From 1ef712c6a513978afeaa7ae8bf61ad8ba8c0fefa Mon Sep 17 00:00:00 2001
From: "Alexander \"Arav\" Andreev" <me@arav.top>
Date: Thu, 6 Jan 2022 04:21:08 +0400
Subject: [PATCH] [Makefile] Added a simple test that verifies output. Mostly
 as an example of use for test command.

---
 Makefile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index dcebd2a..cc12346 100644
--- a/Makefile
+++ b/Makefile
@@ -23,4 +23,8 @@ install:
 
 uninstall:
 	rm -f ${DESTDIR}usr/bin/${TARGET}
-	rm -f ${DESTDIR}usr/share/licenses/${TARGET}/LICENSE
\ No newline at end of file
+	rm -f ${DESTDIR}usr/share/licenses/${TARGET}/LICENSE
+
+test:
+	@echo -n "Does input \"3.68 120 30d\" gives 317.95? "
+	@test "${shell ./kwh-cost 3.68 120 30d}" = "317.95" && { echo -e "\e[32mYES\e[0m"; } || { echo -e "\e[31mNO\e[0m"; }
\ No newline at end of file