// When
        messageBlock.setUid(uid);

        // Then
        verify(messageBlock).setUid(uid);
    }

    @Test
    @DisplayName("Test setUid with boundary values")
    void testSetUidWithBoundaryValues() {
        // Test with various uid values
        int[] uids = { 0, 1, Integer.MAX_VALUE, Integer.MIN_VALUE };

        for (int uid : uids) {
            doNothing().when(messageBlock).setUid(uid);