We have test which checks whether EIS is capable to finish transaction after JVM crash.
The scenario is following:

• 2 test XA resources are enlisted
• EIS RAR XATerminator calls prepare and commit
• JVM crash occurs at the start of the first XAResource.commit call
• app server is restarted
• doRecoveryScan()/waitForOrphanInterval/doRecoveryScan()
• both (mock) XAResources are not rolled-back
• EIS XATerminator.commit is called
• doRecoveryScan()/waitForOrphanInterval/doRecoveryScan()
• both (mock) XAResources are committed

but the committed tx is not removed from log:

jvmCrashAfterPrepareJTS(org.jboss.as.test.jbossts.crashrec.jca.test.JcaInflowTransactionTestCase)  Time elapsed: 125.532 sec  <<< FAILURE!
java.lang.AssertionError: After commiting txn there should be no one in the txn log expected:<0> but was:<1>
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.failNotEquals(Assert.java:834)
	at org.junit.Assert.assertEquals(Assert.java:645)
	at org.jboss.as.test.jbossts.crashrec.jca.test.JcaInflowTransactionTestCase.jvmCrashAfterPrepareJTS(JcaInflowTransactionTestCase.java:763)