@Test public void dropsDuplicateAttributesInFormElement() {
        String html = "<form One=One ONE=Two Two=two one=Three One=Four two=Five></form>";
        Parser parser = Parser.htmlParser().setTrackErrors(10);
        Document doc = parser.parseInput(html, "");

        Element p = doc.selectFirst("form");
        assertEquals("<form one=\"One\" two=\"two\"></form>", p.outerHtml()); // normalized names due to lower casing

        assertEquals(1, parser.getErrors().size());
        assertEquals("Dropped duplicate attribute(s) in tag [form]", parser.getErrors().get(0).getErrorMessage());
    }