diff --git a/hosts/ocaml/bin/run_tests.ml b/hosts/ocaml/bin/run_tests.ml
index 8e4ff395..656f1731 100644
--- a/hosts/ocaml/bin/run_tests.ml
+++ b/hosts/ocaml/bin/run_tests.ml
@@ -1559,6 +1559,10 @@ let run_spec_tests env test_files =
     match args with
     | [String "document"] -> mock_document
     | [String "window"] -> Nil  (* self-referential, not needed for tests *)
+    | [String "console"] ->
+      let d = Hashtbl.create 4 in
+      Hashtbl.replace d "__mock_type" (String "console");
+      Dict d
     | [String name] ->
       (* Check SX env for globally defined things like "tmp" used in HS tests *)
       (try Sx_types.env_get env name with _ -> Nil)
@@ -1798,6 +1802,10 @@ let run_spec_tests env test_files =
             | _ -> String "")
          | _ -> Nil)
 
+      else if mt = "console" then
+        (* console.log/debug/error — no-op in tests *)
+        Nil
+
       else
         (* Element methods *)
         (match m with
@@ -2206,6 +2214,10 @@ let run_spec_tests env test_files =
   load_module "runtime.sx" hs_dir;
   load_module "integration.sx" hs_dir;
   load_module "htmx.sx" hs_dir;
+  (* Override console-log to avoid str on circular mock DOM refs *)
+  ignore (Sx_types.env_bind env "console-log" (NativeFn ("console-log", fun _ -> Nil)));
+  ignore (Sx_types.env_bind env "console-debug" (NativeFn ("console-debug", fun _ -> Nil)));
+  ignore (Sx_types.env_bind env "console-error" (NativeFn ("console-error", fun _ -> Nil)));
   (* eval-hs: compile hyperscript source to SX and evaluate it.
      Used by eval-only behavioral tests (comparisonOperator, mathOperator, etc.) *)
   ignore (Sx_types.env_bind env "eval-hs" (NativeFn ("eval-hs", fun args ->