@Test
public void testBinaryRelayPayloadExpandsToOriginalPayload()
        throws IOException, XMLStreamException {

    // Transform request soap message into a binary payload
    BinaryRelayBuilder builder = new BinaryRelayBuilder();
    InputStream stream = new ReaderInputStream(new StringReader(xml), UTF8);
    OMElement element = builder.processDocument(stream, "text/xml", msgCtx);
    msgCtx.setEnvelope((SOAPEnvelope)element);
    // Build message when using pass through pipe or binary relay builder
    RelayUtils.buildMessage(msgCtx);
    // Ensure that the binary payload is transformed to the appropriate element
    assertEquals(payloadQName, msgCtx.getEnvelope().getBody().getFirstElement().getQName());
    // Ensure that the body isn't fully build to support the use of deferred building
    assertFalse(msgCtx.getEnvelope().getBody().isComplete());
}