diff --git a/lib/Doctrine/Common/Collections/Collection.php b/lib/Doctrine/Common/Collections/Collection.php
index 4ee8dc25b..91321e1b6 100644
--- a/lib/Doctrine/Common/Collections/Collection.php
+++ b/lib/Doctrine/Common/Collections/Collection.php
@@ -127,22 +127,6 @@ class Collection implements Countable, IteratorAggregate, ArrayAccess
         return null;
     }
 
-    /**
-     * @see containsKey()
-     */
-    public function __isset($key)
-    {
-        return $this->containsKey($key);
-    }
-
-    /**
-     * @see remove()
-     */
-    public function __unset($key)
-    {
-        return $this->remove($key);
-    }
-
     /* ArrayAccess implementation */
 
     /**
diff --git a/lib/Doctrine/Common/DoctrineException.php b/lib/Doctrine/Common/DoctrineException.php
index e15121e3d..97a00ae75 100644
--- a/lib/Doctrine/Common/DoctrineException.php
+++ b/lib/Doctrine/Common/DoctrineException.php
@@ -29,8 +29,9 @@ class DoctrineException extends \Exception
         $messageKey = substr($class, strrpos($class, '\\') + 1) . "#$method";
 
         $end = end($arguments);
+        $innerException = null;
         if ($end instanceof \Exception) {
-            $this->_innerException = $end;
+            $innerException = $end;
             unset($arguments[count($arguments) - 1]);
         }
 
@@ -46,7 +47,7 @@ class DoctrineException extends \Exception
             $message .= ' (' . implode(', ', $args) . ')';
         }
         
-        return new $class($message);
+        return new $class($message, $innerException);
     }
 
     public static function getExceptionMessage($messageKey)
diff --git a/lib/Doctrine/Common/EventManager.php b/lib/Doctrine/Common/EventManager.php
index 80dbbcd3c..7a13957c8 100644
--- a/lib/Doctrine/Common/EventManager.php
+++ b/lib/Doctrine/Common/EventManager.php
@@ -80,7 +80,7 @@ class EventManager
      */
     public function hasListeners($event)
     {
-        return isset($this->_listeners[$event]);
+        return isset($this->_listeners[$event]) && ! empty($this->_listeners[$event]);
     }
 
     /**
@@ -106,7 +106,7 @@ class EventManager
     public function removeEventListener($events, $listener)
     {
         foreach ((array)$events as $event) {
-            if ($key = array_search($listener, $this->_listeners[$event], true)) {
+            if (($key = array_search($listener, $this->_listeners[$event], true)) !== false) {
                 unset($this->_listeners[$event][$key]);
             }
         }
diff --git a/lib/Doctrine/DBAL/Connection.php b/lib/Doctrine/DBAL/Connection.php
index 1d7208506..e3b01d438 100644
--- a/lib/Doctrine/DBAL/Connection.php
+++ b/lib/Doctrine/DBAL/Connection.php
@@ -202,7 +202,7 @@ class Connection
      */
     public function getHost()
     {
-        return $this->_params['host'];
+        return isset($this->_params['host']) ? $this->_params['host'] : null;
     }
     
     /**
@@ -212,7 +212,7 @@ class Connection
      */
     public function getPort()
     {
-        return $this->_params['port'];
+        return isset($this->_params['port']) ? $this->_params['port'] : null;
     }
     
     /**
@@ -222,7 +222,7 @@ class Connection
      */
     public function getUsername()
     {
-        return $this->_params['user'];
+        return isset($this->_params['user']) ? $this->_params['user'] : null;
     }
     
     /**
@@ -232,7 +232,7 @@ class Connection
      */
     public function getPassword()
     {
-        return $this->_params['password'];
+        return isset($this->_params['password']) ? $this->_params['password'] : null;
     }
 
     /**
diff --git a/lib/Doctrine/DBAL/DriverManager.php b/lib/Doctrine/DBAL/DriverManager.php
index 105241ae0..fe07ba526 100644
--- a/lib/Doctrine/DBAL/DriverManager.php
+++ b/lib/Doctrine/DBAL/DriverManager.php
@@ -48,7 +48,10 @@ final class DriverManager
             );
 
     /** Private constructor. This class cannot be instantiated. */
-    private function __construct() {}
+    public function __construct()
+    {
+        throw \Doctrine\Common\DoctrineException::driverManagerCannotBeInstantiated();
+    }
 
