Checks the translation of a string.
string $source: Translation source string
string $translation: Translation to check. Use empty string to check for a not existing translation.
string $langcode: Language code of the language to translate to.
string $message: (optional) A message to display with the assertion.
function assertTranslation($source, $translation, $langcode, $message = '') {
$db_translation = db_query('SELECT translation FROM {locales_target} lt INNER JOIN {locales_source} ls ON ls.lid = lt.lid WHERE ls.source = :source AND lt.language = :langcode', array(
':source' => $source,
':langcode' => $langcode,
))
->fetchField();
$db_translation = $db_translation == FALSE ? '' : $db_translation;
$this
->assertEqual($translation, $db_translation, $message ? $message : format_string('Correct translation of %source (%language)', array(
'%source' => $source,
'%language' => $langcode,
)));
}