diff --git a/tests/d3d12.c b/tests/d3d12.c
index 00005c4d..6abc1df6 100644
--- a/tests/d3d12.c
+++ b/tests/d3d12.c
@@ -5969,6 +5969,11 @@ static void test_map_resource(void)
         ok(hr == E_INVALIDARG, "Got unexpected hr %#x.\n", hr);
         ok(data == (void *)0xdeadbeef, "Pointer was modified %p.\n", data);
 
+        /* Texture on custom heaps can be mapped, but the address doesn't get disclosed to applications */
+        hr = ID3D12Resource_Map(resource, 0, NULL, NULL);
+        todo ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
+        ID3D12Resource_Unmap(resource, 0, NULL);
+
         ID3D12Resource_Release(resource);
     }