public function testSetAdapter()
 {
     $lang = new Zend_Translate(Zend_Translate::AN_GETTEXT, dirname(__FILE__) . '/Translate/_files/testmsg_en.mo', 'en');
     $lang->setAdapter(Zend_Translate::AN_ARRAY, array());
     $this->assertTrue($lang->getAdapter() instanceof Zend_Translate_Adapter_Array);
     try {
         $lang->xxxFunction();
         $this->fail("exception expected");
     } catch (Zend_Translate_Exception $e) {
         // success
     }
 }