Add Backup test

Author: hongshibao

CMakeLists.txt

@@ -112,6 +112,7 @@ set(SQLITECPP_TESTS
  tests/Column_test.cpp
  tests/Database_test.cpp
  tests/Statement_test.cpp
+ tests/Backup_test.cpp
 )
 source_group(tests FILES ${SQLITECPP_TESTS})
 

include/SQLiteCpp/Backup.h

@@ -3,7 +3,7 @@
  * @ingroup SQLiteCpp
  * @brief   Backup is used to backup a database file in a safe and online way.
  *
- * Copyright (c) 2015 Shibao HONG (shibaohong@outlook.com)
+ * Copyright (c) 2015-2015 Shibao HONG (shibaohong@outlook.com)
  *
  * Distributed under the MIT License (MIT) (See accompanying file LICENSE.txt
  * or copy at http://opensource.org/licenses/MIT)

src/Backup.cpp

@@ -3,7 +3,7 @@
  * @ingroup SQLiteCpp
  * @brief   Backup is used to backup a database file in a safe and online way.
  *
- * Copyright (c) 2015 Shibao HONG (shibaohong@outlook.com)
+ * Copyright (c) 2015-2015 Shibao HONG (shibaohong@outlook.com)
  *
  * Distributed under the MIT License (MIT) (See accompanying file LICENSE.txt
  * or copy at http://opensource.org/licenses/MIT)
@@ -85,8 +85,11 @@ int Backup::executeStep(const int aNumPage /* = -1 */)
     if (SQLITE_OK != res && SQLITE_DONE != res &&
             SQLITE_BUSY != res && SQLITE_LOCKED != res)
     {
-        std::string strerr("Backup executeStep error with message ");
+        std::string strerr("Backup executeStep error");
+#if SQLITE_VERSION_NUMBER >= 3007015  // SQLite v3.7.15 is the first version with sqlite3_errstr() interface
+        strerr += "with error message ";
         strerr += sqlite3_errstr(res);
+#endif
         throw SQLite::Exception(strerr);
     }
     return res;

tests/Backup_test.cpp

@@ -0,0 +1,38 @@
+/**
+ * @file    Backup_test.cpp
+ * @ingroup tests
+ * @brief   Test of a SQLite Backup.
+ *
+ * Copyright (c) 2015-2015 Shibao HONG (shibaohong@outlook.com)
+ *
+ * Distributed under the MIT License (MIT) (See accompanying file LICENSE.txt
+ * or copy at http://opensource.org/licenses/MIT)
+ */
+
+#include <SQLiteCpp/Backup.h>
+#include <SQLiteCpp/Database.h>
+#include <SQLiteCpp/Statement.h>
+
+#include <gtest/gtest.h>
+
+#include <cstdio>
+
+TEST(Backup, executeStep) {
+    remove("backup_test.db3");
+    remove("backup_test.db3.backup");
+    SQLite::Database srcDB("backup_test.db3", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE);
+    srcDB.exec("CREATE TABLE backup_test (id INTEGER PRIMARY KEY, value TEXT)");
+    ASSERT_EQ(1, srcDB.exec("INSERT INTO backup_test VALUES (1, \"first\")"));
+    ASSERT_EQ(1, srcDB.exec("INSERT INTO backup_test VALUES (2, \"second\")"));
+    SQLite::Database destDB("backup_test.db3.backup", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE);
+    SQLite::Backup backup(destDB, srcDB);
+    const int res = backup.executeStep();
+    ASSERT_EQ(res, SQLITE_DONE);
+    SQLite::Statement query(destDB, "SELECT * FROM backup_test ORDER BY id ASC");
+    ASSERT_TRUE(query.executeStep());
+    EXPECT_EQ(1, query.getColumn(0).getInt());
+    EXPECT_STREQ("first", query.getColumn(1));
+    ASSERT_TRUE(query.executeStep());
+    EXPECT_EQ(2, query.getColumn(0).getInt());
+    EXPECT_STREQ("second", query.getColumn(1));
+}