1 files changed, 69 insertions, 0 deletions
diff --git a/src/test/timeoffsets_tests.cpp b/src/test/timeoffsets_tests.cpp
new file mode 100644
index 0000000000..008f1a9db9
--- /dev/null
+++ b/src/test/timeoffsets_tests.cpp
@@ -0,0 +1,69 @@
+// Copyright (c) 2024-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+//
+
+#include <node/timeoffsets.h>
+#include <test/util/setup_common.h>
+
+#include <boost/test/unit_test.hpp>
+
+#include <chrono>
+#include <vector>
+
+using namespace std::chrono_literals;
+
+static void AddMulti(TimeOffsets& offsets, const std::vector<std::chrono::seconds>& to_add)
+{
+    for (auto offset : to_add) {
+        offsets.Add(offset);
+    }
+}
+
+BOOST_FIXTURE_TEST_SUITE(timeoffsets_tests, BasicTestingSetup)
+
+BOOST_AUTO_TEST_CASE(timeoffsets)
+{
+    TimeOffsets offsets{};
+    BOOST_CHECK(offsets.Median() == 0s);
+
+    AddMulti(offsets, {{0s, -1s, -2s, -3s}});
+    // median should be zero for < 5 offsets
+    BOOST_CHECK(offsets.Median() == 0s);
+
+    offsets.Add(-4s);
+    // we now have 5 offsets: [-4, -3, -2, -1, 0]
+    BOOST_CHECK(offsets.Median() == -2s);
+
+    AddMulti(offsets, {4, 5s});
+    // we now have 9 offsets: [-4, -3, -2, -1, 0, 5, 5, 5, 5]
+    BOOST_CHECK(offsets.Median() == 0s);
+
+    AddMulti(offsets, {41, 10s});
+    // the TimeOffsets is now at capacity with 50 offsets, oldest offsets is discarded for any additional offset
+    BOOST_CHECK(offsets.Median() == 10s);
+
+    AddMulti(offsets, {25, 15s});
+    // we now have 25 offsets of 10s followed by 25 offsets of 15s
+    BOOST_CHECK(offsets.Median() == 15s);
+}
+
+static bool IsWarningRaised(const std::vector<std::chrono::seconds>& check_offsets)
+{
+    TimeOffsets offsets{};
+    AddMulti(offsets, check_offsets);
+    return offsets.WarnIfOutOfSync();
+}
+
+
+BOOST_AUTO_TEST_CASE(timeoffsets_warning)
+{
+    BOOST_CHECK(IsWarningRaised({{-60min, -40min, -30min, 0min, 10min}}));
+    BOOST_CHECK(IsWarningRaised({5, 11min}));
+
+    BOOST_CHECK(!IsWarningRaised({4, 60min}));
+    BOOST_CHECK(!IsWarningRaised({100, 3min}));
+}
+
+
+BOOST_AUTO_TEST_SUITE_END()