     /**
      * Creates a connection object based on the specified parameters.
@@ -109,9 +112,9 @@ final class DriverManager
         
         // check for existing pdo object
         if (isset($params['pdo']) && ! $params['pdo'] instanceof \PDO) {
-            throw DoctrineException::invalidPDOInstance();
+            throw DoctrineException::invalidPdoInstance();
         } else if (isset($params['pdo'])) {
-            $params['driver'] = $params['pdo']->getAttribute(\PDO::ATTR_DRIVER_NAME);
+            $params['driver'] = 'pdo_' . $params['pdo']->getAttribute(\PDO::ATTR_DRIVER_NAME);
         } else {
             self::_checkParams($params);
         }
diff --git a/tests/Doctrine/Tests/Common/AllTests.php b/tests/Doctrine/Tests/Common/AllTests.php
index 27b3a3b75..e78183d71 100644
--- a/tests/Doctrine/Tests/Common/AllTests.php
+++ b/tests/Doctrine/Tests/Common/AllTests.php
@@ -4,6 +4,7 @@ namespace Doctrine\Tests\Common;
 
 use Doctrine\Tests\Common\Collections;
 use Doctrine\Tests\Common\Annotations;
+use Doctrine\Tests\Common\Cache;
 
 if (!defined('PHPUnit_MAIN_METHOD')) {
     define('PHPUnit_MAIN_METHOD', 'Common_AllTests::main');
@@ -28,6 +29,7 @@ class AllTests
 
         $suite->addTest(Collections\AllTests::suite());
         $suite->addTest(Annotations\AllTests::suite());
+        $suite->addTest(Cache\AllTests::suite());
 
         return $suite;
     }
diff --git a/tests/Doctrine/Tests/Common/Annotations/AnnotationReaderTest.php b/tests/Doctrine/Tests/Common/Annotations/AnnotationReaderTest.php
index 078394b08..8973f9183 100644
--- a/tests/Doctrine/Tests/Common/Annotations/AnnotationReaderTest.php
+++ b/tests/Doctrine/Tests/Common/Annotations/AnnotationReaderTest.php
@@ -46,6 +46,16 @@ class AnnotationReaderTest extends \Doctrine\Tests\DoctrineTestCase
         $this->assertEquals('col2', $joinTableAnnot->joinColumns[0]->referencedColumnName);
         $this->assertEquals('col3', $joinTableAnnot->inverseJoinColumns[0]->name);
         $this->assertEquals('col4', $joinTableAnnot->inverseJoinColumns[0]->referencedColumnName);
+
+        $dummyAnnot = $reader->getMethodAnnotation($class->getMethod('getField1'), 'Doctrine\Tests\Common\Annotations\DummyAnnotation');
+        $this->assertEquals('', $dummyAnnot->dummyValue);
+        $this->assertEquals(array(1, 2, 'three'), $dummyAnnot->value);
+
+        $dummyAnnot = $reader->getPropertyAnnotation($class->getProperty('field1'), 'Doctrine\Tests\Common\Annotations\DummyAnnotation');
+        $this->assertEquals('fieldHello', $dummyAnnot->dummyValue);
+
+        $classAnnot = $reader->getClassAnnotation($class, 'Doctrine\Tests\Common\Annotations\DummyAnnotation');
+        $this->assertEquals('hello', $classAnnot->dummyValue);
     }
 }
 
