public function testList()
 {
     $adapter = new Zend_Translate_Adapter_Gettext(dirname(__FILE__) . '/_files/testmsg_en.mo', 'en');
     $this->assertEquals($adapter->getList(), array('en' => 'en'));
     $adapter->addTranslation(dirname(__FILE__) . '/_files/testmsg_en.mo', 'de');
     $this->assertEquals($adapter->getList(), array('en' => 'en', 'de' => 'de'));
     $this->assertTrue($adapter->isAvailable('de'));
     $locale = new Zend_Locale('en');
     $this->assertTrue($adapter->isAvailable($locale));
     $this->assertFalse($adapter->isAvailable('sr'));
 }