У меня есть несколько тестов с фиктивной службой, которые вызывают одну и ту же функцию и в каждом тесте должны выдавать разные ошибки, чтобы симулировать разные проблемы. Я не понимаю, почему один тест работает нормально, и генерируется исключение, но в идентичном тесте генерируется исключение NullPointerException.
class UserMutationTest {
private UserService mockUserService;
private UserMutation userMutation;
@BeforeEach
void setup() {
mockUserService = Mockito.mock(UserService.class);
userMutation = new UserMutation(mockUserService);
}
//This test works perfectly fine, DataAccessresourceFailureException is thrown and caugh
//and then a BaseGraphQLException is thrown which is exactly what's expected
@Test
void loginDatabaseUnavailable(){
when(mockUserService.login(anyString(), anyString())).thenThrow(DataAccessResourceFailureException.class);
assertThrows(BaseGraphQLException.class, () -> userMutation.login(anyString(), anyString()));
}
//This test which is a copy/paste of the above test except for instead it's supposed
//to throw InvalidInputException, but when called it actually throws NullPointerException.
@Test
void loginInvalidCredentials(){
when(mockUserService.login(anyString(), anyString())).thenThrow(InvalidInputException.class);
assertThrows(InvalidInputException.class, () -> userMutation.login(anyString(), anyString()));
}
}
public class UserMutation implements GraphQLMutationResolver {
private final UserService userService;
@Autowired
public UserMutation(UserService userService) {
this.userService = userService;
}
public User login(String username, String password){
try {
User u = userService.login(username, password);
return u;
} catch (DataAccessResourceFailureException e) {
//Database Unavailable
log.debug(e.toString());
BaseGraphQLException ex = new BaseGraphQLException("Database Unavailable");
ex.addExtension("Database", "Unavailable");
throw ex;
} catch (InvalidInputException e) {
throw e;
}
//If I add a catch for NullPointException here it is actually caught, which makes no sense to me.
}
}
Код для InvalidInputException
package com.band.api.exceptions;
public class InvalidInputException extends BaseGraphQLException {
public InvalidInputException(String message) {
super(message);
}
}
Полная трассировка стека
org.opentest4j.AssertionFailedError: Unexpected exception type thrown ==> expected: <com.band.api.exceptions.InvalidInputException> but was: <java.lang.NullPointerException>
at org.junit.jupiter.api.AssertThrows.assertThrows(AssertThrows.java:65)
at org.junit.jupiter.api.AssertThrows.assertThrows(AssertThrows.java:37)
at org.junit.jupiter.api.Assertions.assertThrows(Assertions.java:2920)
at com.band.api.UserMutationTest.loginInvalidCredentials(UserMutationTest.java:87)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:532)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:171)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:167)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:114)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:59)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$4(NodeTestTask.java:108)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:98)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:74)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$4(NodeTestTask.java:112)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:98)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:74)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$4(NodeTestTask.java:112)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:98)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:74)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:188)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:69)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.lang.NullPointerException
at org.mockito.internal.exceptions.stacktrace.StackTraceFilter.filter(StackTraceFilter.java:32)
at org.mockito.internal.exceptions.stacktrace.ConditionalStackTraceFilter.filter(ConditionalStackTraceFilter.java:23)
at org.mockito.internal.stubbing.answers.ThrowsException.answer(ThrowsException.java:49)
at org.mockito.internal.stubbing.StubbedInvocationMatcher.answer(StubbedInvocationMatcher.java:39)
at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:96)
at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29)
at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:35)
at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor.doIntercept(MockMethodInterceptor.java:63)
at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor.doIntercept(MockMethodInterceptor.java:49)
at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor$DispatcherDefaultingToRealMethod.interceptSuperCallable(MockMethodInterceptor.java:110)
at com.band.api.services.UserService$MockitoMock$583046591.login(Unknown Source)
at com.band.api.resolvers.UserMutation.login(UserMutation.java:51)
at com.band.api.UserMutationTest.lambda$loginInvalidCredentials$3(UserMutationTest.java:87)
at org.junit.jupiter.api.AssertThrows.assertThrows(AssertThrows.java:55)
... 42 more
Process finished with exit code -1
Я не понимаю, почему один тест выдает правильное определенное исключение, а другой выдает исключение NullPointerException. Если бы они оба бросили NullPointer, тогда мне было бы куда искать, но они этого не делают.
Любая помощь будет принята с благодарностью.