Put debugging assertions into sql::Statement.

sql/statement_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 <string>
 
 #include "base/file_util.h"
 #include "base/scoped_temp_dir.h"
 #include "sql/connection.h"
 #include "sql/statement.h"
@@ skipping 52 matching lines @@
   void reset_error() const { error_handler_->reset_error(); }
 
  private:
   ScopedTempDir temp_dir_;
   sql::Connection db_;
   scoped_refptr<StatementErrorHandler> error_handler_;
 };
 
 TEST_F(SQLStatementTest, Assign) {
   sql::Statement s;
-  EXPECT_FALSE(s);  // bool conversion operator.
-  EXPECT_TRUE(!s);  // ! operator.
   EXPECT_FALSE(s.is_valid());
 
   s.Assign(db().GetUniqueStatement("CREATE TABLE foo (a, b)"));
-  EXPECT_TRUE(s);
-  EXPECT_FALSE(!s);
   EXPECT_TRUE(s.is_valid());
 }
 
 TEST_F(SQLStatementTest, Run) {
   ASSERT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
   ASSERT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (3, 12)"));
 
   sql::Statement s(db().GetUniqueStatement("SELECT b FROM foo WHERE a=?"));
   EXPECT_FALSE(s.Succeeded());
 
@@ skipping 27 matching lines @@
   // Insert in the foo table the primary key. It is an error to insert
   // something other than an number. This error causes the error callback
   // handler to be called with SQLITE_MISMATCH as error code.
   sql::Statement s(db().GetUniqueStatement("INSERT INTO foo (a) VALUES (?)"));
   EXPECT_TRUE(s.is_valid());
   s.BindCString(0, "bad bad");
   EXPECT_FALSE(s.Run());
   EXPECT_EQ(SQLITE_MISMATCH, sqlite_error());
   reset_error();
 }