added new tests

tests/dibi/data/mysql.sql

@@ -0,0 +1,52 @@
+/*!40102 SET storage_engine = InnoDB */;
+
+DROP DATABASE IF EXISTS dibi_test;
+CREATE DATABASE dibi_test;
+USE dibi_test;
+
+DROP TABLE IF EXISTS `products`;
+CREATE TABLE `products` (
+  `product_id` int(11) NOT NULL AUTO_INCREMENT,
+  `title` varchar(100) DEFAULT NULL,
+  PRIMARY KEY (`product_id`),
+  KEY `title` (`title`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+INSERT INTO `products` (`product_id`, `title`) VALUES
+(1,	'Chair'),
+(3,	'Computer'),
+(2,	'Table');
+
+DROP TABLE IF EXISTS `customers`;
+CREATE TABLE `customers` (
+  `customer_id` int(11) NOT NULL AUTO_INCREMENT,
+  `name` varchar(100) DEFAULT NULL,
+  PRIMARY KEY (`customer_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+INSERT INTO `customers` (`customer_id`, `name`) VALUES
+(1, 'Dave Lister'),
+(2, 'Arnold Rimmer'),
+(3, 'The Cat'),
+(4, 'Holly'),
+(5, 'Kryten'),
+(6, 'Kristine Kochanski');
+
+DROP TABLE IF EXISTS `orders`;
+CREATE TABLE `orders` (
+  `order_id` int(11) NOT NULL AUTO_INCREMENT,
+  `customer_id` int(11) NOT NULL,
+  `product_id` int(11) NOT NULL,
+  `amount` float NOT NULL,
+  PRIMARY KEY (`order_id`),
+  KEY `customer_id` (`customer_id`),
+  KEY `product_id` (`product_id`),
+  CONSTRAINT `orders_ibfk_4` FOREIGN KEY (`product_id`) REFERENCES `products` (`product_id`) ON UPDATE CASCADE,
+  CONSTRAINT `orders_ibfk_3` FOREIGN KEY (`customer_id`) REFERENCES `customers` (`customer_id`) ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+INSERT INTO `orders` (`order_id`, `customer_id`, `product_id`, `amount`) VALUES
+(1, 2, 1, 7),
+(2, 2, 3, 2),
+(3, 1, 2, 3),
+(4, 6, 3, 5);