TransactionMixIn cannot be used in a test case in FSW

Issue

• The TransactionMixIn cannot be used in a test class, throwing "org.switchyard.SwitchYardException: Unable to bind transaction manager in JNDI".
• See the test code below:

@RunWith(SwitchYardRunner.class)
@SwitchYardTestCaseConfig(
    config = SwitchYardTestCaseConfig.SWITCHYARD_XML,
    mixins = {CDIMixIn.class, TransactionMixIn.class })
public class TransactionTest {

    private static TransactionMixIn transactionMixIn;

    @BeforeClass
    public static void beforeClass() throws Exception {
        transactionMixIn = new TransactionMixIn();
        transactionMixIn.initialize();
    }

    @Test
    public void testSomething() throws Exception {
        ...

• And we get the following error stack trace:

org.switchyard.SwitchYardException: Unable to bind transaction manager in JNDI
                at org.switchyard.component.test.mixins.transaction.TransactionMixIn.initialize(TransactionMixIn.java:80)
                at com.example.app.TransactionTest.beforeClass(TransactionTest.java:22)
                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: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.RunBefores.evaluate(RunBefores.java:24)
                at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
                at org.switchyard.test.SwitchYardRunner.run(SwitchYardRunner.java:85)
                at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
                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: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
                at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
                at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
                at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:325)
                at javax.naming.InitialContext.bind(InitialContext.java:400)
                at org.switchyard.component.test.mixins.transaction.TransactionMixIn.initialize(TransactionMixIn.java:75)
                ... 17 more