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

sql/transaction_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 "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "sql/connection.h"
+#include "sql/correct_sql_test_base.h"
 #include "sql/statement.h"
 #include "sql/transaction.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/sqlite/sqlite3.h"
 
-class SQLTransactionTest : public testing::Test {
+class SQLTransactionTest : public sql::SQLTestBase {
  public:
   void SetUp() override {
-    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
-    ASSERT_TRUE(db_.Open(
-        temp_dir_.path().AppendASCII("SQLTransactionTest.db")));
+    SQLTestBase::SetUp();
 
     ASSERT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
   }
 
-  void TearDown() override { db_.Close(); }
-
-  sql::Connection& db() { return db_; }
-
   // Returns the number of rows in table "foo".
   int CountFoo() {
     sql::Statement count(db().GetUniqueStatement("SELECT count(*) FROM foo"));
     count.Step();
     return count.ColumnInt(0);
   }
-
- private:
-  base::ScopedTempDir temp_dir_;
-  sql::Connection db_;
 };
 
 TEST_F(SQLTransactionTest, Commit) {
   {
     sql::Transaction t(&db());
     EXPECT_FALSE(t.is_open());
     EXPECT_TRUE(t.Begin());
     EXPECT_TRUE(t.is_open());
 
     EXPECT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (1, 2)"));
@@ skipping 73 matching lines @@
     EXPECT_EQ(1, db().transaction_nesting());
     {
       sql::Transaction inner3(&db());
       EXPECT_FALSE(inner3.Begin());
       EXPECT_EQ(1, db().transaction_nesting());
     }
   }
   EXPECT_EQ(0, db().transaction_nesting());
   EXPECT_EQ(0, CountFoo());
 }