new file mode 100644
--- /dev/null
+++ b/stub_status.t
@@ -0,0 +1,188 @@
+#!/usr/bin/perl
+
+# (C) Andrey Zelenkov
+# (C) Nginx, Inc.
+
+# Tests for stub status module.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/http stub_status/)->plan(34);
+
+$t->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+
+events {
+}
+
+http {
+    %%TEST_GLOBALS_HTTP%%
+
+    server {
+        listen       127.0.0.1:8080;
+        server_name  localhost;
+
+        add_header X-Active $connections_active;
+        add_header X-Reading $connections_reading;
+        add_header X-Writing $connections_writing;
+        add_header X-Waiting $connections_waiting;
+
+        location / { }
+        location /rate {
+            limit_rate 15;
+        }
+        location /stub {
+            stub_status;
+        }
+    }
+}
+
+EOF
+
+$t->write_file('index.html', '');
+$t->run();
+
+###############################################################################
+
+my %status = status('/stub');
+like(http_get('/stub'), qr/200 OK/, 'get request');
+is($status{'active'}, 1, 'open connection');
+is($status{'requests'}, 1, 'first request');
+is($status{'accepts'}, 1, 'first request accepted');
+is($status{'handled'}, 1, 'first request handled');
+is($status{'writing'}, 1, 'first response');
+is($status{'reading'}, 0, 'not reading');
+
+# pipelined requests
+
+my $s = http(<<EOF, start => 1);
+GET / HTTP/1.1
+Host: localhost
+
+GET / HTTP/1.1
+Host: localhost
+
+EOF
+
+%status = status('/stub');
+is($status{'requests'}, 5, 'requests increased by 2');
+is($status{'accepts'}, 4, 'accepts increased by 1');
+
+$s->close();
+
+# states
+
+$s = http('', start => 1);
+
+%status = status('/stub');
+is($status{'active'}, 2, 'active');
+is($status{'waiting'}, 1, 'waiting state');
+is($status{'reading'}, 0, 'waiting state - not reading');
+is($status{'writing'}, 1, 'waiting state - not writing');
+
+http(<<EOF, start => 1, socket => $s);
+GET /rate HTTP/1.0
+EOF
+
+%status = status('/stub');
+is($status{'waiting'}, 0, 'reading state - not waiting');
+is($status{'reading'}, 1, 'reading state');
+is($status{'writing'}, 1, 'reading state - not writing');
+
+http(<<EOF, start => 1, socket => $s);
+Host: localhost
+
+EOF
+
+%status = status('/stub');
+is($status{'waiting'}, 0, 'writing state - not waiting');
+is($status{'reading'}, 0, 'writing state - not reading');
+is($status{'writing'}, 2, 'writing state');
+
+$s->close();
+
+# head and post requests
+
+like(http_head('/stub'), qr/200 OK/, 'head request');
+like(http_post('/stub'), qr/405 Not Allowed/, 'post request');
+
+# embedded variables in headers
+
+my $r = http_get('/stub');
+like($r, qr/X-Active: 1/, 'get - var active');
+like($r, qr/X-Reading: 0/, 'get - var reading');
+like($r, qr/X-Writing: 1/, 'get - var writing');
+like($r, qr/X-Waiting: 0/, 'get - var waiting');
+
+$r = http_head('/stub');
+like($r, qr/X-Active: 1/, 'head - var active');
+like($r, qr/X-Reading: 0/, 'head - var reading');
+like($r, qr/X-Writing: 1/, 'head - var writing');
+like($r, qr/X-Waiting: 0/, 'head - var waiting');
+is(get_body($r), '', 'head - empty body');
+
+$r = http_get('/');
+like($r, qr/X-Active: 1/, 'no stub - var active');
+like($r, qr/X-Reading: 0/, 'no stub - var reading');
+like($r, qr/X-Writing: 1/, 'no stub - var writing');
+like($r, qr/X-Waiting: 0/, 'no stub - var waiting');
+
+###############################################################################
+
+sub get_body {
+	my ($r) = @_;
+	$r =~ /.*?\x0d\x0a?\x0d\x0a?(.*)/ms;
+	return $1;
+}
+
+sub http_post {
+	my ($url) = @_;
+	return http(<<EOF);
+POST $url HTTP/1.0
+Host: localhost
+
+EOF
+}
+
+sub status {
+	my ($url) = @_;
+	my $r = http_get($url);
+
+	$r =~ /
+		Active\ connections:\ +(\d+)
+		\s+server\ accepts\ handled\ requests
+		\s+(\d+)\ +(\d+)\ +(\d+)
+		\s+Reading:\ +(\d+)
+		\s+Writing:\ +(\d+)
+		\s+Waiting:\ +(\d+)
+	/sx;
+
+	return ('active' => $1,
+		'accepts' => $2,
+		'handled' => $3,
+		'requests' => $4,
+		'reading' => $5,
+		'writing' => $6,
+		'waiting' => $7,
+	);
+}
+
+###############################################################################