public function testWrongReaderClass2()
 {
     try {
         ezcDbSchemaHandlerManager::addReader('dummy', 'stdClass');
         self::fail("Expected exception not thrown");
     } catch (ezcDbSchemaInvalidReaderClassException $e) {
         $this->assertEquals("Class 'stdClass' does not exist, or does not implement the 'ezcDbSchemaReader' interface.", $e->getMessage());
     }
 }