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package system
import (
"context"
"os"
"testing"
"github.com/docker/docker/api/types"
"github.com/docker/docker/integration/internal/container"
"github.com/docker/docker/testutil/daemon"
"gotest.tools/v3/assert"
"gotest.tools/v3/skip"
)
// hasSystemd checks whether the host was booted with systemd as its init
// system. Stolen from
// https://github.com/coreos/go-systemd/blob/176f85496f4e/util/util.go#L68
func hasSystemd() bool {
fi, err := os.Lstat("/run/systemd/system")
if err != nil {
return false
}
return fi.IsDir()
}
// TestCgroupDriverSystemdMemoryLimit checks that container
// memory limit can be set when using systemd cgroupdriver.
// https://github.com/moby/moby/issues/35123
func TestCgroupDriverSystemdMemoryLimit(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType == "windows")
skip.If(t, !hasSystemd())
t.Parallel()
d := daemon.New(t)
c := d.NewClientT(t)
d.StartWithBusybox(t, "--exec-opt", "native.cgroupdriver=systemd", "--iptables=false")
defer d.Stop(t)
const mem = int64(64 * 1024 * 1024) // 64 MB
ctx := context.Background()
ctrID := container.Create(ctx, t, c, func(ctr *container.TestContainerConfig) {
ctr.HostConfig.Resources.Memory = mem
})
defer c.ContainerRemove(ctx, ctrID, types.ContainerRemoveOptions{Force: true})
err := c.ContainerStart(ctx, ctrID, types.ContainerStartOptions{})
assert.NilError(t, err)
s, err := c.ContainerInspect(ctx, ctrID)
assert.NilError(t, err)
assert.Equal(t, s.HostConfig.Memory, mem)
}
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