it("should return false with default true", function() {
   const req = makeMockReq({ noattr: false });
   expect(getParam(req, "noattr"))
     .toEqual(false);
   expect(getParam(req, "noattr", null, true))
     .toEqual(false);
   expect(getParam(req, "noattr", (p) => p, true))
     .toEqual(false);
 });
 it("should handle camelcase when requesting underscores", function() {
   const req = makeMockReq({top_fields: "foo"});
   expect(getParam(req, "top_fields")).toEqual("foo");
   expect(getParam(req, "topFields")).toEqual("foo");
 });