Update cookie tests against latest WPT

The http-state tests were removed and replaced with
tests in HTML pages. I have devised a way to semi-
automatically import them and test them.

Additional fixes were made following changes in
the rfc6265bis draft.

Makefile

@@ -14,12 +14,12 @@ CT_OPTS += -ct_hooks gun_ct_hook [] # -boot start_sasl
 LOCAL_DEPS = ssl
 
 DEPS = cowlib
-dep_cowlib = git https://github.com/ninenines/cowlib 2.11.0
+dep_cowlib = git https://github.com/ninenines/cowlib master
 
 DOC_DEPS = asciideck
 
-TEST_DEPS = $(if $(CI_ERLANG_MK),ci.erlang.mk) ct_helper cowboy ranch
-dep_ct_helper = git https://github.com/extend/ct_helper.git master
+TEST_DEPS = $(if $(CI_ERLANG_MK),ci.erlang.mk) ct_helper cowboy ranch jsx
+dep_ct_helper = git https://github.com/ninenines/ct_helper.git master
 dep_cowboy_commit = 2.9.0
 dep_ranch_commit = 2.0.0
 

rebar.config

@@ -1,4 +1,4 @@
 {deps, [
-{cowlib,".*",{git,"https://github.com/ninenines/cowlib","2.11.0"}}
+{cowlib,".*",{git,"https://github.com/ninenines/cowlib","master"}}
 ]}.
 {erl_opts, [debug_info,warn_export_vars,warn_shadow_vars,warn_obsolete_guard]}.

src/gun_cookies.erl

@@ -185,6 +185,8 @@ session_gc({Mod, State0}) ->
 %% @todo The given URI must be normalized.
 -spec set_cookie(Store, uri_string:uri_map(), binary(), binary(), cow_cookie:cookie_attrs())
 	-> {ok, Store} | {error, any()} when Store::store().
+set_cookie(_, _, Name, Value, _) when byte_size(Name) + byte_size(Value) > 4096 ->
+	{error, larger_than_4096_bytes};
 set_cookie(Store, URI=#{host := Host}, Name, Value, Attrs) ->
 	%% This is where we would add a feature to block cookies (like a blacklist).
 	CurrentTime = erlang:universaltime(),

test/handlers/cookie_set_h.erl

@@ -33,4 +33,10 @@ set_cookie_list(Req=#{qs := <<"prefix">>}) ->
 set_cookie_list(#{qs := <<"secure_http">>}) ->
 	[<<"secure_from_nonsecure_http=1; Secure; Path=/">>];
 set_cookie_list(#{qs := <<"secure_https">>}) ->
-	[<<"secure_from_secure_http=1; Secure; Path=/">>].
+	[<<"secure_from_secure_http=1; Secure; Path=/">>];
+set_cookie_list(Req=#{qs := <<"ttb=",_/bits>>}) ->
+	#{ttb := SetCookies} = cowboy_req:match_qs([ttb], Req),
+	case binary_to_term(SetCookies) of
+		List when is_list(List) -> List;
+		Bin -> [Bin]
+	end.