Hi all I m running into a `NullPointerException` while tryin

Question

Hi all I m running into a `NullPointerException` while trying to use programmatic declaration in a Junit5 test I have this on the test class ``` RegisterExtension static WireMockExtension wm = WireMockExtension newInstance options wireMockConfig port 31131 build ``` But calling `wm stubFor ` in a test throws a `NullPointerException` It looks like the server is starting ```2023 01 25 20 13 50 822 INFO org ecl jet uti log Test worker Logging initialized 14821ms to org eclipse jetty util log Slf4jLog 2023 01 25 20 13 51 074 INFO org ecl jet ser Server Test worker jetty 9 4 49 v20220914 built 2022 09 14T01 07 36 601Z git 4231a3b2e4cb8548a412a789936d640a97b1aa0a jvm 11 0 17+8 LTS 2023 01 25 20 13 51 093 INFO org ecl jet ser han ContextHandler Test worker Started o e j s ServletContextHandler f5b81f4 admin null AVAILABLE 2023 01 25 20 13 51 100 INFO org ecl jet ser han Con ROOT Test worker RequestHandlerClass from context returned com github tomakehurst wiremock http StubRequestHandler Normalized mapped under returned null 2023 01 25 20 13 51 101 INFO org ecl jet ser han ContextHandler Test worker Started o e j s ServletContextHandler 35c95587 null AVAILABLE 2023 01 25 20 13 51 111 INFO org ecl jet ser AbstractConnector Test worker Started NetworkTrafficServerConnector 672c4e24 HTTP 1 1 http 1 1 h2c 0 0 0 0 31131 2023 01 25 20 13 51 112 INFO org ecl jet ser Server Test worker Started 15112ms``` Is there some additional configuration that I m missing or is this a bug

Tom · Answer

Hi < Maxwell DeKock> this makes it seem the server started ```Started NetworkTrafficServerConnector 672c4e24 HTTP 1 1 http 1 1 h2c 0 0 0 0 31131 ``` Please could you share the stack trace

