Hello everyone

I'm using karate-core@v1.5.0 for running integration tests for a Quarkus application. After upgrading to Quarkus version 3.16.3 I keeps receiving an exception "stacktrace added below", its mainly related to a NPE handler from QuarkusClassLoaderHandler from io.github.classgraph. Doing some investigation I've seen that you're using maven-shade-plugin to relocate some package to different names with Karate prefix, so this QuarkusClassLoaderHandler class is being added to Karate package.

Below is the exception trace I'm receiving.

Caused by: java.lang.NullPointerException: Cannot invoke "java.util.Collection.iterator()" because the return value of "karate.nonapi.io.github.classgraph.reflection.ReflectionUtils.getFieldVal(boolean, Object, String)" is null at karate.nonapi.io.github.classgraph.classloaderhandler.QuarkusClassLoaderHandler.findClasspathOrderForQuarkusClassloader(QuarkusClassLoaderHandler.java:120) at karate.nonapi.io.github.classgraph.classloaderhandler.QuarkusClassLoaderHandler.findClasspathOrder(QuarkusClassLoaderHandler.java:111) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ... 18 more

Runner.path("path").parallel(1); is to reproduce the issue.

After doing some investigation I found out that this error is coming from io.github.classgraph and being solved here classgraph/classgraph#893 which is fixing classgraph/classgraph#891 .

My suggestion is basically upgrade io.github.classgraph dependency version for 4.1.178 at least and I believe it will fix it.

My environment is as follows.
JDK: 21
Quarkus: 3.16.3
Karate: 1.5.0