--- a/rewrite.t
+++ b/rewrite.t
@@ -21,7 +21,7 @@ use Test::Nginx;
 select STDERR; $| = 1;
 select STDOUT; $| = 1;
 
-my $t = Test::Nginx->new()->has(qw/http rewrite/)->plan(21)
+my $t = Test::Nginx->new()->has(qw/http rewrite/)->plan(22)
 	->write_file_expand('nginx.conf', <<'EOF');
 
 %%TEST_GLOBALS%%
@@ -58,6 +58,10 @@ http {
             return 200;
         }
 
+        location /return306 {
+            return 306;
+        }
+
         location /return405 {
             return 405;
         }
@@ -151,6 +155,14 @@ like(http_get('/no?a=b'), qr!^Location: 
 
 like(http_get('/return204'), qr!204 No Content!, 'return 204');
 like(http_get('/return200'), qr!200 OK!, 'return 200');
+
+TODO: {
+local $TODO = 'not yet' unless $t->has_version('1.5.6');
+
+like(http_get('/return306'), qr!HTTP/1.1 306 !, 'return 306');
+
+}
+
 like(http_get('/return405'), qr!HTTP/1.1 405.*body!ms, 'return 405');
 
 like(http_get('/error404return405'), qr!HTTP/1.1 404!, 'error 404 return 405');