new file mode 100644
--- /dev/null
+++ b/headers.t
@@ -0,0 +1,75 @@
+#!/usr/bin/perl
+
+# (C) Sergey Kandaurov
+# (C) Nginx, Inc.
+
+# Tests for headers 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/)
+	->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-URI $uri;
+        add_header   X-Always $uri always;
+        expires epoch;
+
+        location /t1 {
+        }
+
+        location /nx {
+        }
+    }
+}
+
+EOF
+
+$t->write_file('t1', '');
+$t->try_run('no add_header always')->plan(6);
+
+###############################################################################
+
+my $r;
+
+# test for header field presence
+
+$r = http_get('/t1');
+like($r, qr/Cache-Control/, 'good expires');
+like($r, qr/X-URI/, 'good add_header');
+like($r, qr/X-Always/, 'good add_header always');
+
+$r = http_get('/nx');
+unlike($r, qr/Cache-Control/, 'bad expires');
+unlike($r, qr/X-URI/, 'bad add_header');
+like($r, qr/X-Always/, 'bad add_header always');
+
+###############################################################################