when(mockConfig.getLmHostsFileName()).thenReturn(null);

        NbtAddress result = lmhosts.getByName("TEST_HOST", mockContext);

        assertNull(result);
    }

    @Test
    void testGetByNameWithNonExistentFile() {
        // Test with non-existent file
        when(mockConfig.getLmHostsFileName()).thenReturn("/non/existent/lmhosts");

        NbtAddress result = lmhosts.getByName("TEST_HOST", mockContext);