--- /dev/null
+print "1..4\n";
+
+use HTTP::Response;
+use HTTP::Headers::Auth;
+
+$res = HTTP::Response->new(401);
+$res->push_header(WWW_Authenticate => qq(Foo realm="WallyWorld", foo=bar, Bar realm="WallyWorld2"));
+$res->push_header(WWW_Authenticate => qq(Basic Realm="WallyWorld", foo=bar, bar=baz));
+
+print $res->as_string;
+
+%auth = $res->www_authenticate;
+
+print "not " unless keys(%auth) == 3;
+print "ok 1\n";
+
+print "not " unless $auth{basic}{realm} eq "WallyWorld" &&
+ $auth{bar}{realm} eq "WallyWorld2";
+print "ok 2\n";
+
+$a = $res->www_authenticate;
+print "not " unless $a eq 'Foo realm="WallyWorld", foo=bar, Bar realm="WallyWorld2", Basic Realm="WallyWorld", foo=bar, bar=baz';
+print "ok 3\n";
+
+$res->www_authenticate("Basic realm=foo1");
+print $res->as_string;
+
+$res->www_authenticate(Basic => {realm => foo2});
+print $res->as_string;
+
+$res->www_authenticate(Basic => [realm => foo3, foo=>33],
+ Digest => {nonce=>"bar", foo=>'foo'});
+print $res->as_string;
+
+$_ = $res->as_string;
+
+print "not " unless /WWW-Authenticate: Basic realm="foo3", foo=33/ &&
+ (/WWW-Authenticate: Digest nonce=bar, foo=foo/ ||
+ /WWW-Authenticate: Digest foo=foo, nonce=bar/);
+print "ok 4\n";
+