// test query parameters before parsing
assertEquals("Query parameters are not empty before parsing", 0, request.getParameterMap()
.size());
// invoke filter
new WebSphereParametersFilter().doFilter(request, response, chain);
// test query and POST parameters
assertEquals("There are not 6 query parameters", 6, chain.getRequest().getParameterMap()
.size());
assertParameters(chain.getRequest(), "a", "b", "c");