new file mode 100644
--- /dev/null
+++ b/proxy-cache.t
@@ -0,0 +1,85 @@
+#!/usr/bin/perl
+
+# (C) Maxim Dounin
+
+# Tests for http proxy cache.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More tests => 2;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new();
+
+$t->write_file_expand('nginx.conf', <<'EOF');
+
+master_process off;
+daemon         off;
+
+events {
+}
+
+http {
+    access_log    off;
+    root          %%TESTDIR%%;
+
+    client_body_temp_path  %%TESTDIR%%/client_body_temp;
+    fastcgi_temp_path      %%TESTDIR%%/fastcgi_temp;
+    proxy_temp_path        %%TESTDIR%%/proxy_temp;
+
+    proxy_cache_path   %%TESTDIR%%/cache  levels=1:2
+                       keys_zone=NAME:10m
+                       inactive=5m     clean_time=2h00m;
+
+    server {
+        listen       127.0.0.1:8080;
+        server_name  localhost;
+
+        location / {
+            proxy_pass    http://127.0.0.1:8081;
+
+            proxy_cache   NAME;
+
+            proxy_cache_valid   200 302  1h;
+            proxy_cache_valid   301      1d;
+            proxy_cache_valid   any      1m;
+
+            proxy_cache_min_uses  1;
+
+            proxy_cache_use_stale   error  timeout invalid_header http_500;
+        }
+    }
+    server {
+        listen       127.0.0.1:8081;
+        server_name  localhost;
+
+        location / {
+        }
+    }
+}
+
+EOF
+
+$t->write_file('t.html', 'SEE-THIS');
+$t->run();
+
+###############################################################################
+
+like(http_get('/t.html'), qr/SEE-THIS/, 'proxy request');
+
+$t->write_file('t.html', 'NOOP');
+like(http_get('/t.html'), qr/SEE-THIS/, 'proxy request cached');
+
+###############################################################################