diff --git a/tests/Doctrine/Tests/Common/Cache/AllTests.php b/tests/Doctrine/Tests/Common/Cache/AllTests.php
new file mode 100644
index 000000000..374ba9b06
--- /dev/null
+++ b/tests/Doctrine/Tests/Common/Cache/AllTests.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Doctrine\Tests\Common\Cache;
+
+if (!defined('PHPUnit_MAIN_METHOD')) {
+    define('PHPUnit_MAIN_METHOD', 'Common_Cache_AllTests::main');
+}
+
+require_once __DIR__ . '/../../TestInit.php';
+
+class AllTests
+{
+    public static function main()
+    {
+        \PHPUnit_TextUI_TestRunner::run(self::suite());
+    }
+
+    public static function suite()
+    {
+        $suite = new \Doctrine\Tests\DoctrineTestSuite('Doctrine Common Cache Tests');
+
+        $suite->addTestSuite('Doctrine\Tests\Common\Cache\ApcCacheTest');
+        $suite->addTestSuite('Doctrine\Tests\Common\Cache\ArrayCacheTest');
+        $suite->addTestSuite('Doctrine\Tests\Common\Cache\MemcacheCacheTest');
+        $suite->addTestSuite('Doctrine\Tests\Common\Cache\XcacheCacheTest');
+
+        return $suite;
+    }
+}
+
+if (PHPUnit_MAIN_METHOD == 'Common_Cache_AllTests::main') {
+    AllTests::main();
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Common/Cache/ApcCacheTest.php b/tests/Doctrine/Tests/Common/Cache/ApcCacheTest.php
new file mode 100644
index 000000000..efd8470bc
--- /dev/null
+++ b/tests/Doctrine/Tests/Common/Cache/ApcCacheTest.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace Doctrine\Tests\Common\Cache;
+
+use Doctrine\Common\Cache\ApcCache;
+
+require_once __DIR__ . '/../../TestInit.php';
+
+class ApcCacheTest extends \Doctrine\Tests\DoctrineTestCase
+{
+    public function setUp()
+    {
+        if ( ! extension_loaded('apc')) {
+            $this->markTestSkipped('The ' . __CLASS__ .' requires the use of APC');
+        }
+    }
+
+    public function testApcCacheDriver()
+    {
+        $cache = new ApcCache();
+
+        // Test save
+        $cache->save('test_key', 'testing this out');
+
+        // Test contains to test that save() worked
+        $this->assertTrue($cache->contains('test_key'));
+
+        // Test fetch
+        $this->assertEquals('testing this out', $cache->fetch('test_key'));
+
+        // Test count
+        $this->assertEquals(1, $cache->count());
+
+        // Test delete
+        $cache->save('test_key2', 'test2');
+        $cache->delete('test_key2');
+        $this->assertFalse($cache->contains('test_key2'));
+
+        // Test delete all
+        $cache->deleteAll();
+        $this->assertEquals(0, $cache->count());
+    }
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Common/Cache/ArrayCacheTest.php b/tests/Doctrine/Tests/Common/Cache/ArrayCacheTest.php
new file mode 100644
index 000000000..af84e160f
--- /dev/null
+++ b/tests/Doctrine/Tests/Common/Cache/ArrayCacheTest.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Doctrine\Tests\Common\Cache;
+
+use Doctrine\Common\Cache\ArrayCache;
+
+require_once __DIR__ . '/../../TestInit.php';
+
+class ArrayCacheTest extends \Doctrine\Tests\DoctrineTestCase
+{
+    public function testArrayCacheDriver()
+    {
+        $cache = new ArrayCache();
+
+        // Test save
+        $cache->save('test_key', 'testing this out');
+
+        // Test contains to test that save() worked
+        $this->assertTrue($cache->contains('test_key'));
+
+        // Test fetch
+        $this->assertEquals('testing this out', $cache->fetch('test_key'));
+
+        // Test count
+        $this->assertEquals(1, $cache->count());
+
+        // Test delete
+        $cache->save('test_key2', 'test2');
+        $cache->delete('test_key2');
+        $this->assertFalse($cache->contains('test_key2'));
+
+        // Test delete all
+        $cache->deleteAll();
+        $this->assertEquals(0, $cache->count());
+    }
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Common/Cache/MemcacheCacheTest.php b/tests/Doctrine/Tests/Common/Cache/MemcacheCacheTest.php
new file mode 100644
index 000000000..c1e78ea36
--- /dev/null
+++ b/tests/Doctrine/Tests/Common/Cache/MemcacheCacheTest.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace Doctrine\Tests\Common\Cache;
+
+use Doctrine\Common\Cache\MemcacheCache;
+
+require_once __DIR__ . '/../../TestInit.php';
+
+class MemcacheCacheTest extends \Doctrine\Tests\DoctrineTestCase
