new file mode 100644
--- /dev/null
+++ b/proxy_set_body.t
@@ -0,0 +1,87 @@
+#!/usr/bin/perl
+
+# (C) Maxim Dounin
+
+# Tests for proxy_set_body.
+
+###############################################################################
+
+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 proxy rewrite/)->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 / {
+            proxy_pass http://127.0.0.1:8080/body;
+            proxy_set_body "body";
+        }
+
+        location /p1 {
+            proxy_pass http://127.0.0.1:8080/x1;
+            proxy_set_body "body";
+        }
+
+        location /p2 {
+            proxy_pass http://127.0.0.1:8080/body;
+            proxy_set_body "body two";
+        }
+
+        location /x1 {
+            add_header X-Accel-Redirect /p2;
+            return 204;
+        }
+
+        location /body {
+            add_header X-Body $request_body;
+            proxy_pass http://127.0.0.1:8080/empty;
+        }
+
+        location /empty {
+            return 204;
+        }
+    }
+}
+
+EOF
+
+$t->run();
+
+###############################################################################
+
+like(http_get('/'), qr/X-Body: body/, 'proxy_set_body');
+
+TODO: {
+local $TODO = 'not yet';
+
+like(http_get('/p1'), qr/X-Body: body two/, 'proxy_set_body twice');
+
+}
+
+###############################################################################