db::test::TestData variable length

src/db.rs

@@ -321,10 +321,14 @@ mod test {
     #[derive(bincode::Encode, bincode::Decode, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
     struct TestData {
         num: u64,
+        test: String,
     }
 
     fn gen_data(count: usize) -> impl Iterator<Item = TestData> {
-        (0..count).into_iter().map(|i| TestData { num: i as u64 })
+        (0..count).into_iter().map(|i| TestData {
+            num: i as u64,
+            test: "test".repeat(i),
+        })
     }
 
     #[test]