fix the test_restore_by_datetime test

Signed-off-by: Nikolay Ulmasov <[email protected]>

crates/deltalake-core/tests/command_restore.rs

@@ -6,6 +6,7 @@ use arrow_schema::{DataType as ArrowDataType, Field};
 use chrono::{DateTime, NaiveDateTime, TimeZone, Utc};
 use deltalake_core::kernel::{DataType, PrimitiveType, StructField};
 use deltalake_core::protocol::SaveMode;
+use deltalake_core::storage::commit_uri_from_version;
 use deltalake_core::{DeltaOps, DeltaTable};
 use rand::Rng;
 use std::error::Error;
@@ -117,9 +118,15 @@ async fn test_restore_by_version() -> Result<(), Box<dyn Error>> {
 #[tokio::test]
 async fn test_restore_by_datetime() -> Result<(), Box<dyn Error>> {
     let context = setup_test().await?;
-    let mut table = context.table;
-    let history = table.history(Some(10)).await?;
-    let timestamp = history.get(1).unwrap().timestamp.unwrap();
+    let table = context.table;
+    let version = 1;
+
+    // The way we obtain a timestamp for a version will have to change when/if we start using CommitInfo for timestamps
+    let meta = table
+        .object_store()
+        .head(&commit_uri_from_version(version))
+        .await?;
+    let timestamp = meta.last_modified.timestamp_millis();
     let naive = NaiveDateTime::from_timestamp_millis(timestamp).unwrap();
     let datetime: DateTime<Utc> = Utc.from_utc_datetime(&naive);