Tests to show that de/serialization of ConcurrentHashMap fails

[pzygielo]

This results in

  <testcase classname="javax.rmi.CORBA.serialization.SerializationTest" name="readRandom" time="0.0" />
  <testcase classname="javax.rmi.CORBA.serialization.SerializationTest" name="readHashMap" time="0.001" />
  <testcase classname="javax.rmi.CORBA.serialization.SerializationTest" name="readConcurrentHashMap" time="0.01">
    <error message="WARNING: 00810011: Exception from readValue on ValueHandler in CDRInputStream" type="org.omg.CORBA.MARSHAL">org.omg.CORBA.MARSHAL: WARNING: 00810011: Exception from readValue on ValueHandler in CDRInputStream  vmcid: OMG  minor code: 11 completed: Maybe
	at com.sun.proxy.$Proxy3.valuehandlerReadException(Unknown Source)
	at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.readRMIIIOPValueType(CDRInputStream_1_0.java:797)
	at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:892)
	at com.sun.corba.ee.impl.encoding.CDRInputObject.read_value(CDRInputObject.java:497)
	at com.sun.corba.ee.impl.io.IIOPInputStream.inputObjectField(IIOPInputStream.java:2085)
	at com.sun.corba.ee.impl.io.IIOPInputStream.inputClassFields(IIOPInputStream.java:2327)
	at com.sun.corba.ee.impl.io.IIOPInputStream.defaultReadObjectDelegate(IIOPInputStream.java:493)
	at com.sun.corba.ee.impl.io.InputStreamHook.defaultReadObject(InputStreamHook.java:205)
	at java.util.concurrent.ConcurrentHashMap.readObject(ConcurrentHashMap.java:1438)
	at com.sun.corba.ee.impl.io.IIOPInputStream.invokeObjectReader(IIOPInputStream.java:1758)
	at com.sun.corba.ee.impl.io.IIOPInputStream.inputObject(IIOPInputStream.java:1112)
	at com.sun.corba.ee.impl.io.IIOPInputStream.simpleReadObject(IIOPInputStream.java:322)
	at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValueInternal(ValueHandlerImpl.java:283)
	at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValue(ValueHandlerImpl.java:249)
	at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.readRMIIIOPValueType(CDRInputStream_1_0.java:790)
	at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:892)
	at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:710)
	at com.sun.corba.ee.impl.encoding.CDRInputObject.read_value(CDRInputObject.java:491)
	at javax.rmi.CORBA.serialization.SerializationTest.run(SerializationTest.java:764)
	at test.Test.runTestClass(Test.java:1110)
	at test.Test.run(Test.java:827)
	at test.Test.runTestFile(Test.java:1017)
	at test.Test.run(Test.java:834)
	at test.Test.main(Test.java:308)
Caused by: java.lang.NullPointerException
	at com.sun.corba.ee.impl.io.IIOPInputStream.inputObject(IIOPInputStream.java:949)
	at com.sun.corba.ee.impl.io.IIOPInputStream.simpleReadObject(IIOPInputStream.java:322)
	at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValueInternal(ValueHandlerImpl.java:283)
	at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValue(ValueHandlerImpl.java:249)
	at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.readRMIIIOPValueType(CDRInputStream_1_0.java:790)
</error>
  </testcase>