From f766bb37e5ea21695dce1699e1108aaf67935ebc Mon Sep 17 00:00:00 2001
From: Niels de Vos <ndevos@redhat.com>
Date: Mon, 20 Apr 2020 11:46:01 +0200
Subject: [PATCH] tests: fail when "make mod-check" detects a modified go.mod
 file

`go mod verify` does not fail when all moduled under vendor/ are
updated. However it does update `go.mod` in case it does not reflect the
downloaded versions.

By adding this additional verification in `make mod-check`, future
updates to vendor/ will require a correct go.mod as well.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
(cherry picked from commit 22c0baa4b09e60f5964cb2a1f1cc928b89c43409)
---
 Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index beafa9d02..99d9a9dc6 100644
--- a/Makefile
+++ b/Makefile
@@ -55,7 +55,8 @@ go-test:
 	./scripts/test-go.sh
 
 mod-check:
-	go mod verify
+	@echo 'running: go mod verify'
+	@go mod verify && [ "$(shell sha512sum go.mod)" = "`sha512sum go.mod`" ] || ( echo "ERROR: go.mod was modified by 'go mod verify'" && false )
 
 static-check:
 	./scripts/lint-go.sh