Adding schema and initial Query Builder code coverage
diff --git a/tests/mocks/database/ci_test.sqlite b/tests/mocks/database/ci_test.sqlite
index 37ce4f8..86d868a 100755
--- a/tests/mocks/database/ci_test.sqlite
+++ b/tests/mocks/database/ci_test.sqlite
Binary files differ
diff --git a/tests/mocks/database/config/sqlite.php b/tests/mocks/database/config/sqlite.php
index c70986e..75fdacd 100644
--- a/tests/mocks/database/config/sqlite.php
+++ b/tests/mocks/database/config/sqlite.php
@@ -9,7 +9,7 @@
 		'username' => 'sqlite',
 		'password' => 'sqlite',
 		'database' => realpath(__DIR__.'/..').'/ci_test.sqlite',
-		'dbdriver' => is_php('5.4') ? 'sqlite3' : 'sqlite',
+		'dbdriver' => 'sqlite3',
 	),
 
 	// Database configuration with failover
@@ -19,7 +19,7 @@
 		'username' => 'sqlite',
 		'password' => 'sqlite',
 		'database' => '../not_exists.sqlite',
-		'dbdriver' => is_php('5.4') ? 'sqlite3' : 'sqlite',
+		'dbdriver' => 'sqlite3',
 		'failover' => array(
 			array(
 				'dsn' => '',
@@ -27,7 +27,7 @@
 				'username' => 'sqlite',
 				'password' => 'sqlite',
 				'database' => realpath(__DIR__.'/..').'/ci_testf.sqlite',
-				'dbdriver' => is_php('5.4') ? 'sqlite3' : 'sqlite',
+				'dbdriver' => 'sqlite3',
 			),
 		),
 	),
diff --git a/tests/mocks/database/db/driver.php b/tests/mocks/database/db/driver.php
index 9bf5231..cb18202 100644
--- a/tests/mocks/database/db/driver.php
+++ b/tests/mocks/database/db/driver.php
@@ -33,4 +33,4 @@
 	}
 }
 
-class CI_DB extends CI_DB_Driver {}
\ No newline at end of file
+class CI_DB extends Mock_Database_DB_QueryBuilder {}
\ No newline at end of file
diff --git a/tests/mocks/database/schema/.gitkeep b/tests/mocks/database/schema/.gitkeep
deleted file mode 100644
index e69de29..0000000
--- a/tests/mocks/database/schema/.gitkeep
+++ /dev/null