new file mode 100644
--- /dev/null
+++ b/t/gunzip-perl.t
@@ -0,0 +1,78 @@
+#!/usr/bin/perl
+
+# (C) Maxim Dounin
+
+# Tests for gunzip filter module with perl module.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx qw/ :DEFAULT :gzip /;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+eval { require IO::Compress::Gzip; };
+Test::More::plan(skip_all => "IO::Compress::Gzip not found") if $@;
+
+my $t = Test::Nginx->new()->has('perl')->plan(2)
+	->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+master_process off;
+daemon         off;
+
+events {
+}
+
+http {
+    %%TEST_GLOBALS_HTTP%%
+
+    server {
+        listen       127.0.0.1:8080;
+        server_name  localhost;
+
+        gunzip on;
+
+        location / {
+            perl 'sub {
+                my $r = shift;
+                $r->header_out("Content-Encoding", "gzip");
+                $r->send_http_header("text/plain");
+                return OK if $r->header_only;
+                use IO::Compress::Gzip;
+                my $in = "TEST";
+                my $out;
+                IO::Compress::Gzip::gzip(\\$in => \\$out);
+                $r->print($out);
+                return OK;
+            }';
+        }
+    }
+}
+
+EOF
+
+$t->run();
+
+###############################################################################
+
+http_gzip_like(http_gzip_request('/'), qr/TEST/, 'perl response gzipped');
+
+{
+local $TODO = 'requires patched perl module';
+
+like(http_get('/'), qr/TEST/, 'perl response gunzipped');
+}
+
+###############################################################################