engine.close();
    }

    // ===== Close Lifecycle Tests =====

    /**
     * Test that close() can be called multiple times without error
     */
    @Test
    public void test_close_idempotent() {
        final GroovyEngine engine = new GroovyEngine();
        engine.evaluate("return 1", new HashMap<>());
        engine.close();
        engine.close(); // second close should not throw
    }

        assertEquals("remove", exception.getMessage());
    }

    @Test
    @DisplayName("Close should be idempotent")
    void testClose_Idempotent() throws Exception {
        // Given: A valid iterator setup
        when(locator.getType()).thenReturn(SmbConstants.TYPE_WORKGROUP);
        when(locator.getURL()).thenReturn(createSmbURL("smb://"));

    }

    /**
     * Test multiple close() calls (idempotency)
     */
    @Test
    @DisplayName("Test close() method is idempotent")
    public void testCloseIdempotent() {
        NtlmPasswordAuthenticator auth = new NtlmPasswordAuthenticator("user", "IdempotentPass123!");

        assertFalse(auth.isClosed());

        // Close multiple times
        auth.close();