2 files changed, 12 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index bfb7d4e..1f7c8dd 100755
--- a/Makefile
+++ b/Makefile
@@ -46,6 +46,9 @@ $(BUILD_DIR): tools
 run: $(BIN)
         ./$(BIN) -i
 
+tests: $(BIN)
+        ./$(BIN) examples/arithmetic.bdl | diff tests/arithmetic_expected.txt -
+
 # Remove build directory.
 clean:
         rm -rf $(BUILD_DIR)
diff --git a/tests/arithmetic_expected.txt b/tests/arithmetic_expected.txt
new file mode 100644
index 0000000..590166a
--- /dev/null
+++ b/tests/arithmetic_expected.txt
@@ -0,0 +1,9 @@
+110
+6
+25
+-40
+70
+-66
+9
+1
+44000