add unit tests for tableExists and dropTable

tests/lib/db/connection.php

@@ -0,0 +1,69 @@
+<?php
+
+/**
+ * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace Test\DB;
+
+use Doctrine\DBAL\Platforms\SqlitePlatform;
+use OC\DB\MDB2SchemaManager;
+
+class Connection extends \Test\TestCase {
+	/**
+	 * @var \OCP\IDBConnection
+	 */
+	private $connection;
+
+	public function setUp() {
+		parent::setUp();
+		$this->connection = \OC::$server->getDatabaseConnection();
+	}
+
+	/**
+	 * @param string $table
+	 */
+	public function assertTableExist($table) {
+		if ($this->connection->getDatabasePlatform() instanceof SqlitePlatform) {
+			// sqlite removes the tables after closing the DB
+			$this->assertTrue(true);
+		} else {
+			$this->assertTrue($this->connection->tableExists($table), 'Table ' . $table . ' exists.');
+		}
+	}
+
+	/**
+	 * @param string $table
+	 */
+	public function assertTableNotExist($table) {
+		if ($this->connection->getDatabasePlatform() instanceof SqlitePlatform) {
+			// sqlite removes the tables after closing the DB
+			$this->assertTrue(true);
+		} else {
+			$this->assertFalse($this->connection->tableExists($table), 'Table ' . $table . ' doesnt exists.');
+		}
+	}
+
+	private function makeTestTable() {
+		$schemaManager = new MDB2SchemaManager($this->connection);
+		$schemaManager->createDbFromStructure(__DIR__ . '/testschema.xml');
+	}
+
+	public function testTableExists() {
+		$this->assertTableNotExist('table');
+		$this->makeTestTable();
+		$this->assertTableExist('table');
+	}
+
+	/**
+	 * @depends testTableExists
+	 */
+	public function testDropTable() {
+		$this->assertTableExist('table');
+		$this->connection->dropTable('table');
+		$this->assertTableNotExist('table');
+	}
+}