1 files changed, 19 insertions, 0 deletions
diff --git a/tests/plugins/plugintest.cc b/tests/plugins/plugintest.cc
new file mode 100644
index 000000000000..8da15ebabd7d
--- /dev/null
+++ b/tests/plugins/plugintest.cc
@@ -0,0 +1,19 @@
+#include "globals.hh"
+#include "primops.hh"
+
+using namespace nix;
+
+static BaseSetting<bool> settingSet{false, "setting-set",
+        "Whether the plugin-defined setting was set"};
+
+static RegisterSetting rs(&settingSet);
+
+static void prim_anotherNull (EvalState & state, const Pos & pos, Value ** args, Value & v)
+{
+    if (settingSet)
+        mkNull(v);
+    else
+        mkBool(v, false);
+}
+
+static RegisterPrimOp rp("anotherNull", 0, prim_anotherNull);