Source

						public function testWriteMessageCompilesPo() {
		$data = array(
			'singular 1' => array(
				'id' => 'singular 1',
				'ids' => array('singular' => 'singular 1', 'plural' => null),
				'flags' => array(),
				'translated' => array('translated 1'),
				'occurrences' => array(),
				'comments' => array()
			)
		);
		$this->adapter->write('message', 'de', null, $data);
		$this->assertTrue(file_exists("{$this->_path}/de/LC_MESSAGES/default.po"));
	}