test: update socket test to new behavior

src/lib.rs

@@ -520,7 +520,7 @@ pub fn copy_file(
                 Err(e)
             }
         }
-        Ok(_) => Ok(true)
+        Ok(_) => Ok(true),
     }
 }
 

tests/unit_tests.rs

@@ -138,10 +138,8 @@ fn test_filetypes(
             assert!(ftype.unwrap().is_symlink());
         }
         "socket" => {
-            assert!(dest_path.exists());
-            assert!(ftype.unwrap().is_file());
-            let contents = fs::read_to_string(&dest_path).unwrap();
-            assert!(contents.contains("marker for a file that was permanently deleted."));
+            // Socket files are not copied, so are instead simply deleted
+            assert!(!dest_path.exists());
         }
         _ => {}
     }