push sheeet

nixos/lib/testing/call-test.nix

@@ -0,0 +1,42 @@
+{
+  config,
+  extendModules,
+  lib,
+  ...
+}:
+let
+  inherit (lib) mkOption types;
+
+  unsafeGetAttrPosStringOr =
+    default: name: value:
+    let
+      p = builtins.unsafeGetAttrPos name value;
+    in
+    if p == null then default else p.file + ":" + toString p.line + ":" + toString p.column;
+
+in
+{
+  options = {
+    result = mkOption {
+      internal = true;
+      default = config;
+    };
+  };
+  config = {
+    # Docs: nixos/doc/manual/development/writing-nixos-tests.section.md
+    /**
+      See https://nixos.org/manual/nixos/unstable#sec-override-nixos-test
+    */
+    passthru.extend =
+      args@{
+        modules,
+        specialArgs ? { },
+      }:
+      (extendModules {
+        inherit specialArgs;
+        modules = map (lib.setDefaultModuleLocation (
+          unsafeGetAttrPosStringOr "<test.extend module>" "modules" args
+        )) modules;
+      }).config.test;
+  };
+}