1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/settings_tests.cpp b/src/test/settings_tests.cpp
index 235420e6ac..45644834a5 100644
--- a/src/test/settings_tests.cpp
+++ b/src/test/settings_tests.cpp
@@ -46,6 +46,19 @@ BOOST_AUTO_TEST_CASE(Simple)
     CheckValues(settings2, R"("val2")", R"(["val2","val3"])");
 }
 
+// Confirm that a high priority setting overrides a lower priority setting even
+// if the high priority setting is null. This behavior is useful for a high
+// priority setting source to be able to effectively reset any setting back to
+// its default value.
+BOOST_AUTO_TEST_CASE(NullOverride)
+{
+    util::Settings settings;
+    settings.command_line_options["name"].push_back("value");
+    BOOST_CHECK_EQUAL(R"("value")", GetSetting(settings, "section", "name", false, false).write().c_str());
+    settings.forced_settings["name"] = {};
+    BOOST_CHECK_EQUAL(R"(null)", GetSetting(settings, "section", "name", false, false).write().c_str());
+}
+
 // Test different ways settings can be merged, and verify results. This test can
 // be used to confirm that updates to settings code don't change behavior
 // unintentionally.