fix(test): add env var cleanup in backup_control test

mattsu2020 · mattsu2020 · commit 1618d2f9e0f0 · 2025-12-27T20:55:16.000+09:00
Add unsafe env::remove_var(ENV_VERSION_CONTROL) after assertion in test to prevent test pollution and ensure environment isolation.
diff --git a/src/uucore/src/lib/features/backup_control.rs b/src/uucore/src/lib/features/backup_control.rs
@@ -683,6 +683,7 @@ mod tests {
         let result = determine_backup_mode(&matches).unwrap();
 
         assert_eq!(result, BackupMode::Numbered);
+        unsafe { env::remove_var(ENV_VERSION_CONTROL) };
     }
 
     #[test]

Original file line number	Diff line number	Diff line change
`@@ -683,6 +683,7 @@ mod tests {`
`683`	`683`	`let result = determine_backup_mode(&matches).unwrap();`
`684`	`684`
`685`	`685`	`assert_eq!(result, BackupMode::Numbered);`
	`686`	`+ unsafe { env::remove_var(ENV_VERSION_CONTROL) };`
`686`	`687`	`}`
`687`	`688`
`688`	`689`	`#[test]`