### Question:
TraceeServletRequestListener implements ServletRequestListener { @Override public void requestDestroyed(final ServletRequestEvent sre) { backend.clear(); } protected  TraceeServletRequestListener(TraceeBackend backend, HttpHeaderTransport transportSerialization);  TraceeServletRequestListener(); @Override void requestDestroyed(final ServletRequestEvent sre); @Override void requestInitialized(final ServletRequestEvent sre);  }### Answer:
@Test public void testClearsBackendAfterProcessing() { unit.requestDestroyed(new ServletRequestEvent(mock(ServletContext.class), httpServletRequest)); verify(backend, atLeastOnce()).clear(); }