+{
+    public function setUp()
+    {
+        if ( ! extension_loaded('memcache')) {
+            $this->markTestSkipped('The ' . __CLASS__ .' requires the use of memcache');
+        }
+    }
+
+    public function testMemcacheCacheDriver()
+    {
+        $cache = new MemcacheCache();
+
+        // Test save
+        $cache->save('test_key', 'testing this out');
+
+        // Test contains to test that save() worked
+        $this->assertTrue($cache->contains('test_key'));
+
+        // Test fetch
+        $this->assertEquals('testing this out', $cache->fetch('test_key'));
+
+        // Test count
+        $this->assertEquals(1, $cache->count());
+
+        // Test delete
+        $cache->save('test_key2', 'test2');
+        $cache->delete('test_key2');
+        $this->assertFalse($cache->contains('test_key2'));
+
+        // Test delete all
+        $cache->deleteAll();
+        $this->assertEquals(0, $cache->count());
+    }
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Common/Cache/XcacheCacheTest.php b/tests/Doctrine/Tests/Common/Cache/XcacheCacheTest.php
new file mode 100644
index 000000000..1a0b983cb
--- /dev/null
+++ b/tests/Doctrine/Tests/Common/Cache/XcacheCacheTest.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace Doctrine\Tests\Common\Cache;
+
+use Doctrine\Common\Cache\XcacheCache;
+
+require_once __DIR__ . '/../../TestInit.php';
+
+class XcacheCacheTest extends \Doctrine\Tests\DoctrineTestCase
+{
+    public function setUp()
+    {
+        if ( ! extension_loaded('xcache')) {
+            $this->markTestSkipped('The ' . __CLASS__ .' requires the use of xcache');
+        }
+    }
+
+    public function testXcacheCacheDriver()
+    {
+        $cache = new XcacheCache();
+
+        // Test save
+        $cache->save('test_key', 'testing this out');
+
+        // Test contains to test that save() worked
+        $this->assertTrue($cache->contains('test_key'));
+
+        // Test fetch
+        $this->assertEquals('testing this out', $cache->fetch('test_key'));
+
+        // Test count
+        $this->assertEquals(1, $cache->count());
+
+        // Test delete
+        $cache->save('test_key2', 'test2');
+        $cache->delete('test_key2');
+        $this->assertFalse($cache->contains('test_key2'));
+
+        // Test delete all
+        $cache->deleteAll();
+        $this->assertEquals(0, $cache->count());
+    }
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Common/ClassLoaderTest.php b/tests/Doctrine/Tests/Common/ClassLoaderTest.php
index 7ac1d4182..2b659d99c 100644
--- a/tests/Doctrine/Tests/Common/ClassLoaderTest.php
+++ b/tests/Doctrine/Tests/Common/ClassLoaderTest.php
@@ -28,4 +28,16 @@ class ClassLoaderTest extends \Doctrine\Tests\DoctrineTestCase
         // This would return a fatal error without check file exists true
         $this->assertEquals($classLoader->loadClass('SomeInvalidClass'), false);
     }
+
+    public function testAlreadyLoadedClassReturnsFalse()
+    {
+        $classLoader = new \Doctrine\Common\ClassLoader();
+        $classLoader->setBasePath('ClassLoaderTest', __DIR__);
+        $classLoader->setClassFileExtension('.class.php');
+        $classLoader->setNamespaceSeparator('_');
+        $classLoader->setCheckFileExists(true);
+
+        $this->assertEquals($classLoader->loadClass('ClassLoaderTest_ClassA'), false);
+        $this->assertEquals($classLoader->loadClass('ClassLoaderTest_ClassC'), true);
+    }
 }
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Common/ClassLoaderTest/ClassC.class.php b/tests/Doctrine/Tests/Common/ClassLoaderTest/ClassC.class.php
new file mode 100644
index 000000000..d2e33efe4
--- /dev/null
+++ b/tests/Doctrine/Tests/Common/ClassLoaderTest/ClassC.class.php
@@ -0,0 +1,6 @@
+<?php
+
+class ClassLoaderTest_ClassC
+{
+    
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Common/Collections/CollectionTest.php b/tests/Doctrine/Tests/Common/Collections/CollectionTest.php
index 0af97e964..c6049e007 100644
--- a/tests/Doctrine/Tests/Common/Collections/CollectionTest.php
+++ b/tests/Doctrine/Tests/Common/Collections/CollectionTest.php
@@ -15,6 +15,26 @@ class CollectionTest extends \Doctrine\Tests\DoctrineTestCase
         $this->_coll = new \Doctrine\Common\Collections\Collection;
     }
 
