1 files changed, 36 insertions, 0 deletions
diff --git a/nixpkgs/lib/tests/misc.nix b/nixpkgs/lib/tests/misc.nix
index 36ddd186d7b..03eff4ce48b 100644
--- a/nixpkgs/lib/tests/misc.nix
+++ b/nixpkgs/lib/tests/misc.nix
@@ -102,6 +102,16 @@ runTests {
     expected = 9;
   };
 
+  testToHexString = {
+    expr = toHexString 250;
+    expected = "FA";
+  };
+
+  testToBaseDigits = {
+    expr = toBaseDigits 2 6;
+    expected = [ 1 1 0 ];
+  };
+
 # STRINGS
 
   testConcatMapStrings = {
@@ -532,4 +542,30 @@ runTests {
     name = "";
     expected = "unknown";
   };
+
+  testFreeformOptions = {
+    expr =
+      let
+        submodule = { lib, ... }: {
+          freeformType = lib.types.attrsOf (lib.types.submodule {
+            options.bar = lib.mkOption {};
+          });
+          options.bar = lib.mkOption {};
+        };
+
+        module = { lib, ... }: {
+          options.foo = lib.mkOption {
+            type = lib.types.submodule submodule;
+          };
+        };
+
+        options = (evalModules {
+          modules = [ module ];
+        }).options;
+
+        locs = filter (o: ! o.internal) (optionAttrSetToDocList options);
+      in map (o: o.loc) locs;
+    expected = [ [ "foo" ] [ "foo" "<name>" "bar" ] [ "foo" "bar" ] ];
+  };
+
 }