From 4a8750d93aabe2b0e76f2336c256c8aa2b47943e Mon Sep 17 00:00:00 2001
From: "Chengen, Du" <chengen.du@canonical.com>
Date: Mon, 3 Oct 2022 10:07:08 +0800
Subject: [PATCH] tests/int: add a "update cpuset cpus range via v2 unified
 map" test

Add a test case for an issue fixed by the previous commit.
The env should has more than 8 core CPU to meet the test requirement.

Signed-off-by: Chengen, Du <chengen.du@canonical.com>
---
 tests/integration/helpers.bash |  7 +++++++
 tests/integration/update.bats  | 27 +++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/tests/integration/helpers.bash b/tests/integration/helpers.bash
index ee93c42b479..a9b70ffd887 100644
--- a/tests/integration/helpers.bash
+++ b/tests/integration/helpers.bash
@@ -457,6 +457,13 @@ function requires() {
 				skip_me=1
 			fi
 			;;
+		more_than_8_core)
+			local cpus
+			cpus=$(grep -c '^processor' /proc/cpuinfo)
+			if [ "$cpus" -le 8 ]; then
+				skip_me=1
+			fi
+			;;
 		*)
 			fail "BUG: Invalid requires $var."
 			;;
diff --git a/tests/integration/update.bats b/tests/integration/update.bats
index 1937006fd00..d2489009304 100644
--- a/tests/integration/update.bats
+++ b/tests/integration/update.bats
@@ -557,6 +557,33 @@ EOF
 	check_systemd_value "AllowedMemoryNodes" 1
 }
 
+@test "update cpuset cpus range via v2 unified map" {
+	# This test assumes systemd >= v244
+	[ $EUID -ne 0 ] && requires rootless_cgroup
+	requires systemd cgroups_v2 more_than_8_core cgroups_cpuset
+
+	update_config ' .linux.resources.unified |= {
+				"cpuset.cpus": "0-5",
+			}'
+	runc run -d --console-socket "$CONSOLE_SOCKET" test_update
+	[ "$status" -eq 0 ]
+
+	# check that the initial value was properly set
+	check_systemd_value "AllowedCPUs" "0-5"
+
+	runc update -r - test_update <<EOF
+{
+  "unified": {
+    "cpuset.cpus": "5-8"
+  }
+}
+EOF
+	[ "$status" -eq 0 ]
+
+	# check the updated systemd unit property, the value should not be affected by byte order
+	check_systemd_value "AllowedCPUs" "5-8"
+}
+
 @test "update rt period and runtime" {
 	[ $EUID -ne 0 ] && requires rootless_cgroup
 	requires cgroups_v1 cgroups_rt no_systemd