lib/tests: test filterAttrs

lib/tests/misc.nix

@@ -47,6 +47,7 @@ let
     evalModules
     extends
     filter
+    filterAttrs
     fix
     fold
     foldAttrs
@@ -1102,6 +1103,25 @@ runTests {
     };
   };
 
+  testFilterAttrs = {
+    expr = filterAttrs (n: v: n != "a" && (v.hello or false) == true) {
+      a.hello = true;
+      b.hello = true;
+      c = {
+        hello = true;
+        world = false;
+      };
+      d.hello = false;
+    };
+    expected = {
+      b.hello = true;
+      c = {
+        hello = true;
+        world = false;
+      };
+    };
+  };
+
   # code from example
   testFoldlAttrs = {
     expr = {