String url = "smb1://user:pass@server/share/file.txt";
            SmbFile smbFile = new SmbFile(url, mockAuth);
            assertNotNull(smbFile);
            assertEquals(mockAuth, smbFile.getPrincipal());
            assertEquals("server", smbFile.getServer());
            assertEquals("share", smbFile.getShare());
        }

        @Test
        public void testConstructorWithMalformedUrl() {