From 96c57048f71fa15032375d4ff4a900311c214d49 Mon Sep 17 00:00:00 2001
From: Nick Porter <nick@portercomputing.co.uk>
Date: Wed, 30 Jul 2025 14:15:16 +0100
Subject: [PATCH] Add test of %rest() receiving a failure HTTP status code

---
 scripts/ci/openresty-setup.sh           |  4 ++++
 scripts/ci/openresty/fail.lua           |  5 +++++
 src/tests/modules/rest/rest_xlat.unlang | 21 +++++++++++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 scripts/ci/openresty/fail.lua

diff --git a/scripts/ci/openresty-setup.sh b/scripts/ci/openresty-setup.sh
index c97d81f4eb..c86783ddfe 100755
--- a/scripts/ci/openresty-setup.sh
+++ b/scripts/ci/openresty-setup.sh
@@ -102,6 +102,10 @@ http {
 	location ~ ^/delay(.*)$ {
 	    content_by_lua_file  ${APIDIR}/delay-api.lua;
 	}
+
+	location ~ ^/fail(.*)$ {
+	    content_by_lua_file  ${APIDIR}/fail.lua;
+	}
     }
 
     server {
diff --git a/scripts/ci/openresty/fail.lua b/scripts/ci/openresty/fail.lua
new file mode 100644
index 0000000000..76a5025e0c
--- /dev/null
+++ b/scripts/ci/openresty/fail.lua
@@ -0,0 +1,5 @@
+-- API which will return code 400 with a JSON formatted error message
+
+ngx.status = ngx.HTTP_BAD_REQUEST
+ngx.say('{"error": "Invalid request"}')
+return ngx.exit(ngx.HTTP_BAD_REQUEST)
diff --git a/src/tests/modules/rest/rest_xlat.unlang b/src/tests/modules/rest/rest_xlat.unlang
index e96b7689c5..ca452b0502 100644
--- a/src/tests/modules/rest/rest_xlat.unlang
+++ b/src/tests/modules/rest/rest_xlat.unlang
@@ -212,4 +212,25 @@ if (!(Module-Failure-Message == "curl request failed: Timeout was reached (28)")
 	test_fail
 }
 
+# Call an endpoint which will return a "failure" status code
+result_string := %rest('GET', "http://%{server_host}:%uri.safe(%{server_port})/fail")
+
+if (REST-HTTP-Status-Code != 400) {
+	test_fail
+}
+
+# The output should not be returned
+if (result_string) {
+	test_fail
+}
+
+# Server output will be in REST-HTTP-Body (this endpoint returns JSON)
+map json REST-HTTP-Body {
+	test_string := '$.error'
+}
+
+if (test_string != 'Invalid request') {
+	test_fail
+}
+
 test_pass
-- 
2.47.2