From e89f93ff8509a783addd90ea70a10e048f66bcfd Mon Sep 17 00:00:00 2001
From: Jack Grigg <jack@z.cash>
Date: Sun, 20 Jun 2021 22:48:10 +0100
Subject: [PATCH] test: Add test case for popping from an empty history tree

---
 src/gtest/test_history.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/gtest/test_history.cpp b/src/gtest/test_history.cpp
index 537db2196..28ad5be15 100644
--- a/src/gtest/test_history.cpp
+++ b/src/gtest/test_history.cpp
@@ -174,6 +174,10 @@ TEST(History, EpochBoundaries) {
     view.PopHistoryNode(epoch2);
     EXPECT_EQ(view.GetHistoryLength(epoch2), 0);
 
+    // Trying to truncate an empty tree is a no-op
+    view.PopHistoryNode(epoch2);
+    EXPECT_EQ(view.GetHistoryLength(epoch2), 0);
+
 }
 
 TEST(History, GarbageMemoryHash) {