+    public function testIssetAndUnset()
+    {
+        $this->assertFalse(isset($this->_coll[0]));
+        $this->_coll->add('testing');
+        $this->assertTrue(isset($this->_coll[0]));
+        unset($this->_coll[0]);
+        $this->assertFalse(isset($this->_coll[0]));
+    }
+
+    public function testToString()
+    {
+        $this->_coll->add('testing');
+        $this->assertTrue(is_string((string) $this->_coll));
+    }
+
+    public function testRemovingNonExistentEntryReturnsNull()
+    {
+        $this->assertEquals(null, $this->_coll->remove('testing_does_not_exist'));
+    }
+
     public function testExists()
     {
         $this->_coll->add("one");
diff --git a/tests/Doctrine/Tests/Common/DoctrineExceptionTest.php b/tests/Doctrine/Tests/Common/DoctrineExceptionTest.php
index bfaaab550..225b91ed4 100644
--- a/tests/Doctrine/Tests/Common/DoctrineExceptionTest.php
+++ b/tests/Doctrine/Tests/Common/DoctrineExceptionTest.php
@@ -12,4 +12,28 @@ class DoctrineExceptionTest extends \Doctrine\Tests\DoctrineTestCase
 
         $this->assertEquals($e->getMessage(), "Testing static call builds error message with params ('param1', 'param2')");
     }
+
+    public function testInnerException()
+    {
+        $e1 = \Doctrine\Common\DoctrineException::testException();
+        $e2 = \Doctrine\Common\DoctrineException::testException2('param1', $e1);
+        $this->assertEquals($e1, $e2->getInnerException());
+    }
+
+    public function testNotImplemented()
+    {
+        $e = \Doctrine\Common\DoctrineException::notImplemented('testMethod', 'SomeClass');
+        $this->assertEquals("The method 'testMethod' is not implemented in class 'SomeClass'.", $e->getMessage());
+    }
+
+    public function testGetExceptionMessage()
+    {
+        $this->assertEquals('The query contains more than one result.', \Doctrine\Common\DoctrineException::getExceptionMessage('QueryException#nonUniqueResult'));
+    }
+
+    public function testUseGetExceptionMessage()
+    {
+        $q = \Doctrine\ORM\Query\QueryException::nonUniqueResult();
+        $this->assertEquals('The query contains more than one result.', $q->getMessage());
+    }
 }
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Common/EventManagerTest.php b/tests/Doctrine/Tests/Common/EventManagerTest.php
index 38e492dfb..1106eeee5 100644
--- a/tests/Doctrine/Tests/Common/EventManagerTest.php
+++ b/tests/Doctrine/Tests/Common/EventManagerTest.php
@@ -12,6 +12,8 @@ class EventManagerTest extends \Doctrine\Tests\DoctrineTestCase
     /* Some pseudo events */
     const preFoo = 'preFoo';
     const postFoo = 'postFoo';
+    const preBar = 'preBar';
+    const postBar = 'postBar';
 
     private $_preFooInvoked = false;
     private $_postFooInvoked = false;
@@ -50,6 +52,22 @@ class EventManagerTest extends \Doctrine\Tests\DoctrineTestCase
         $this->assertFalse($this->_postFooInvoked);
     }
 
+    public function testRemoveEventListener()
+    {
+        $this->_eventManager->addEventListener(array('preBar'), $this);
+        $this->assertTrue($this->_eventManager->hasListeners(self::preBar));
+        $this->_eventManager->removeEventListener(array('preBar'), $this);
+        $this->assertFalse($this->_eventManager->hasListeners(self::preBar));
+    }
+
+    public function testAddEventSubscriber()
+    {
+        $eventSubscriber = new TestEventSubscriber();
+        $this->_eventManager->addEventSubscriber($eventSubscriber);
+        $this->assertTrue($this->_eventManager->hasListeners(self::preFoo));
+        $this->assertTrue($this->_eventManager->hasListeners(self::postFoo));
+    }
+
     /* Listener methods */
 
     public function preFoo(EventArgs $e)
@@ -61,4 +79,12 @@ class EventManagerTest extends \Doctrine\Tests\DoctrineTestCase
     {
         $this->_postFooInvoked = true;
     }
+}
+
+class TestEventSubscriber implements \Doctrine\Common\EventSubscriber
+{
+    public function getSubscribedEvents()
+    {
+        return array('preFoo', 'postFoo');
+    }
 }
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/DBAL/AllTests.php b/tests/Doctrine/Tests/DBAL/AllTests.php
index 6192e651b..a9af256f3 100644
--- a/tests/Doctrine/Tests/DBAL/AllTests.php
+++ b/tests/Doctrine/Tests/DBAL/AllTests.php
@@ -42,6 +42,13 @@ class AllTests
         $suite->addTestSuite('Doctrine\Tests\DBAL\Types\SmallIntTest');
         $suite->addTestSuite('Doctrine\Tests\DBAL\Types\StringTest');
 
