Check to make sure you have all of the test Jar files in your classpath - I remember having this error and I was missing one of them (can't remember which one I'm afraid...)
On Aug 26, 10:38 pm, Arnold <[email protected]> wrote: > When using JDO persistence manager to begin a transaction, > DatastoreService().getCurrentTransaction() seems to fail. > > A unit test: > ---------------------------------------------------------- > public class TransactionTest{ > private final LocalServiceTestHelper helper = > new LocalServiceTestHelper(new > LocalDatastoreServiceTestConfig()); > > @Before > public void setUp() { > helper.setUp(); > } > > @After > public void tearDown() { > helper.tearDown(); > } > > @Test > public void test(){ > PersistenceManager pm = PMF.get().getPersistenceManager(); > Transaction tx = pm.currentTransaction(); > try{ > tx.begin(); > > DatastoreServiceFactory.getDatastoreService().getCurrentTransaction(); > > tx.commit(); > }finally{ > if(pm.currentTransaction().isActive()){ > pm.currentTransaction().rollback(); > } > pm.close(); > } > > }} > > ---------------------------------------------------------- > > The test fails with stack trace: > ---------------------------------------------------------- > java.lang.IllegalStateException: java.util.NoSuchElementException > at > com.google.appengine.api.datastore.TransactionStackImpl.peek(TransactionStackImpl.java: > 70) > at > com.google.appengine.api.datastore.DatastoreServiceImpl.getCurrentTransaction(DatastoreServiceImpl.java: > 307) > at TransactionTest.test(TransactionTest.java:37) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: > 39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: > 25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.junit.runners.model.FrameworkMethod > $1.runReflectiveCall(FrameworkMethod.java:44) > at > org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java: > 15) > at > org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java: > 41) > at > org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java: > 20) > at > org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java: > 28) > at > org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java: > 31) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java: > 73) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java: > 46) > at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180) > at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41) > at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173) > at > org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java: > 28) > at > org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java: > 31) > at org.junit.runners.ParentRunner.run(ParentRunner.java:220) > at > org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java: > 46) > at > org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java: > 38) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java: > 467) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java: > 683) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java: > 390) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java: > 197) > Caused by: java.util.NoSuchElementException > at java.util.LinkedList.getFirst(LinkedList.java:109) > at > com.google.appengine.api.datastore.TransactionStackImpl.peek(TransactionStackImpl.java: > 68) > ... 26 more > > ---------------------------------------------------------- > > As a result, the example shown here: > > http://code.google.com/appengine/docs/java/taskqueue/overview.html#Ta... > > does not work. > > Can someone help shade some light on what I may be missing? > > Thanks. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
