AU: Class to perform delta updates.

src/platform/update_engine/test_utils.cc

 // Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "update_engine/test_utils.h"
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ skipping 172 matching lines @@
     input_counter++;
     input_counter %= sizeof(kRandomString);
   }
 }
 
 void CreateExtImageAtPath(const string& path, vector<string>* out_paths) {
   // create 10MiB sparse file
   EXPECT_EQ(0, System(StringPrintf("dd if=/dev/zero of=%s"
                                    " seek=10485759 bs=1 count=1",
                                    path.c_str())));
-  EXPECT_EQ(0, System(StringPrintf("mkfs.ext3 -F %s", path.c_str())));
+  EXPECT_EQ(0, System(StringPrintf("mkfs.ext3 -b 4096 -F %s", path.c_str())));
   EXPECT_EQ(0, System(StringPrintf("mkdir -p %s", kMountPath)));
   EXPECT_EQ(0, System(StringPrintf("mount -o loop %s %s", path.c_str(),
                                    kMountPath)));
   EXPECT_EQ(0, System(StringPrintf("echo hi > %s/hi", kMountPath)));
   EXPECT_EQ(0, System(StringPrintf("echo hello > %s/hello", kMountPath)));
   EXPECT_EQ(0, System(StringPrintf("mkdir %s/some_dir", kMountPath)));
   EXPECT_EQ(0, System(StringPrintf("mkdir %s/some_dir/empty_dir", kMountPath)));
   EXPECT_EQ(0, System(StringPrintf("mkdir %s/some_dir/mnt", kMountPath)));
   EXPECT_EQ(0, System(StringPrintf("echo T > %s/some_dir/test", kMountPath)));
   EXPECT_EQ(0, System(StringPrintf("mkfifo %s/some_dir/fifo", kMountPath)));
@@ skipping 60 matching lines @@
   EXPECT_TRUE(expected_paths.empty());
   if (!expected_paths.empty()) {
     for (set<string>::const_iterator it = expected_paths.begin();
          it != expected_paths.end(); ++it) {
       LOG(INFO) << "extra path: " << *it;
     }
   }
 }
 
 }  // namespace chromeos_update_engine