fix level scope index

[crwen]

LevelStream::new accepts a start index and a end index, which are both closed. So this_level_scopes should return a right-closed index https://github.com/tonbo-io/tonbo/blob/b9b02a83ecca3513f728ca7a71052a7b9ec7c0ef/src/stream/level.rs#L76

[KKould]

how can we write a unit test to test this problem?

[crwen]

how can we write a unit test to test this problem?

Here's the code that'll panic:

test code

```rust #[tokio::test] pub(crate) async fn major_panic() { let temp_dir = TempDir::new().unwrap(); let mut option = DbOption::from(temp_dir.path()); option.major_threshold_with_sst_size = 1; option.level_sst_magnification = 1; TokioExecutor::create_dir_all(&option.wal_dir_path()).await.unwrap(); let table_gen0 = FileId::new(); let table_gen1 = FileId::new(); let mut records0 = vec![]; let mut records1 = vec![]; for i in 0..10 { let record = ( LogType::Full, Test { vstring: i.to_string(), vu32: i, vbool: Some(true), }, 0.into(), ); if i < 5 { records0.push(record); } else { records1.push(record); } } build_parquet_table::(&option, table_gen0, records0) .await .unwrap(); build_parquet_table::(&option, table_gen1, records1) .await .unwrap(); let option = Arc::new(option); let (sender, _) = bounded(1); let mut version = Version::::new( option.clone(), sender, Arc::new(AtomicU32::default()), ); version.level_slice[0].push(Scope { min: 0.to_string(), max: 4.to_string(), gen: table_gen0, wal_ids: None, }); version.level_slice[1].push(Scope { min: 5.to_string(), max: 9.to_string(), gen: table_gen1, wal_ids: None, }); let mut version_edits = Vec::new(); let min = 6.to_string(); let max = 9.to_string(); Compactor::::major_compaction( &version, &option, &min, &max, &mut version_edits, &mut vec![], ) .await .unwrap(); } ```

[KKould]

how can we write a unit test to test this problem?

Here's the code that'll panic:

Thank you very much for your contribution to the stability of tonbo! I have added this unit test to PR: https://github.com/tonbo-io/tonbo/pull/140