@Test
public void testValidateSimpleRequestAndSendResponse() throws Exception {
    //add the mock responses with request path, expected request and response
    //expected request is compared with the actual one using xmlunit
    httpTestServer.addResponseForRequest("/test",
        new ClassPathResource("mock-request/validSearchByID12345.xml"),
        new ClassPathResource("mock-response/validSearchByID12345.xml"),
        null);

    //load and send request to OSB
    final ClassPathResource resource =
        new ClassPathResource("/request/validSearchByIDRequest.xml");
    final ContentExchange contentExchange =
        httpTestClient.postToUrl(osbEndpoint, resource.getInputStream());

    //assert that a 200 status is retrieved
    assertThat("error: " + contentExchange.getResponseContent(),
        contentExchange.getResponseStatus(), is(200));
    //other assert to the payload
    ...
}

@Test
public void testValidateBadRequest() throws Exception {
    //no responses are put in the mock server
    //load and send request to OSB
    final ClassPathResource resource =
        new ClassPathResource("/request/invalidRequest.xml");
    final ContentExchange contentExchange =
        httpTestClient.postToUrl(osbEndpoint, resource.getInputStream());

    //assert that a 500 status is retrieved
    assertThat(contentExchange.getResponseStatus(), is(500));
    //other assert to the format of the SOAP fault
    ...
}