tests: Add a test to verify the distro matches expectations

Verify that the container image has an /etc/os-release that matches what
we would expect for the distro specified when building the image.

Signed-off-by: Randy Witt <randy.e.witt@intel.com>

tests/distro-check.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+
+# distro-check.sh
+#
+# Copyright (C) 2020 Intel Corporation
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# Verify that the distro inside the container matches the one we expect based
+# on the build
+
+ENGINE_CMD=$1
+IMAGE=$2
+BASE_DISTRO="$3"
+
+declare -A distros
+
+distros["centos-7"]="CentOS Linux 7 (Core)"
+distros["debian-9"]="Debian GNU/Linux 9 (stretch)"
+distros["debian-10"]="Debian GNU/Linux 10 (buster)"
+distros["fedora-28"]="Fedora 28 (Twenty Eight)"
+distros["fedora-29"]="Fedora 29 (Container Image)"
+distros["fedora-30"]="Fedora 30 (Container Image)"
+distros["opensuse-15.0"]="openSUSE Leap 15.0"
+distros["opensuse-15.1"]="openSUSE Leap 15.1"
+distros["ubuntu-16.04"]="Ubuntu 16.04"
+distros["ubuntu-18.04"]="Ubuntu 18.04"
+distros["ubuntu-19.04"]="Ubuntu 19.04"
+
+# If the distro is unknown it is a failure
+if [ "${distros[${BASE_DISTRO}]}" = "" ]; then
+    echo "Unknown distro \"${BASE_DISTRO}\""
+    exit 1
+fi
+
+${ENGINE_CMD} run --rm -t $IMAGE grep "${distros[${BASE_DISTRO}]}" /etc/os-release &> /dev/null
+RET=$?
+if [ $RET != 0 ]; then
+    echo "Distro check failed. Outputting /etc/os-release:"
+    ${ENGINE_CMD} run --rm -t $IMAGE cat /etc/os-release
+    echo ""
+fi
+exit $RET

tests/runtests.sh

@@ -102,4 +102,13 @@ if [ ${RET} != 0 ]; then
 fi
 rm $LOCAL_WDIR -rf
 
+
+echo Running Distro Check Test
+./distro-check.sh ${ENGINE_CMD} ${IMAGE} ${BASE_DISTRO}
+RET=$?
+if [ ${RET} != 0 ]; then
+    echo "Test \"Distro Check\" failed"
+    exit ${RET}
+fi
+
 echo "All tests PASSED"