Add pre-initialize autovacuum integration test

Author: ddwalias

tests/integration/common.rs

@@ -87,6 +87,31 @@ impl TempDatabase {
         }
     }
 
+    pub fn new_with_autovacuum_full(sql: &str) -> Self {
+        let mut path = TempDir::new().unwrap().keep();
+        path.push("test.db");
+        {
+            let connection = rusqlite::Connection::open(&path).unwrap();
+            connection.pragma_update(None, "page_size", 4096).unwrap();
+            connection.pragma_update(None, "auto_vacuum", 1).unwrap();
+            connection.execute_batch("VACUUM;").unwrap();
+            connection.execute_batch(sql).unwrap();
+        }
+        let io: Arc<dyn turso_core::IO> = Arc::new(turso_core::PlatformIO::new().unwrap());
+        let db = Database::open_file_with_flags(
+            io.clone(),
+            path.to_str().unwrap(),
+            turso_core::OpenFlags::default(),
+            turso_core::DatabaseOpts::new()
+                .with_indexes(true)
+                .with_index_method(true),
+            None,
+        )
+        .unwrap();
+
+        Self { path, io, db }
+    }
+
     pub fn new_with_rusqlite(table_sql: &str) -> Self {
         let mut path = TempDir::new().unwrap().keep();
         path.push("test.db");

tests/integration/storage/auto_vacuum.rs

@@ -0,0 +1,29 @@
+use core_tester::common::{self, maybe_setup_tracing, rusqlite_integrity_check, TempDatabase};
+use turso_core::Row;
+
+#[test]
+
+fn test_autovacuum_pointer_map_integrity() -> anyhow::Result<()> {
+    let _ = env_logger::try_init();
+    maybe_setup_tracing();
+
+    let tmp_db = TempDatabase::new_with_autovacuum_full(
+        "CREATE TABLE seed_table(id INTEGER PRIMARY KEY, value TEXT);\
+         INSERT INTO seed_table VALUES (1, 'seed');",
+    );
+    let conn = tmp_db.connect_limbo();
+
+    common::run_query(&tmp_db, &conn, "CREATE TABLE third(a);")?;
+    for i in 1..=2000 {
+        common::run_query(&tmp_db, &conn, &format!("INSERT INTO third VALUES ({i});"))?;
+    }
+
+    common::run_query_on_row(&tmp_db, &conn, "PRAGMA integrity_check;", |row: &Row| {
+        let res = row.get::<String>(0).unwrap();
+        assert_eq!(res, "ok");
+    })?;
+
+    rusqlite_integrity_check(tmp_db.path.as_path())?;
+
+    Ok(())
+}

tests/integration/storage/mod.rs

@@ -1,2 +1,3 @@
+mod auto_vacuum;
 #[cfg(feature = "checksum")]
 mod checksum;