mandoline filesystem: add a sqlite3 vfs to proxy filesystem usage.

sql/test/sql_test_base.cc

+// Copyright 2015 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 "sql/test/sql_test_base.h"
+
+#include "base/files/file_util.h"
+#include "sql/test/test_helpers.h"
+
+namespace sql {
+
+SQLTestBase::SQLTestBase() {
+}
+
+SQLTestBase::~SQLTestBase() {
+}
+
+base::FilePath SQLTestBase::db_path() {
+  return temp_dir_.path().AppendASCII("SQLTest.db");
+}
+
+sql::Connection& SQLTestBase::db() {
+  return db_;
+}
+
+bool SQLTestBase::Reopen() {
+  db_.Close();
+  return db_.Open(db_path());
+}
+
+bool SQLTestBase::GetPathExists(const base::FilePath& path) {
+  return base::PathExists(path);
+}
+
+bool SQLTestBase::CorruptSizeInHeaderOfDB() {
+  return sql::test::CorruptSizeInHeader(db_path());
+}
+
+void SQLTestBase::WriteJunkToDatabase(WriteJunkType type) {
+  base::ScopedFILE file(base::OpenFile(
+      db_path(),
+      type == TYPE_OVERWRITE_AND_TRUNCATE ? "wb" : "rb+"));
+  ASSERT_TRUE(file.get() != NULL);
+  ASSERT_EQ(0, fseek(file.get(), 0, SEEK_SET));
+
+  const char* kJunk = "Now is the winter of our discontent.";
+  fputs(kJunk, file.get());
+}
+
+void SQLTestBase::TruncateDatabase() {
+  base::ScopedFILE file(base::OpenFile(db_path(), "rb+"));
+  ASSERT_TRUE(file.get() != NULL);
+  ASSERT_EQ(0, fseek(file.get(), 0, SEEK_SET));
+  ASSERT_TRUE(base::TruncateFile(file.get()));
+}
+
+void SQLTestBase::SetUp() {
+  ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
+  ASSERT_TRUE(db_.Open(db_path()));
+}
+
+void SQLTestBase::TearDown() {
+  db_.Close();
+}
+
+}  // namespace sql