参考信息：AUnit 测试注释

@AssemblyTest(project = "AUnitTrainer", displayLabel = "Citizens of the Cloud")

@UnitTest(startComponent = "Simple-Mediation")
public void testSimpleMediation() throws Exception {
    setMessagePart(0, "test/simple-input.xml", "text/xml");
}

@AssertBefore(id="Store-Output")
public void verifySummaryDoc() throws Exception {
    assertEquals("10", evaluateExpression("parts[0].xpath('count(/summary/wd:WorkerSummary)')"));
}

@AssertAfter(id = "Simple-Mediation", step="transform")
public void verifySimpleMediation() throws Exception {
    assertTrue(compare(getTestResourceInputStream("test/simple-expected.xml"), "text/xml", 
        (InputStream) getMediationContext().getMessage().getMessagePart(0, InputStream.class), 
        "text/xml", Comparator.dom));
}
@AssertAfter(id="Process", step="transform")
public void verifySummary() throws Exception {
    assertEquals("Ace Developer", evaluateExpression("parts[0].xpath('/wd:WorkerSummary/wd:Name')"));
    assertEquals("2010-07-27-07:00", evaluateExpression("parts[0].xpath('/wd:WorkerSummary/wd:HireDate')"));
}

@AssertAfterCompletion
public void verifyErrorHandling() throws Exception {
    assertEquals(3, evaluateExpression("props['error.count']"));
}

@AtComponent(id="Get-Workers")
public Action handleGetWorkersInvocation() throws Exception {
    setMessagePart(0, "test/fromworkdayin/workdayin_workers_response.xml", "text/xml");
    return new StandardAction(Action.Type.mock);
}