nixos/tests/nginx: add test variant for moreheaders module

nixos/tests/all-tests.nix

···
   nginx-globalredirect = handleTest ./nginx-globalredirect.nix {};
   nginx-http3 = handleTest ./nginx-http3.nix {};
   nginx-modsecurity = handleTest ./nginx-modsecurity.nix {};
+  nginx-moreheaders = handleTest ./nginx-moreheaders.nix {};
   nginx-njs = handleTest ./nginx-njs.nix {};
   nginx-proxyprotocol = handleTest ./nginx-proxyprotocol {};
   nginx-pubhtml = handleTest ./nginx-pubhtml.nix {};

nixos/tests/nginx-moreheaders.nix

···
+import ./make-test-python.nix {
+  name = "nginx-more-headers";
+
+  nodes = {
+    webserver = { pkgs, ... }: {
+      services.nginx = {
+        enable = true;
+
+        virtualHosts.test = {
+          locations = {
+            "/".return = "200 blub";
+            "/some" =  {
+              return = "200 blub";
+              extraConfig = ''
+                more_set_headers "Referrer-Policy: no-referrer";
+              '';
+            };
+          };
+          extraConfig = ''
+            more_set_headers "X-Powered-By: nixos";
+          '';
+        };
+      };
+    };
+  };
+
+  testScript = ''
+    webserver.wait_for_unit("nginx")
+    webserver.wait_for_open_port(80)
+
+    webserver.succeed("curl --fail --resolve test:80:127.0.0.1 --head --verbose http://test | grep -q \"X-Powered-By: nixos\"")
+    webserver.fail("curl --fail --resolve test:80:127.0.0.1 --head --verbose http://test | grep -q \"Referrer-Policy: no-referrer\"")
+
+    webserver.succeed("curl --fail --resolve test:80:127.0.0.1 --head --verbose http://test/some | grep -q \"X-Powered-By: nixos\"")
+    webserver.succeed("curl --fail --resolve test:80:127.0.0.1 --head --verbose http://test/some | grep -q \"Referrer-Policy: no-referrer\"")
+  '';
+}