Merge pull request #131205 from Ma27/showdefs-overflow

lib/modules: improve errors for `options`/`config`-mixups

1 files changed, 19 insertions, 0 deletions

diff --git a/lib/tests/misc.nix b/lib/tests/misc.nix
index 4b2e5afc1d609..00eeaa2a77d79 100644
--- a/lib/tests/misc.nix
+++ b/lib/tests/misc.nix
@@ -529,6 +529,25 @@ runTests {
     };
   };
 
+  testToPrettyLimit =
+    let
+      a.b = 1;
+      a.c = a;
+    in {
+      expr = generators.toPretty { } (generators.withRecursion { throwOnDepthLimit = false; depthLimit = 2; } a);
+      expected = "{\n  b = 1;\n  c = {\n    b = \"<unevaluated>\";\n    c = {\n      b = \"<unevaluated>\";\n      c = \"<unevaluated>\";\n    };\n  };\n}";
+    };
+
+  testToPrettyLimitThrow =
+    let
+      a.b = 1;
+      a.c = a;
+    in {
+      expr = (builtins.tryEval
+        (generators.toPretty { } (generators.withRecursion { depthLimit = 2; } a))).success;
+      expected = false;
+    };
+
   testToPrettyMultiline = {
     expr = mapAttrs (const (generators.toPretty { })) rec {
       list = [ 3 4 [ false ] ];