scoreUpdater.addScoreBooster(booster);

        String result = scoreUpdater.execute();
        // NullPointerException message should be captured
        assertTrue(result.contains("null") || result.contains("NullPointer"));
    }

    // Test with negative priority
    public void test_addScoreBooster_negativePriority() {
        PriorityTrackingBooster booster1 = new PriorityTrackingBooster(-1, 100L);

        // Arrange - use non-transact, non-call pipe type
        SmbPipeHandleImpl handle = newHandleWithBasicStubs(SmbPipeResource.PIPE_TYPE_RDWR, "\\\\pipe\\\\x");

        // Setup for ensureOpen to avoid NullPointer
        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(false); // Set to SMB1 to avoid SMB2 ioctl path