@Test
public void shouldReadTheLanguageFieldOfASingleEntry() throws IOException, ParseException {

    BibTeXDatabase db = loadUnixDatabase();
    BibTeXEntry e = db.resolveEntry(new Key("Bach:1986:UTS"));
    BibTeXConverter conv = new BibTeXConverter();
    CSLItemData cid = conv.toItemData(e);
    assertEquals("Bach:1986:UTS", cid.getId());
    assertEquals("German", cid.getLanguage());
}