new file mode 100644
--- /dev/null
+++ b/perl_sleep.t
@@ -0,0 +1,82 @@
+#!/usr/bin/perl
+
+# (C) Maxim Dounin
+
+# Tests for embedded perl module, $r->sleep().
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/http perl ssi/)->plan(2)
+	->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;
+
+        location / {
+            ssi on;
+            sendfile_max_chunk 100;
+            postpone_output 0;
+        }
+
+        location /sleep {
+            perl 'sub {
+                my $r = shift;
+
+                $r->sleep(100, sub {
+                    my $r = shift;
+                    $r->send_http_header;
+                    $r->print("it works");
+                    return OK;
+                });
+
+                return OK;
+            }';
+        }
+    }
+}
+
+EOF
+
+$t->write_file('subrequest.html', ('x' x 200) .
+	'X<!--#include virtual="/sleep" -->X');
+
+$t->run();
+
+###############################################################################
+
+like(http_get('/sleep'), qr/works/, 'perl sleep');
+
+TODO: {
+local $TODO = 'not yet' unless $t->has_version('1.11.13');
+
+like(http_get('/subrequest.html'), qr/works/, 'perl sleep in subrequest');
+
+}
+
+###############################################################################