diff --git a/tests/bonsai/rpn.mk b/tests/bonsai/rpn.mk
new file mode 100755
index 0000000..2ac1243
--- /dev/null
+++ b/tests/bonsai/rpn.mk
@@ -0,0 +1,43 @@
+# Copyright (c) 2024 Emma Tebibyte <emma@tebibyte.media>
+# SPDX-License-Identifier: FSFAP
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice and this
+# notice are preserved.  This file is offered as-is, without any warranty.
+
+.PHONY: rpn_tests
+rpn_tests: rpn_help rpn_add
+
+.PHONY: rpn_help
+rpn_help: $(BIN)/rpn
+	! $(BIN)/rpn -h
+
+.PHONY: rpn_add
+rpn_add: $(BIN)/rpn
+	test "$$($(BIN)/rpn 1 2 +)" -eq 3
+	test "$$($(BIN)/rpn 0.2 0.1 +)" = 0.3
+
+.PHONY: rpn_sub
+rpn_sub: $(BIN)/rpn
+	test "$$($(BIN)/rpn 23 5 -)" -eq 18
+	test "$$($(BIN)/rpn 0.3 0.1)" = 0.2
+
+.PHONY: rpn_mul
+rpn_mul: $(BIN)/rpn
+	test "$$($(BIN)/rpn 1.2 3 '*')" = 3.6
+	test "$$($(BIN)/rpn 0 3 '*')" -eq 0
+
+.PHONY: rpn_div
+rpn_div: $(BIN)/rpn
+	test "$$($(BIN)/rpn 12 5 /)" = 2.4
+	test "$$($(BIN)/rpn 3 0 /)" -eq inf
+
+.PHONY: rpn_mod
+rpn_mod: $(BIN)/rpn
+	test "$$($(BIN)/rpn 12 5 %)" -eq 2
+	test "$$($(BIN)/rpn 9 4 %)" -eq 1
+
+.PHONY: rpn_flr
+rpn_flr: $(BIN)/rpn
+	test "$$($(BIN)/rpn 12 5 //)" -eq 2
+	test "$$($(BIN)/rpn 9 4 //)" -eq 2