Added $tries to Database::transaction

Author: rkrx

tests/Databases/MySQLTest.php

@@ -0,0 +1,35 @@
+<?php
+namespace Kir\MySQL\Databases;
+
+use PDO;
+
+class MySQLTest extends \PHPUnit_Framework_TestCase {
+	public function testTransactionTries1() {
+		$pdo = new PDO('sqlite::memory:');
+		$mysql = new MySQL($pdo);
+
+		$this->setExpectedException('Exception', '5');
+
+		$mysql->transaction(5, function () {
+			static $i;
+			$i++;
+			throw new \Exception($i);
+		});
+	}
+
+	public function testTransactionTries2() {
+		$pdo = new PDO('sqlite::memory:');
+		$mysql = new MySQL($pdo);
+
+		$result = $mysql->transaction(5, function () {
+			static $i;
+			$i++;
+			if($i < 5) {
+				throw new \Exception($i);
+			}
+			return $i;
+		});
+
+		$this->assertEquals(5, $result);
+	}
+}