lib/test/modules.sh: Test deferredModule error location file

lib/tests/modules.sh

@@ -194,8 +194,11 @@ checkConfigOutput '^"submodule"$' options.submodule.type.description ./declare-s
 ## Paths should be allowed as values and work as expected
 checkConfigOutput '^true$' config.submodule.enable ./declare-submoduleWith-path.nix
 
-## Deferred module
+## deferredModule
+# default module is merged into nodes.foo
 checkConfigOutput '"beta"' config.nodes.foo.settingsDict.c ./deferred-module.nix
+# errors from the default module are reported with accurate location
+checkConfigError 'In `default from the-file-that-contains-the-bad-config.nix'\'': "bogus"' config.nodes.foo.bottom ./deferred-module.nix
 
 # Check the file location information is propagated into submodules
 checkConfigOutput the-file.nix config.submodule.internalFiles.0 ./submoduleFiles.nix

lib/tests/modules/deferred-module.nix

@@ -1,7 +1,7 @@
 { lib, ... }:
 let
   inherit (lib) types mkOption setDefaultModuleLocation;
-  inherit (types) deferredModule lazyAttrsOf submodule str raw;
+  inherit (types) deferredModule lazyAttrsOf submodule str raw enum;
 in
 {
   imports = [
@@ -28,6 +28,7 @@ in
       _file = "default-1.nix";
       default = { config, ... }: {
         options.settingsDict = lib.mkOption { type = lazyAttrsOf str; default = {}; };
+        options.bottom = lib.mkOption { type = enum []; };
       };
     }
 
@@ -43,6 +44,11 @@ in
       nodes.foo.settingsDict.b = "beta";
     }
 
+    {
+      _file = "the-file-that-contains-the-bad-config.nix";
+      default.bottom = "bogus";
+    }
+
     {
       _file = "nodes-foo-c-is-a.nix";
       nodes.foo = { config, ... }: {