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1 files changed, 3 insertions, 0 deletions

diff --git a/trade_queue.py b/trade_queue.py
index 4cfc9da..a0dfc47 100644
--- a/trade_queue.py
+++ b/trade_queue.py
@@ -23,6 +23,9 @@ class FIFOQueue:
         return len(self.__queue)
 
     def get_copy(self) -> List[Trade]:
+        """
+        Helper for unit tests, to check internal state.
+        """
         return [t for t in self.__queue]
 
     def add(self, amount: float | Decimal, total_cost: float | Decimal, date: str) -> None: