java.lang.IncompatibleClassChangeError: Implementing class

[mikael petterson]

Hi,

I am running maven to build and test in Eclipse.

So I have updated two libraries so I started to recomplile my product.

I got the following for to classes ( see below). However if I run the testcases separately they work fine.

It is only when I run in maven that I get this problem. An i checked my maven pom.xml and we have the following.

This is how my execution part looks in maven:

<plugin>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.18.1</version>
        <executions>
          <execution>
            <id>default-test</id>
            <phase>test</phase>
            <goals>
              <goal>test</goal>
            </goals>
            <configuration>
              <argLine>-XX:-UseSplitVerifier</argLine>
              <forkCount>4</forkCount>
              <excludes>
                <exclude>**/ManualRestartTest.java</exclude>
                <exclude>**/Fork*.java</exclude>
                <exclude>**/Generate*.java</exclude>
              </excludes>
              <skip>false</skip>
            </configuration>
          </execution>
        </executions>
        <configuration>
          <argLine>-XX:-UseSplitVerifier</argLine>
          <forkCount>4</forkCount>
          <excludes>
            <exclude>**/ManualRestartTest.java</exclude>
            <exclude>**/Fork*.java</exclude>
            <exclude>**/Generate*.java</exclude>
          </excludes>
          <skip>false</skip>
        </configuration>
      </plugin>

Could it be that something is running in parallel?

java.lang.IncompatibleClassChangeError: Implementing class

                           at java.lang.ClassLoader.defineClass1(Native Method)

                           at java.lang.ClassLoader.defineClass(ClassLoader.java:800)

                           at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

                           at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)

                           at java.net.URLClassLoader.access$100(URLClassLoader.java:71)

                           at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

                           at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

                           at java.security.AccessController.doPrivileged(Native Method)

                           at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

                           at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

                           at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

                           at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

                           at java.lang.Class.getDeclaredConstructors0(Native Method)

                           at java.lang.Class.privateGetDeclaredConstructors(Class.java:2493)

                           at java.lang.Class.getDeclaredConstructors(Class.java:1901)

                           at org.mockito.internal.creation.jmock.ClassImposterizer.setConstructorsAccessible(ClassImposterizer.java:75)

                           at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:70)

                           at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:56)

                           at org.mockito.internal.creation.CglibMockMaker.createMock(CglibMockMaker.java:23)

                           at org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:43)

                           at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:26)

                           at org.mockito.internal.MockitoCore.mock(MockitoCore.java:51)

                           at org.mockito.Mockito.mock(Mockito.java:1243)

                           at org.mockito.Mockito.mock(Mockito.java:1120)

Has anyone found this? We run mockito 1.10.19.

br,

//mikael

[Brice Dutheil]

Hi,

I don't know such problem with mockito, but Eclipse compiler is known to overwrite classes written by a mvn compile, that may be the case here, i.e. your code is somehow desychronized. And when loaded loaded in the JVM, it raises an error.

The bottom line advise would be to check your dev environment.

-- Brice

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[mikael petterson]

Hi,

I have this problem only when I use the changed version the class being mocked. If I use the unchanged version of the class being mocked I don't see this problem.
So I guess that there must be something in my changed class ( the one being mocked) that has something new that is causing this error.

Any more ideas?

//mike
 

[Szczepan Faber]

Did you try with latest beta?

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