Maxwell DeKock · Answer

```java lang NullPointerException at com github tomakehurst wiremock junit DslWrapper stubFor DslWrapper java 261 at si cmdctrl shadowhealth service InsurancePlanServiceTest testImport stringSubstitution InsurancePlanServiceTest java 104 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 io quarkus test junit QuarkusTestExtension runExtensionMethod QuarkusTestExtension java 1099 at io quarkus test junit QuarkusTestExtension interceptTestMethod QuarkusTestExtension java 918 at org junit jupiter engine execution InterceptingExecutableInvoker$ReflectiveInterceptorCall lambda$ofVoidMethod$0 InterceptingExecutableInvoker java 103 at org junit jupiter engine execution InterceptingExecutableInvoker lambda$invoke$0 InterceptingExecutableInvoker java 93 at org junit jupiter engine execution InvocationInterceptorChain$InterceptedInvocation proceed InvocationInterceptorChain java 106 at org junit jupiter engine extension TimeoutExtension intercept TimeoutExtension java 156 at org junit jupiter engine extension TimeoutExtension interceptTestableMethod TimeoutExtension java 147 at org junit jupiter engine extension TimeoutExtension interceptTestMethod TimeoutExtension java 86 at org junit jupiter engine execution InterceptingExecutableInvoker$ReflectiveInterceptorCall lambda$ofVoidMethod$0 InterceptingExecutableInvoker java 103 at org junit jupiter engine execution InterceptingExecutableInvoker lambda$invoke$0 InterceptingExecutableInvoker java 93 at org junit jupiter engine execution InvocationInterceptorChain$InterceptedInvocation proceed InvocationInterceptorChain java 106 at org junit jupiter engine execution InvocationInterceptorChain proceed InvocationInterceptorChain java 64 at org junit jupiter engine execution InvocationInterceptorChain chainAndInvoke InvocationInterceptorChain java 45 at org junit jupiter engine execution InvocationInterceptorChain invoke InvocationInterceptorChain java 37 at org junit jupiter engine execution InterceptingExecutableInvoker invoke InterceptingExecutableInvoker java 92 at org junit jupiter engine execution InterceptingExecutableInvoker invoke InterceptingExecutableInvoker java 86 at org junit jupiter engine descriptor TestMethodTestDescriptor lambda$invokeTestMethod$7 TestMethodTestDescriptor java 217 at org junit platform engine support hierarchical ThrowableCollector execute ThrowableCollector java 73 at org junit jupiter engine descriptor TestMethodTestDescriptor invokeTestMethod TestMethodTestDescriptor java 213 at org junit jupiter engine descriptor TestMethodTestDescriptor execute TestMethodTestDescriptor java 138 at org junit jupiter engine descriptor TestMethodTestDescriptor execute TestMethodTestDescriptor java 68 at org junit platform engine support hierarchical NodeTestTask lambda$executeRecursively$6 NodeTestTask java 151 at org junit platform engine support hierarchical ThrowableCollector execute ThrowableCollector java 73 at org junit platform engine support hierarchical NodeTestTask lambda$executeRecursively$8 NodeTestTask java 141 at org junit platform engine support hierarchical Node around Node java 137 at org junit platform engine support hierarchical NodeTestTask lambda$executeRecursively$9 NodeTestTask java 139 at org junit platform engine support hierarchical ThrowableCollector execute ThrowableCollector java 73 at org junit platform engine support hierarchical NodeTestTask executeRecursively NodeTestTask java 138 at org junit platform engine support hierarchical NodeTestTask execute NodeTestTask java 95 at java base java util ArrayList forEach ArrayList java 1541 at org junit platform engine support hierarchical SameThreadHierarchicalTestExecutorService invokeAll SameThreadHierarchicalTestExecutorService java 41 at org junit platform engine support hierarchical NodeTestTask lambda$executeRecursively$6 NodeTestTask java 155 at org junit platform engine support hierarchical ThrowableCollector execute ThrowableCollector java 73 at org junit platform engine support hierarchical NodeTestTask lambda$executeRecursively$8 NodeTestTask java 141 at org junit platform engine support hierarchical Node around Node java 137 at org junit platform engine support hierarchical NodeTestTask lambda$executeRecursively$9 NodeTestTask java 139 at org junit platform engine support hierarchical ThrowableCollector execute ThrowableCollector java 73 at org junit platform engine support hierarchical NodeTestTask executeRecursively NodeTestTask java 138 at org junit platform engine support hierarchical NodeTestTask execute NodeTestTask java 95 at java base java util ArrayList forEach ArrayList java 1541 at org junit platform engine support hierarchical SameThreadHierarchicalTestExecutorService invokeAll SameThreadHierarchicalTestExecutorService java 41 at org junit platform engine support hierarchical NodeTestTask lambda$executeRecursively$6 NodeTestTask java 155 at org junit platform engine support hierarchical ThrowableCollector execute ThrowableCollector java 73 at org junit platform engine support hierarchical NodeTestTask lambda$executeRecursively$8 NodeTestTask java 141 at org junit platform engine support hierarchical Node around Node java 137 at org junit platform engine support hierarchical NodeTestTask lambda$executeRecursively$9 NodeTestTask java 139 at org junit platform engine support hierarchical ThrowableCollector execute ThrowableCollector java 73 at org junit platform engine support hierarchical NodeTestTask executeRecursively NodeTestTask java 138 at org junit platform engine support hierarchical NodeTestTask execute NodeTestTask java 95 at org junit platform engine support hierarchical SameThreadHierarchicalTestExecutorService submit SameThreadHierarchicalTestExecutorService java 35 at org junit platform engine support hierarchical HierarchicalTestExecutor execute HierarchicalTestExecutor java 57 at org junit platform engine support hierarchical HierarchicalTestEngine execute HierarchicalTestEngine java 54 at org junit platform launcher core EngineExecutionOrchestrator execute EngineExecutionOrchestrator java 147 at org junit platform launcher core EngineExecutionOrchestrator execute EngineExecutionOrchestrator java 127 at org junit platform launcher core EngineExecutionOrchestrator execute EngineExecutionOrchestrator java 90 at org junit platform launcher core EngineExecutionOrchestrator lambda$execute$0 EngineExecutionOrchestrator java 55 at org junit platform launcher core EngineExecutionOrchestrator withInterceptedStreams EngineExecutionOrchestrator java 102 at org junit platform launcher core EngineExecutionOrchestrator execute EngineExecutionOrchestrator java 54 at org junit platform launcher core DefaultLauncher execute DefaultLauncher java 114 at org junit platform launcher core DefaultLauncher execute DefaultLauncher java 86 at org junit platform launcher core DefaultLauncherSession$DelegatingLauncher execute DefaultLauncherSession java 86 at org junit platform launcher core SessionPerRequestLauncher execute SessionPerRequestLauncher java 53 at org gradle api internal tasks testing junitplatform JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor processAllTestClasses JUnitPlatformTestClassProcessor java 99 at org gradle api internal tasks testing junitplatform JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor access$000 JUnitPlatformTestClassProcessor java 79 at org gradle api internal tasks testing junitplatform JUnitPlatformTestClassProcessor stop JUnitPlatformTestClassProcessor java 75 at org gradle api internal tasks testing SuiteTestClassProcessor stop SuiteTestClassProcessor java 61 at java base jdk internal reflect NativeMethodAccessorImpl invoke0 Native Method at java base jdk internal reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 62 at java base jdk internal reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 43 at java base java lang reflect Method invoke Method java 566 at org gradle internal dispatch ReflectionDispatch dispatch ReflectionDispatch java 36 at org gradle internal dispatch ReflectionDispatch dispatch ReflectionDispatch java 24 at org gradle internal dispatch ContextClassLoaderDispatch dispatch ContextClassLoaderDispatch java 33 at org gradle internal dispatch ProxyDispatchAdapter$DispatchingInvocationHandler invoke ProxyDispatchAdapter java 94 at com sun proxy $Proxy2 stop Unknown Source at org gradle api internal tasks testing worker TestWorker$3 run TestWorker java 193 at org gradle api internal tasks testing worker TestWorker executeAndMaintainThreadName TestWorker java 129 at org gradle api internal tasks testing worker TestWorker execute TestWorker java 100 at org gradle api internal tasks testing worker TestWorker execute TestWorker java 60 at org gradle process internal worker child ActionExecutionWorker execute ActionExecutionWorker java 56 at org gradle process internal worker child SystemApplicationClassLoaderWorker call SystemApplicationClassLoaderWorker java 133 at org gradle process internal worker child SystemApplicationClassLoaderWorker call SystemApplicationClassLoaderWorker java 71 at worker org gradle process internal worker GradleWorkerMain run GradleWorkerMain java 69 at worker org gradle process internal worker GradleWorkerMain main GradleWorkerMain java 74 ```

Maxwell DeKock · Answer

I should mention I m using Quarkus After some experimenting I think this is caused by the ` QuarkusTest` annotation

Tom · Answer

Are you calling the instance or static version of `stubFor`

Maxwell DeKock · Answer

The instance

Tom · Answer

OK that s strange I can t see how this could end up null in that case without seeing what else is going on

Tom · Answer

Perhaps trying it without the Quarkus extension present might reveal this

Maxwell DeKock · Answer

I can confirm that it is the ` QuarkusTest` annotation I did find a solution though Quarkus provides a way to set up services before starting the tests I just followed along here and it fixed the issue <https quarkus io guides getting started testing altering the test class>