org.mutabilitydetector.unittesting.MutabilityAssertionError

Expected: com.github.grundlefleck.AutoValue_Car to be IMMUTABLE but: com.github.grundlefleck.AutoValue_Car is actually NOT_IMMUTABLE Reasons: Field can have an abstract type (com.github.grundlefleck.Registration) assigned to it. [Field: registration, Class: com.github.grundlefleck.AutoValue_Car] Allowed reasons: None.

Samebug tips0

There are no available Samebug tips for this exception. If you know how to solve this issue, help other users by writing a short tip.

Don't give up yet. Paste your full stack trace to get a solution.

Solutions on the web4

  • via GitHub by jnorthrup
    , 9 months ago
    Expected: com.github.grundlefleck.AutoValue_Car to be IMMUTABLE but: com.github.grundlefleck.AutoValue_Car is actually NOT_IMMUTABLE Reasons: Field can have an abstract type (com.github.grundlefleck.Registration) assigned to it. [Field: registration, Class: com.github.grundlefleck.AutoValue_Car] Allowed reasons: None.
  • Expected: mutability.Student to be IMMUTABLE but: mutability.Student is actually NOT_IMMUTABLE Reasons: Field can have a mutable type (java.util.ArrayList) assigned to it. [Field: hobbies, Class: mutability.Student] Allowed reasons: None.
  • via GitHub by neomatrix369
    , 1 year ago
    Expected: OnlyPrivateConstructors to be IMMUTABLE but: OnlyPrivateConstructors is actually NOT_IMMUTABLE Reasons: Can be subclassed, therefore parameters declared to be this type could be mutable subclasses at runtime. [Class
  • Stack trace

    • org.mutabilitydetector.unittesting.MutabilityAssertionError: Expected: com.github.grundlefleck.AutoValue_Car to be IMMUTABLE but: com.github.grundlefleck.AutoValue_Car is actually NOT_IMMUTABLE Reasons: Field can have an abstract type (com.github.grundlefleck.Registration) assigned to it. [Field: registration, Class: com.github.grundlefleck.AutoValue_Car] Allowed reasons: None. at org.mutabilitydetector.unittesting.internal.AssertionReporter.assertThat(AssertionReporter.java:43) at org.mutabilitydetector.unittesting.MutabilityAsserter.assertImmutable(MutabilityAsserter.java:102) at org.mutabilitydetector.unittesting.MutabilityAssert.assertImmutable(MutabilityAssert.java:629) at com.github.grundlefleck.CarTest.isImmutable(CarTest.java:21) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252) at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141) at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189) at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165) at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85) at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115) at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)

    Write tip

    You have a different solution? A short tip here would help you and many other users who saw this issue last week.

    Users with the same issue

    You’re the first here who have seen this exception.