Tests: basic stream upstream zone tests.
diff --git a/stream_upstream_zone.t b/stream_upstream_zone.t
new file mode 100644
index 0000000..c4d32f0
--- /dev/null
+++ b/stream_upstream_zone.t
@@ -0,0 +1,93 @@
+#!/usr/bin/perl
+
+# (C) Sergey Kandaurov
+# (C) Nginx, Inc.
+
+# Stream tests for upstream zone.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+use Test::Nginx::Stream qw/ stream /;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/stream stream_return stream_upstream_zone/)
+ ->plan(2)->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+
+events {
+}
+
+stream {
+ log_format test $upstream_addr;
+
+ upstream u {
+ zone u 1m;
+ server 127.0.0.1:8081;
+ }
+
+ upstream u2 {
+ zone u;
+ server 127.0.0.1:8081 down;
+ server 127.0.0.1:8081 backup down;
+ }
+
+ server {
+ listen 127.0.0.1:8081;
+ return OK;
+ }
+
+ server {
+ listen 127.0.0.1:8091;
+ proxy_pass u;
+
+ access_log %%TESTDIR%%/access1.log test;
+ }
+
+ server {
+ listen 127.0.0.1:8092;
+ proxy_pass u2;
+
+ access_log %%TESTDIR%%/access2.log test;
+ }
+}
+
+EOF
+
+$t->write_file('index.html', '');
+$t->run();
+
+###############################################################################
+
+my $p = port(8081);
+
+TODO: {
+todo_skip 'leaves coredump', 2 unless $^O ne 'MSWin32'
+ or $ENV{TEST_NGINX_UNSAFE} or $t->has_version('1.13.4');
+
+stream('127.0.0.1:' . port(8091));
+stream("127.0.0.1:" . port(8092));
+
+$t->stop();
+
+is($t->read_file('access1.log'), "127.0.0.1:$p\n", 'upstream name');
+is($t->read_file('access2.log'), "u2\n", 'no live upstreams');
+
+}
+
+###############################################################################