我正在研究 ANTLR-Parser，現(xiàn)在正在為解析器編寫測(cè)試。我已經(jīng)找到了一種“肯定”的方法——測(cè)試解析器，但現(xiàn)在還想測(cè)試解析器在輸入錯(cuò)誤時(shí)也會(huì)失?。ǚ穸y(cè)試？）。我想要的是一種使用 JUnits 的方法Assertions.assertThrows()，例如NoViableAltException解析器拋出的一個(gè)或任何其他異常。我已經(jīng)查看了ANTLRErrorListener及其實(shí)現(xiàn)，但還沒有找到解決方案。到目前為止，這是我的測(cè)試用例：@Test    public void test_short_negative() {        String[] string_values = new String[]{"{", "<EOF>"};        int[] id_values = new int[]{MyLexer.CBRACKET_OPEN, MyLexer.EOF};        ArrayList<TestToken> tokens = new ArrayList<>();        for (int i = 0; i < id_values.length; i++) tokens.add(new TestToken(string_values[i], id_values[i]));        ListTokenSource source = new ListTokenSource(tokens);        for(TestToken t: tokens) t.setTokenSource(source);        TestErrorListener errorListener = new TestErrorListener(true);        MyParser pars = createParser(new ListTokenSource(tokens), errorListener);        pars.stmt_block();    }public class TestErrorListener extends BaseErrorListener {    private boolean hadError = false;    private TestToken lastOffendingSymbol;    private boolean doPrint;    public TestErrorListener(boolean doPrint){        this.doPrint = doPrint;    }    public boolean hadError() {        return hadError;    }    public TestToken getLastOffendingSymbol() {        return lastOffendingSymbol;    }    @Override    public void syntaxError(Recognizer<?, ?> recognizer, Object offendingSymbol, int line, int charPositionInLine, String msg, RecognitionException e) {        if(doPrint) System.out.println("Syntax error at " + line + ":" + charPositionInLine + ". Symbol: '" + ((TestToken) offendingSymbol).getText() + "' could not be parsed.");        hadError = true;        lastOffendingSymbol = (TestToken) offendingSymbol;    }    @Override    public void reportAmbiguity(Parser recognizer, DFA dfa, int startIndex, int stopIndex, boolean exact, BitSet ambigAlts, ATNConfigSet configs) {        if(doPrint) System.out.println("Ambiguity found at [" + startIndex + ":" + stopIndex + "]!");    }}