diff --git a/tests/test.sh b/tests/test.sh
new file mode 100755
index 0000000..c2f4cf0
--- /dev/null
+++ b/tests/test.sh
@@ -0,0 +1,17 @@
+true
+echo 'true =' $?
+
+false
+echo 'false =' $?
+
+false && true
+echo 'false && true =' $?
+
+true && false
+echo 'true && false =' $?
+
+true || false
+echo 'true || false =' $?
+
+false || true
+echo 'false || true =' $?