test: add key range assertion

Author: marvin-j97

src/key_range.rs

@@ -22,6 +22,8 @@ impl std::ops::Deref for KeyRange {
 }
 
 impl KeyRange {
+    #[must_use]
+    /// Creates a new key range
     pub fn new(range: (UserKey, UserKey)) -> Self {
         Self(range)
     }

src/lib.rs

@@ -119,3 +119,6 @@ pub use {
 
 #[doc(hidden)]
 pub use mock::{MockIndex, MockIndexWriter};
+
+#[doc(hidden)]
+pub use key_range::KeyRange;

tests/basic_kv.rs

@@ -1,5 +1,6 @@
+use std::sync::Arc;
 use test_log::test;
-use value_log::{Config, MockIndex, ValueHandle, ValueLog};
+use value_log::{Config, KeyRange, MockIndex, ValueHandle, ValueLog};
 
 #[test]
 fn basic_kv() -> value_log::Result<()> {
@@ -45,6 +46,11 @@ fn basic_kv() -> value_log::Result<()> {
         assert_eq!(items.len() as u64, segment.len());
         assert_eq!(0, segment.gc_stats.stale_items());
 
+        assert_eq!(
+            segment.meta.key_range,
+            KeyRange::new((Arc::new(*b"a"), Arc::new(*b"e")))
+        );
+
         assert_eq!(
             segment.len(),
             segment.scan().into_iter().flatten().count() as u64