Test Events were not Received Error:
NoClassDefFoundError on running unit test after updating android studio to ArticFox | 2020.3.1.
Below is the full error:
java.lang.NoClassDefFoundError: jdk/internal/reflect/GeneratedSerializationConstructorAccessor1
at jdk.internal.reflect.GeneratedSerializationConstructorAccessor1.newInstance(Unknown Source)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at java.base/java.io.ObjectStreamClass.newInstance(ObjectStreamClass.java:1092)
at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2180)
at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1679)
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:493)
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:451)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:122)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:69)
at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:68)
at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:73)
Caused by: java.lang.ClassNotFoundException: jdk.internal.reflect.GeneratedSerializationConstructorAccessor1
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 11 more
I have just downloaded the latest android studio, clone a project and trying to run unit tests.
How can I fix this? I am using embedded JDK (which is Java 11.0).
It was happening due to the jacoco. Latest android studio comes with Java 11 but we were using Java 9. Making below changes fixed it.
jacoco { includeNoLocationClasses = true }
to
jacoco {
includeNoLocationClasses = true
excludes = ['jdk.internal.*']
}