@Test
    void testOKCompressionZeroContent() throws IOException, ServletException {
        request.addHeader("feed", "TEST-FEED");
        request.addHeader("periodStartTime", DateUtil.createNormalDateTimeString());
        request.addHeader("periodEndTime", DateUtil.createNormalDateTimeString());
        request.addHeader(StandardHeaderArguments.CONTENT_LENGTH, "0");
        request.addHeader("compression", "GZIP");
        request.setInputStream("".getBytes());

        receiveDataServlet.doPost(request, response);

        checkOK();
    }
The combination of mock and prod classes means this test needs its own
context.
stroom-app/src/test/java/stroom/receive/TestReceiveDataServlet.java