Add a cowboy_rest test for malformed if-*-match headers

test/handlers/rest_hello_h.erl

@@ -0,0 +1,16 @@
+%% This module sends a hello world response via a REST handler.
+
+-module(rest_hello_h).
+
+-export([init/2]).
+-export([content_types_provided/2]).
+-export([get_text_plain/2]).
+
+init(Req, Opts) ->
+	{cowboy_rest, Req, Opts}.
+
+content_types_provided(Req, State) ->
+	{[{{<<"text">>, <<"plain">>, []}, get_text_plain}], Req, State}.
+
+get_text_plain(Req, State) ->
+	{<<"This is REST!">>, Req, State}.

test/rest_handler_SUITE.erl

@@ -38,6 +38,7 @@ end_per_group(Name, _) ->
 
 init_dispatch(_) ->
 	cowboy_router:compile([{'_', [
+		{"/", rest_hello_h, []},
 		{"/provide_callback_missing", provide_callback_missing_h, []},
 		{"/switch_handler", switch_handler_h, run},
 		{"/switch_handler_opts", switch_handler_h, hibernate}
@@ -53,6 +54,26 @@ do_decode(Headers, Body) ->
 
 %% Tests.
 
+error_on_malformed_if_match(Config) ->
+	doc("A malformed If-Match header must result in a 400 response."),
+	ConnPid = gun_open(Config),
+	Ref = gun:get(ConnPid, "/", [
+		{<<"accept-encoding">>, <<"gzip">>},
+		{<<"if-match">>, <<"bad">>}
+	]),
+	{response, _, 400, _} = gun:await(ConnPid, Ref),
+	ok.
+
+error_on_malformed_if_none_match(Config) ->
+	doc("A malformed If-None-Match header must result in a 400 response."),
+	ConnPid = gun_open(Config),
+	Ref = gun:get(ConnPid, "/", [
+		{<<"accept-encoding">>, <<"gzip">>},
+		{<<"if-none-match">>, <<"bad">>}
+	]),
+	{response, _, 400, _} = gun:await(ConnPid, Ref),
+	ok.
+
 provide_callback_missing(Config) ->
 	doc("A 500 response must be sent when the ProvideCallback can't be called."),
 	ConnPid = gun_open(Config),