@@ -146,10 +146,15 @@ func (h *handler) ServeHTTP(w http.ResponseWriter, req *http.Request) error {
	// Handle "/".
	if req.URL.Path == "/" {
		return h.ChangesHandler(w, req)
	}

	// Handle "/mock".
	if req.URL.Path == "/mock" {
		return h.MockHandler(w, req)
	}

	// Handle "/{changeID}" and "/{changeID}/...".
	elems := strings.SplitN(req.URL.Path[1:], "/", 3)
	changeID, err := strconv.ParseUint(elems[0], 10, 64)
	if err != nil {
		return httperror.HTTP{Code: http.StatusNotFound, Err: fmt.Errorf("invalid change ID %q: %v", elems[0], err)}
@@ -287,10 +292,57 @@ func (s state) augmentUnread(ctx context.Context, es []component.ChangeEntry, is
		es[i].Unread = unread
	}
	return es
}

func (h *handler) MockHandler(w http.ResponseWriter, req *http.Request) error {
	if req.Method != http.MethodGet {
		return httperror.Method{Allowed: []string{http.MethodGet}}
	}
	st, err := h.state(req, 0)
	if err != nil {
		return err
	}
	t, err := loadTemplates(st.State, h.Options.BodyPre)
	if err != nil {
		return fmt.Errorf("loadTemplates: %v", err)
	}
	w.Header().Set("Content-Type", "text/html; charset=utf-8")
	err = t.ExecuteTemplate(w, "review-mock", struct {
		state
		Review changes.Review
	}{
		state: st,
		Review: changes.Review{
			ID:        0,
			User:      users.User{Login: "Eric Grosse", AvatarURL: "https://lh6.googleusercontent.com/-_sdEtv2PRxk/AAAAAAAAAAI/AAAAAAAAAAA/aE1Q66Cuvb4/s100-p/photo.jpg"},
			CreatedAt: time.Now().UTC(),
			Edited:    nil,
			State:     changes.Approved,
			Body:      "",
			Reactions: []reactions.Reaction{},
			Editable:  true,
			Comments: []changes.InlineComment{
				{
					File: "rpc/keyserver/server.go",
					Line: 26,
					Body: "Ok by me, but how was this chosen?",
				},
				{
					File: "rpc/keyserver/server.go",
					Line: 31,
					Body: "As someone who reads the server logs, my gut feeling is that 1 QPS of Lookup logs will give me sufficient data to tell me the system is working, without creating a big mess.",
				},
			},
		},
	})
	if err != nil {
		return fmt.Errorf("t.ExecuteTemplate: %v", err)
	}
	return nil
}

func (h *handler) ChangeHandler(w http.ResponseWriter, req *http.Request, changeID uint64) error {
	if req.Method != http.MethodGet {
		return httperror.Method{Allowed: []string{http.MethodGet}}
	}
	state, err := h.state(req, changeID)