assertFalse(ctx.isEstablished());
        verify(this.mechContext, never()).isEstablished();
    }

    @Test
    @DisplayName("getNetbiosName returns null and does not call delegate")
    void testGetNetbiosName() {
        SpnegoContext ctx = newContext();
        // The mock setup is unnecessary since we never call it
        assertNull(ctx.getNetbiosName());
        verify(this.mechContext, never()).getNetbiosName();