我已经学习了一点Java,所以请告知在这种情况下异常抛出测试应该是什么样子?我有以下赌博机课程。然后对其进行 2 次测试。我真的不知道第二种方法(shouldThrowWhenNumbersOutOfRange)中的“整数”应该遵循什么。您能否告知确切的语法?
public class GamblingMachine {
public int howManyWins(Set<Integer> userNumbers) throws InvalidNumbersException {
validateNumbers(userNumbers);
Set<Integer> computerNumbers = generateComputerNumbers();
int count = 0;
for (Integer number : userNumbers) {
if (computerNumbers.contains(number)) {
count++;
}
}
return count;
}
private void validateNumbers(Set<Integer> numbers) throws InvalidNumbersException {
if (numbers.size() != 6) {
throw new InvalidNumbersException();
}
if (numbers.stream().anyMatch(number -> number < 1 || number > 49)) { //anyMatch-function to check whether any element in list satisfy given condition
throw new InvalidNumbersException();
}
}
private Set<Integer> generateComputerNumbers() {
Set<Integer> numbers = new HashSet<>();
Random generator = new Random();
while(numbers.size() < 6) {
numbers.add(generator.nextInt(49) + 1);
}
return numbers;
}
}
private GamblingMachine machine = new GamblingMachine();
@ParameterizedTest
@NullAndEmptySource
public void shouldThrowWhenNumbersEmpty(Set<Integer> numbers) throws InvalidNumbersException {
Assertions.assertThrows(NumberFormatException.class, () -> {
Integer.parseInt(" ");
});
}
@ParameterizedTest
@CsvFileSource(resources ="/numbersOutOfRange.cvs", numLinesToSkip = 1)
public void shouldThrowWhenNumbersOutOfRange(Set<Integer> numbers) throws InvalidNumbersException {
Assertions.assertThrows(NumberFormatException.class, () -> {
Integer. //how code should look like here?
});
}