From ac406e652e2f7751e2248f030c1b5a5b615efdf4 Mon Sep 17 00:00:00 2001
From: Johannes 'fish' Ziemke <github@freigeist.org>
Date: Wed, 21 Dec 2016 11:51:53 +0100
Subject: [PATCH 1/2] Print log if error occurs

---
 end-to-end-test.sh | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/end-to-end-test.sh b/end-to-end-test.sh
index 8efd36bf..e68fd2ac 100755
--- a/end-to-end-test.sh
+++ b/end-to-end-test.sh
@@ -24,7 +24,6 @@ collectors=$(cat << COLLECTORS
   megacli
 COLLECTORS
 )
-
 cd "$(dirname $0)"
 
 port="$((10000 + (RANDOM % 10000)))"
@@ -74,11 +73,13 @@ fi
 echo $! > "${tmpdir}/node_exporter.pid"
 
 finish() {
-  if [ ${verbose} -ne 0 ]
+  if [ $? -ne 0 -o ${verbose} -ne 0 ]
   then
-    echo "LOG ====================="
-    cat "${tmpdir}/node_exporter.log"
-    echo "========================="
+    cat << EOF >&2
+LOG =====================
+$(cat "${tmpdir}/node_exporter.log")
+=========================
+EOF
   fi
 
   if [ ${update} -ne 0 ]

From 3b1ef14e7b3cced28e40f9c8a6a290f272198a06 Mon Sep 17 00:00:00 2001
From: Johannes 'fish' Ziemke <github@freigeist.org>
Date: Wed, 21 Dec 2016 12:00:32 +0100
Subject: [PATCH 2/2] Add end-to-end tests as default Makefile target

---
 Makefile | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index ef94cec9..a8542404 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,7 @@ DOCKER_IMAGE_NAME       ?= node-exporter
 DOCKER_IMAGE_TAG        ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD))
 
 
-all: format build test
+all: format build test test-e2e
 
 style:
 	@echo ">> checking code style"
@@ -31,6 +31,10 @@ test:
 	@echo ">> running tests"
 	@$(GO) test -short $(pkgs)
 
+test-e2e: build
+	@echo ">> running end-to-end tests"
+	./end-to-end-test.sh
+
 format:
 	@echo ">> formatting code"
 	@$(GO) fmt $(pkgs)
@@ -57,4 +61,4 @@ promu:
 		$(GO) get -u github.com/prometheus/promu
 
 
-.PHONY: all style format build test vet tarball docker promu
+.PHONY: all style format build test test-e2e vet tarball docker promu