diff --git a/test_conflict_set.py b/test_conflict_set.py
index 417dc40..7c6aaea 100644
--- a/test_conflict_set.py
+++ b/test_conflict_set.py
@@ -81,6 +81,17 @@ def test_decrease_capacity():
             cs.setOldestVersion(1)
 
 
+def test_large():
+    with DebugConflictSet() as cs:
+        end = 100000
+        for i in range(end):
+            cs.addWrites(1, write(i.to_bytes(8, byteorder="big")))
+        cs.addWrites(
+            2,
+            write((0).to_bytes(8, byteorder="big"), (end).to_bytes(8, byteorder="big")),
+        )
+
+
 if __name__ == "__main__":
     # budget "pytest" for ctest integration without pulling in a dependency. You can of course still use pytest in local development.
     import argparse