orig_to_file(
 415       to_dir.AppendASCII("From_Dir2").AppendASCII("From_File"));
 416   base::MemoryMappedFile mapped_file;
 417   EXPECT_TRUE(mapped_file.Initialize(orig_to_file));
 418
 419   // First check that we can't do the regular Move().
 420   scoped_ptr<MoveTreeWorkItem> work_item(
 421       WorkItem::CreateMoveTreeWorkItem(from_dir1,
 422                                        to_dir,
 423                                        temp_to_dir_.path(),
 424                                        WorkItem::ALWAYS_MOVE));
 425   EXPECT_FALSE(work_item->Do());
 426   work_item->Rollback();
 427
 428   // Now test Do() with the check for duplicates. This should pass.
 429   work_item.reset(
 430       WorkItem::CreateMoveTreeWorkItem(from_dir1,
 431                                        to_dir,
 432                                        temp_to_dir_.path(),
 433                                        WorkItem::CHECK_DUPLICATES));
 434   EXPECT_TRUE(work_item->Do());
 435
 436   // Make sure that we "moved" the files, i.e. that the source directory isn't
 437   // there anymore,
 438   EXPECT_FALSE(base::PathExists(from_dir1));
 439   // Make sure that the original directory structure and file are still present.
 440   EXPECT_TRUE(base::PathExists(to_dir));
 441   EXPECT_TRUE(base::PathExists(orig_to_file));
 442   // Make sure that the backup path is not empty.
 443   EXPECT_FALSE(base::IsDirectoryEmpty(temp_to_dir_.path()));
 444
 445   // Check that the work item believes the source to have been moved.
 446   EXPECT_TRUE(work_item->source_moved_to_backup_);
 447   EXPECT_FALSE(work_item->moved_to_dest_path_);
 448   EXPECT_FALSE(work_item->moved_to_backup_);
 449
 450   // test rollback()
 451   work_item->Rollback();
 452
 453   // Once we rollback all the original files should still be there, as should
 454   // the source files.
 455   EXPECT_TRUE(base::PathExists(from_dir1));
 456   EXPECT_TRUE(base::PathExists(to_dir));
 457   EXPECT_TRUE(base::PathExists(orig_to_file));
 458   EXPECT_EQ(0, ReadTextFile(orig_to_file).compare(kTextContent1));
 459   EXPECT_EQ(0, ReadTextFile(from_file).compare(kTextContent1));
 460 }
 461
 462 // Move one directory from source to destination when destination already
 463 // exists but contains only a subset of the files in source.
 464 TEST_F(MoveTreeWorkItemTest, MoveDirectoryDestExistsCheckForDuplicatesPartial) {
 465   // Create two level deep source dir
 466   base::FilePath from_dir1(temp_from_dir_.path());
 467   from_dir1 = from_dir1.AppendASCII("From_Dir1");
 468   base::CreateDirectory(from_dir1);
 469   ASSERT_TRUE(base::PathExists(from_dir1));
 470
 471   base::FilePath from_dir2(from_dir1);
 472   from_dir2 = from_dir2.AppendASCII("From_Dir2");
 473   base::CreateDirectory(from_dir2);
 474   ASSERT_TRUE(base::PathExists(from_dir2));
 475
 476   base::FilePath from_file(from_dir2);
 477   from_file = from_file.AppendASCII("From_File");
 478   CreateTextFile(from_file.value(), kTextContent1);
 479   ASSERT_TRUE(base::PathExists(from_file));
 480
 481   base::FilePath from_file2(from_dir2);
 482   from_file2 = from_file2.AppendASCII("From_File2");
 483   CreateTextFile(from_file2.value(), kTextContent2);
 484   ASSERT_TRUE(base::PathExists(from_file2));
 485
 486   // Create destination path
 487   base::FilePath to_dir(temp_from_dir_.path());
 488   to_dir = to_dir.AppendASCII("To_Dir");
 489   base::CreateDirectory(to_dir);
 490   ASSERT_TRUE(base::PathExists(to_dir));
 491
 492   // Create a sub-directory of the same name as in the source directory.
 493   base::FilePath to_dir2(to_dir);
 494   to_dir2 = to_dir2.AppendASCII("From_Dir2");
 495   base::CreateDirectory(to_dir2);
 496   ASSERT_TRUE(base::PathExists(to_dir2));
 497
 498   // Create one of the files in the to sub-directory, but not the other.
 499   base::FilePath orig_to_file(to_dir2);
 500   orig_to_file = orig_to_file.AppendASCII("From_File");
 501   CreateTextFile(orig_to_file.value(), kTextContent1);
 502   ASSERT_TRUE(base::PathExists(orig_to_file));
 503
 504   // test Do(), check for duplicates.
 505   scoped_ptr<MoveTreeWorkItem> work_item(
 506       WorkItem::CreateMoveTreeWorkItem(from_dir1,
 507                                        to_dir,
 508                                        temp_to_dir_.path(),
 509                                        WorkItem::CHECK_DUPLICATES));
 510   EXPECT_TRUE(work_item->Do());
 511
 512   // Make sure that we "moved" the files, i.e. that the source directory isn't
 513   // there anymore,
 514   EXPECT_FALSE(base::PathExists(from_dir1));
 515   // Make sure that the original directory structure and file are still present.
 516   EXPECT_TRUE(base::PathExists(to_dir));
 517   EXPECT_TRUE(base::PathExists(orig_to_file));
 518   // Make sure that the backup path is not empty.
 519   EXPECT_FALSE(base::IsDirectoryEmpty(temp_to_dir_.path()));
 520   // Make sure that the "new" file is also present.
 521   base::FilePath new_to_file2(to_dir2);
 522   new_to_file2 = new_to_file2.AppendASCII("From_File2");
 523   EXPECT_TRUE(base::PathExists(new_to_file2));
 524
 525   // Check that the work item believes that this was a regular move.
 526   EXPECT_FALSE(work_item->source_moved_to_backup_);
 527   EXPECT_TRUE(work_item->moved_to_dest_path_);
 528   EXPECT_TRUE(work_item->moved_to_backup_);
 529
 530   // test rollback()
 531   work_item->Rollback();
 532
 533   // Once we rollback all the original files should still be there, as should
 534   // the source files.
 535   EXPECT_TRUE(base::PathExists(from_dir1));
 536   EXPECT_TRUE(base::PathExists(to_dir));
 537   EXPECT_TRUE(base::PathExists(orig_to_file));
 538   EXPECT_EQ(0, ReadTextFile(orig_to_file).compare(kTextContent1));
 539   EXPECT_EQ(0, ReadTextFile(from_file).compare(kTextContent1));
 540
 541   // Also, after rollback the new "to" file should be gone.
 542   EXPECT_FALSE(base::PathExists(new_to_file2));
 543 }