[英]how to verify void method in junit
Im pretty new with the tests.我对测试很陌生。 Just because it looks like Ive got issues with mock I decided to ask you guys for help.
只是因为看起来我在模拟方面遇到了问题,所以我决定向你们寻求帮助。 Can you tell how correctly tests for those methods should looks like, please?
你能说出这些方法的正确测试应该是什么样子吗? This is what ive got:
这就是我得到的:
class for test: class 用于测试:
public class EnhancedJwtCache extends TimerTask { ConcurrentHashMap<String, EJwt> cache = new ConcurrentHashMap<>();公共 class EnhancedJwtCache 扩展 TimerTask { ConcurrentHashMap<String, EJwt> cache = new ConcurrentHashMap<>();
public void init() {
new Timer().scheduleAtFixedRate(this, TimeUnit.MINUTES.toMillis(1), TimeUnit.MINUTES.toMillis(1));
}
@Override
public void run() {
log.debug("Checking enhanced token cache for expired entries.");
// Remove any eJWT's from the cache that have expired.
Iterator<String> iterator = cache.keySet().iterator();
while (iterator.hasNext()) {
String key = iterator.next();
if (cache.get(key).isExpired()) {
log.debug("Removing expired token from cache for user {}", cache.get(key).getUsername());
iterator.remove();
}
}
}
} }
and my test so far which returns me error because its not mock:到目前为止,我的测试返回了错误,因为它不是模拟的:
class EnhancedJwtCacheTest {
ConcurrentHashMap<String, EJwtAuthenticationToken.EJwt> cache;
@Mock
EnhancedJwtCache underTest;
EJwtAuthenticationToken.EJwt ejwt;
@BeforeEach
void setUp() {
MockitoAnnotations.openMocks(this);
}
@Test
void runTest(){
List<String> roles= Arrays.asList("Roles1");
ejwt = new EJwtAuthenticationToken.EJwt(
"encodedJwt",
Instant.now().plus(10, ChronoUnit.DAYS),
"name",
"username",
roles
);
cache = new ConcurrentHashMap<>();
cache.put("cache", ejwt);
verify(underTest,times(1)).run();
You don't want to mock the class that you're testing in the test.您不想模拟您在测试中测试的 class。 Then you would be testing the mock, not the class.
然后您将测试模拟,而不是 class。
To test a void
method, it needs to have some observable side-effect that you can verify in the test.要测试
void
方法,它需要有一些可以在测试中验证的可观察到的副作用。 In this case, you'd want the test to add a mix of expired and non-expired entries to the cache, then call run
, then check the list of cache entries again to be sure the expired ones are absent and the non-expired ones are present.在这种情况下,您希望测试将过期和未过期条目的混合添加到缓存中,然后调用
run
,然后再次检查缓存条目列表以确保过期条目不存在且未过期有的。
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