+        // Driver manager test
+        $suite->addTestSuite('Doctrine\Tests\DBAL\DriverManagerTest');
+
+        // Connection test
+        $suite->addTestSuite('Doctrine\Tests\DBAL\Connectiontest');
+
+        // All Functional DBAL tests
         $suite->addTest(Functional\AllTests::suite());
 
         return $suite;
diff --git a/tests/Doctrine/Tests/DBAL/ConnectionTest.php b/tests/Doctrine/Tests/DBAL/ConnectionTest.php
new file mode 100644
index 000000000..0daac0eeb
--- /dev/null
+++ b/tests/Doctrine/Tests/DBAL/ConnectionTest.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace Doctrine\Tests\DBAL;
+
+require_once __DIR__ . '/../TestInit.php';
+ 
+class ConnectionTest extends \Doctrine\Tests\DbalTestCase
+{
+    public function setUp()
+    {
+        $params = array(
+            'driver' => 'pdo_mysql',
+            'host' => 'localhost',
+            'user' => 'root',
+            'password' => 'password',
+            'port' => '1234'
+        );
+        $this->_conn = \Doctrine\DBAL\DriverManager::getConnection($params);
+    }
+
+    public function testGetHost()
+    {
+        $this->assertEquals('localhost', $this->_conn->getHost());
+    }
+
+    public function testGetPort()
+    {
+        $this->assertEquals('1234', $this->_conn->getPort());
+    }
+
+    public function testGetUsername()
+    {
+        $this->assertEquals('root', $this->_conn->getUsername());
+    }
+
+    public function testGetPassword()
+    {
+        $this->assertEquals('password', $this->_conn->getPassword());
+    }
+
+    public function testGetDriver()
+    {
+        $this->assertEquals('Doctrine\DBAL\Driver\PDOMySql\Driver', get_class($this->_conn->getDriver()));
+    }
+
+    public function testGetEventManager()
+    {
+        $this->assertEquals('Doctrine\Common\EventManager', get_class($this->_conn->getEventManager()));
+    }
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/DBAL/DriverManagerTest.php b/tests/Doctrine/Tests/DBAL/DriverManagerTest.php
new file mode 100644
index 000000000..de7a150df
--- /dev/null
+++ b/tests/Doctrine/Tests/DBAL/DriverManagerTest.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace Doctrine\Tests\DBAL;
+
+require_once __DIR__ . '/../TestInit.php';
+ 
+class DriverManagerTest extends \Doctrine\Tests\DbalTestCase
+{
+    /**
+     * @expectedException \Doctrine\Common\DoctrineException
+     */
+    public function testCantInstantiateDriverManager()
+    {
+        $test = new \Doctrine\DBAL\DriverManager();
+    }
+
+    /**
+     * @expectedException \Doctrine\Common\DoctrineException
+     */
+    public function testInvalidPdoInstance()
+    {
+        $options = array(
+            'pdo' => 'test'
+        );
+        $test = \Doctrine\DBAL\DriverManager::getConnection($options);
+    }
+
+    public function testValidPdoInstance()
+    {
+        $options = array(
+            'pdo' => new \PDO('sqlite::memory:')
+        );
+        $conn = \Doctrine\DBAL\DriverManager::getConnection($options);
+        $this->assertEquals('sqlite', $conn->getDatabasePlatform()->getName());
+    }
+
+    /**
+     * @expectedException \Doctrine\Common\DoctrineException
+     */
+    public function testCheckParams()
+    {
+        $conn = \Doctrine\DBAL\DriverManager::getConnection(array());
+    }
+
+    /**
+     * @expectedException \Doctrine\Common\DoctrineException
+     */
+    public function testInvalidDriver()
+    {
+        $conn = \Doctrine\DBAL\DriverManager::getConnection(array('driver' => 'invalid_driver'));
+    }
+}
\ No newline at end of file