From c0caaa17be5335ab6993a6bb2bd6845dffedd420 Mon Sep 17 00:00:00 2001
From: Merkel Tranjes <140164174+rnkrtt@users.noreply.github.com>
Date: Wed, 8 Oct 2025 16:20:39 +0200
Subject: [PATCH] refactor: replace collect().is_empty() with next().is_none()
 in tests (#18902)

Co-authored-by: Alexey Shekhirin <5773434+shekhirin@users.noreply.github.com>
---
 crates/chain-state/src/in_memory.rs         | 3 +--
 crates/transaction-pool/src/pool/pending.rs | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/crates/chain-state/src/in_memory.rs b/crates/chain-state/src/in_memory.rs
index cd194db81e..dd78b6cf5f 100644
--- a/crates/chain-state/src/in_memory.rs
+++ b/crates/chain-state/src/in_memory.rs
@@ -1380,8 +1380,7 @@ mod tests {
     #[test]
     fn test_canonical_in_memory_state_canonical_chain_empty() {
         let state: CanonicalInMemoryState = CanonicalInMemoryState::empty();
-        let chain: Vec<_> = state.canonical_chain().collect();
-        assert!(chain.is_empty());
+        assert!(state.canonical_chain().next().is_none());
     }
 
     #[test]
diff --git a/crates/transaction-pool/src/pool/pending.rs b/crates/transaction-pool/src/pool/pending.rs
index 9bd1d092b4..317066137d 100644
--- a/crates/transaction-pool/src/pool/pending.rs
+++ b/crates/transaction-pool/src/pool/pending.rs
@@ -921,8 +921,7 @@ mod tests {
         assert!(removed.is_empty());
 
         // Verify that retrieving transactions from an empty pool yields nothing
-        let all_txs: Vec<_> = pool.all().collect();
-        assert!(all_txs.is_empty());
+        assert!(pool.all().next().is_none());
     }
 
     #[test]