JAVA:JUnitTest，抛出两个异常的测试方法

Question

我正在测试一种引发两个不同异常的方法。这是我的标题:

@Test (expected = A8InvalidInputException.class)

public void testGuessCharacter() throws A8InvalidInputException, A8AlreadyGuessedException
{
...
}


主体有两个 try/catch block (对 SO 的搜索导致一篇文章说这就是测试抛出异常的方法)，每个异常都有一个。在我看来，我应该将其分为两种测试方法，特别是因为我只能有一个预期属性。但是，当我这样做时，应该测试 A8InvalidInputException 的方法需要对 A8AlreadyGuessedException 进行 try/catch，而应该测试 A8AlreadyGuessedException 的方法需要对 A8InvalidInputException 进行 try/catch。我不太确定如何编写这个测试。这是我正在尝试测试的方法:

/**
 * This method returns whether a specified character exists in the keyPhrase field
 * @param guess  a character being checked for in the keyPhrase field
 * @return  returns whether a specified character exists in the keyPhrase field
 * @throws A8InvalidInputException  if a non-valid character is passed as input to this method
 * @throws A8AlreadyGuessedException  if a valid character which has already been guessed is passed as input to this method
 */
public boolean guessCharacter(char guess) throws A8InvalidInputException, A8AlreadyGuessedException
{
    if(isValidCharacter(guess))
    {
        guess = Character.toLowerCase(guess);

        if(guessedCharacters.contains(guess) )
        {
            throw new A8AlreadyGuessedException("" + guess);
        }
        else
        {
            guessedCharacters.add(guess);
            if(keyPhrase.contains("" + guess))
                return true;
            else
            {
                numberOfGuessesLeft--;
                return false;
            }
        }       
    }
    else
    {
        throw new A8InvalidInputException("" + guess);
    }
}

Answer 1

只需在 throws 子句中添加两个异常即可:

@Test (expected = A8InvalidCharacterException.class) 
public void testInvalidCharacterScenario() throws A8InvalidInputException, A8AlreadyGuessedException { ... }

@Test (expected = A8InvalidInputException.class) 
public void testInvalidInputScenario() throws A8InvalidInputException, A8AlreadyGuessedException { ... }

然后，如果一个测试抛出另一个异常(意外的异常)，那么您的测试将自动失败。