[2.0] Solved the hassle with dropping/creating the test database through introducing a second test database for temporary connections. Please check the dbproperties.xml.dev file for reference. The 2 test databases need to be created *once* before the very first time of running the tests. New procedure successfully tested against mysql, postgresql, oracle.

lib/Doctrine/DBAL/Connection.php

@@ -211,6 +211,46 @@ class Connection
     {
         return $this->_driver->getDatabase($this);
     }
+    
+    /**
+     * Gets the hostname of the currently connected database.
+     * 
+     * @return string
+     */
+    public function getHost()
+    {
+        return $this->_params['host'];
+    }
+    
+    /**
+     * Gets the port of the currently connected database.
+     * 
+     * @return mixed
+     */
+    public function getPort()
+    {
+        return $this->_params['port'];
+    }
+    
+    /**
+     * Gets the username used by this connection.
+     * 
+     * @return string
+     */
+    public function getUsername()
+    {
+        return $this->_params['user'];
+    }
+    
+    /**
+     * Gets the password used by this connection.
+     * 
+     * @return string
+     */
+    public function getPassword()
+    {
+        return $this->_params['password'];
+    }
 
     /**
      * Gets the DBAL driver instance.
@@ -349,8 +389,8 @@ class Connection
         }
 
         $query = 'DELETE FROM '
-        . $this->quoteIdentifier($tableName)
+                . $this->quoteIdentifier($tableName)
-        . ' WHERE ' . implode(' AND ', $criteria);
+                . ' WHERE ' . implode(' AND ', $criteria);
 
         return $this->exec($query, array_values($identifier));
     }
@@ -578,8 +618,7 @@ class Connection
      *
      * @param string $query     sql query
      * @param array $params     query parameters
-     *
+     * @return integer
-     * @return PDOStatement
      * @todo Rename to executeUpdate().
      */
     public function exec($query, array $params = array())

lib/Doctrine/DBAL/Schema/AbstractSchemaManager.php

@@ -227,19 +227,15 @@ abstract class AbstractSchemaManager
     }
 
     /**
-     * Drop the database for this connection
+     * Drops a database.
+     * 
+     * NOTE: You can not drop the database this SchemaManager is currently connected to.
      *
      * @param  string $database The name of the database to drop
-     * @return boolean $result
      */
-    public function dropDatabase($database = null)
+    public function dropDatabase($database)
     {
-        if (is_null($database)) {
+        $this->_conn->exec($this->_platform->getDropDatabaseSql($database));
-            $database = $this->_conn->getDatabase();
-        }
-        $sql = $this->_platform->getDropDatabaseSql($database);
-
-        return $this->_executeSql($sql, 'execute');
     }
 
     /**

lib/Doctrine/DBAL/Schema/PostgreSqlSchemaManager.php

@@ -264,26 +264,4 @@ class PostgreSqlSchemaManager extends AbstractSchemaManager
 
         return array_merge($decl, $description);
     }
-    
-    /**
-     * Drops a database.
-     * If no database name is given, then the database this SchemaManager is
-     * currently connected to is dropped. In order to do this, the connection is
-     * closed and reopened on the "template1" database.
-     *
-     * @param  string $database The name of the database to drop.
-     * @return boolean $result
-     * @override
-     */
-    public function dropDatabase($database = null)
-    {
-        if (is_null($database)) {
-            //TODO: How to deal with this? We need to connect to another database
-            //      in order to drop this one!
-            $database = $this->_conn->getDatabase();
-        }
-        $sql = $this->_platform->getDropDatabaseSql($database);
-        
-        return $this->_executeSql($sql, 'execute');
-    }
 }

tests/Doctrine/Tests/DbalFunctionalTestSuite.php

@@ -13,6 +13,7 @@ class DbalFunctionalTestSuite extends DbalTestSuite
     
     protected function tearDown()
     {
+        $this->sharedFixture['conn']->close();
         $this->sharedFixture = null;
     }
 }

tests/Doctrine/Tests/TestUtil.php

@@ -33,8 +33,10 @@ class TestUtil
     public static function getConnection()
     {
         if (isset($GLOBALS['db_type'], $GLOBALS['db_username'], $GLOBALS['db_password'],
-                $GLOBALS['db_host'], $GLOBALS['db_name'], $GLOBALS['db_port'])) {
+                $GLOBALS['db_host'], $GLOBALS['db_name'], $GLOBALS['db_port']) &&
-            $params = array(
+           isset($GLOBALS['tmpdb_type'], $GLOBALS['tmpdb_username'], $GLOBALS['tmpdb_password'],
+                $GLOBALS['tmpdb_host'], $GLOBALS['tmpdb_name'], $GLOBALS['tmpdb_port'])) {
+            $realDbParams = array(
                 'driver' => $GLOBALS['db_type'],
                 'user' => $GLOBALS['db_username'],
                 'password' => $GLOBALS['db_password'],
@@ -42,10 +44,29 @@ class TestUtil
                 'dbname' => $GLOBALS['db_name'],
                 'port' => $GLOBALS['db_port']
             );
-            $conn = \Doctrine\DBAL\DriverManager::getConnection($params);
+            $tmpDbParams = array(
-            $conn->getSchemaManager()->dropAndCreateDatabase();
+                'driver' => $GLOBALS['tmpdb_type'],
-            $conn->close();
+                'user' => $GLOBALS['tmpdb_username'],
-            $conn->connect();
+                'password' => $GLOBALS['tmpdb_password'],
+                'host' => $GLOBALS['tmpdb_host'],
+                'dbname' => $GLOBALS['tmpdb_name'],
+                'port' => $GLOBALS['tmpdb_port']
+            );
+            
+            // Connect to tmpdb in order to drop and create the real test db.
+            $tmpConn = \Doctrine\DBAL\DriverManager::getConnection($tmpDbParams);
+            $realConn = \Doctrine\DBAL\DriverManager::getConnection($realDbParams);
+            
+            $dbname = $realConn->getDatabase();
+            $realConn->close();
+            
+            $tmpConn->getSchemaManager()->dropDatabase($dbname);
+            $tmpConn->getSchemaManager()->createDatabase($dbname);
+            
+            $tmpConn->close();
+            
+            $conn = \Doctrine\DBAL\DriverManager::getConnection($realDbParams);
+            
         } else {
             $params = array(
                 'driver' => 'pdo_sqlite',

tests/dbproperties.xml.dev

@@ -13,11 +13,20 @@
 -->
 <phpunit>
   <php>
+    <!-- "Real" test database -->
     <var name="db_type" value="pdo_mysql"/>
     <var name="db_host" value="localhost" />
     <var name="db_username" value="root" />
     <var name="db_password" value="" />
     <var name="db_name" value="doctrine_tests" />
     <var name="db_port" value="3306"/>
+    
+    <!-- Database for temporary connections (i.e. to drop/create the main database) -->
+    <var name="tmpdb_type" value="pdo_mysql"/>
+    <var name="tmpdb_host" value="localhost" />
+    <var name="tmpdb_username" value="root" />
+    <var name="tmpdb_password" value="" />
+    <var name="tmpdb_name" value="doctrine_tests_tmp" />
+    <var name="tmpdb_port" value="3306"/>
   </php>
 </phpunit>