Almost there...
git-svn-id: svn://chrome-svn/chromeos/trunk@24 06c00378-0e64-4dae-be16-12b19f9950a1
diff --git a/test_utils.cc b/test_utils.cc
new file mode 100644
index 0000000..2791d44
--- /dev/null
+++ b/test_utils.cc
@@ -0,0 +1,73 @@
+// 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 <sys/stat.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string>
+#include <vector>
+#include "update_engine/test_utils.h"
+#include "glog/logging.h"
+
+#include "update_engine/file_writer.h"
+
+using std::string;
+using std::vector;
+
+namespace chromeos_update_engine {
+
+vector<char> ReadFile(const string& path) {
+ vector<char> ret;
+ FILE* fp = fopen(path.c_str(), "r");
+ if (!fp)
+ return ret;
+ const size_t kChunkSize(1024);
+ size_t read_size;
+ do {
+ char buf[kChunkSize];
+ read_size = fread(buf, 1, kChunkSize, fp);
+ ret.insert(ret.end(), buf, buf + read_size);
+ } while (read_size == kChunkSize);
+ fclose(fp);
+ return ret;
+}
+
+bool WriteFile(const std::string& path, const std::vector<char>& data) {
+ DirectFileWriter writer;
+ if (0 != writer.Open(path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0644)) {
+ return false;
+ }
+ if (static_cast<int>(data.size()) != writer.Write(&data[0], data.size())) {
+ writer.Close();
+ return false;
+ }
+ writer.Close();
+ return true;
+}
+
+off_t FileSize(const string& path) {
+ struct stat stbuf;
+ int rc = stat(path.c_str(), &stbuf);
+ CHECK_EQ(0, rc);
+ if (rc < 0)
+ return rc;
+ return stbuf.st_size;
+}
+
+std::vector<char> GzipCompressData(const std::vector<char>& data) {
+ const char fname[] = "/tmp/GzipCompressDataTemp";
+ if (!WriteFile(fname, data)) {
+ system((string("rm ") + fname).c_str());
+ return vector<char>();
+ }
+ system((string("cat ") + fname + "|gzip>" + fname + ".gz").c_str());
+ system((string("rm ") + fname).c_str());
+ vector<char> ret = ReadFile(string(fname) + ".gz");
+ system((string("rm ") + fname + ".gz").c_str());
+ return ret;
+}
+
+} // namespace chromeos_update_engine