Add a basic backwards compatibility unittest.

courgette/base_test_unittest.cc

+// Copyright (c) 2011 The Chromium 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 "courgette/base_test_unittest.h"
+
+#include "base/path_service.h"
+
+void BaseTest::SetUp() {
+  PathService::Get(base::DIR_SOURCE_ROOT, &test_dir_);
+  test_dir_ = test_dir_.AppendASCII("courgette");
+  test_dir_ = test_dir_.AppendASCII("testdata");
+}
+
+void BaseTest::TearDown() {
+}
+
+//  Reads a test file into a string.
+std::string BaseTest::FileContents(const char* file_name) const {
+  FilePath file_path = test_dir_;
+  file_path = file_path.AppendASCII(file_name);
+  std::string file_bytes;
+
+  EXPECT_TRUE(file_util::ReadFileToString(file_path, &file_bytes));
+
+  return file_bytes;
+}