67e26be2d9
The public tree and its history contain only the listed paths. Earlier projection history remains preserved internally. Source-Sha: 913fde029b935671833254797f0f20f1eb9fabba Policy-Sha: 913fde029b935671833254797f0f20f1eb9fabba Tree-Digest: 180ae530c1058a2a5c89837bdce2d323ae83e669e38590ca72e75b8d92b7262f
83 lines
2.6 KiB
Go
83 lines
2.6 KiB
Go
package system
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// machine_id_arm_test.go — DEVICE-002: ARM machine ID fallback.
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//
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// ARM devices (phones, SBCs) have no /sys/class/dmi/id/product_uuid. The
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// fallback chain gains two hardware-bound sources before the weak hostname
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// fallback: device-tree model + /etc/machine-id, then /proc/cpuinfo Serial.
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import (
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"os"
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"path/filepath"
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"testing"
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)
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func writeTempFile(t *testing.T, dir, name, content string) string {
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t.Helper()
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path := filepath.Join(dir, name)
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if err := os.WriteFile(path, []byte(content), 0o644); err != nil {
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t.Fatalf("write %s: %v", name, err)
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}
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return path
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}
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func TestDeviceTreeMachineIDCombinesModelAndMachineID(t *testing.T) {
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dir := t.TempDir()
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// device-tree model strings are NUL-terminated
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model := writeTempFile(t, dir, "model", "Google Pixel 3\x00")
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machineID := writeTempFile(t, dir, "machine-id", "abcdef0123456789abcdef0123456789\n")
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got := deviceTreeMachineIDFrom(model, machineID)
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want := "Google Pixel 3:abcdef0123456789abcdef0123456789"
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if got != want {
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t.Errorf("[ERROR] [agent] [system] got %q, want %q", got, want)
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}
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}
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func TestDeviceTreeMachineIDWithoutMachineIDIsHardwareBound(t *testing.T) {
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dir := t.TempDir()
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model := writeTempFile(t, dir, "model", "Raspberry Pi 4 Model B\x00")
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got := deviceTreeMachineIDFrom(model, filepath.Join(dir, "missing"))
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want := "Raspberry Pi 4 Model B:arm-device"
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if got != want {
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t.Errorf("[ERROR] [agent] [system] got %q, want %q", got, want)
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}
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}
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func TestDeviceTreeMachineIDAbsentOnX86(t *testing.T) {
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dir := t.TempDir()
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if got := deviceTreeMachineIDFrom(filepath.Join(dir, "missing"), filepath.Join(dir, "machine-id")); got != "" {
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t.Errorf("[ERROR] [agent] [system] expected empty on missing device-tree, got %q", got)
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}
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}
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func TestARMSerialParsed(t *testing.T) {
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dir := t.TempDir()
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cpuinfo := writeTempFile(t, dir, "cpuinfo",
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"processor\t: 0\nHardware\t: Qualcomm Technologies, Inc SDM845\nSerial\t\t: 0000000012345abc\n")
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got := armSerialFrom(cpuinfo)
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want := "arm-serial:0000000012345abc"
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if got != want {
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t.Errorf("[ERROR] [agent] [system] got %q, want %q", got, want)
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}
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}
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func TestARMSerialRejectsAllZero(t *testing.T) {
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dir := t.TempDir()
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cpuinfo := writeTempFile(t, dir, "cpuinfo", "Serial\t\t: 0000000000000000\n")
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if got := armSerialFrom(cpuinfo); got != "" {
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t.Errorf("[ERROR] [agent] [system] all-zero serial must be rejected, got %q", got)
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}
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}
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func TestARMSerialAbsent(t *testing.T) {
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dir := t.TempDir()
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cpuinfo := writeTempFile(t, dir, "cpuinfo", "processor\t: 0\nmodel name\t: Intel Xeon\n")
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if got := armSerialFrom(cpuinfo); got != "" {
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t.Errorf("[ERROR] [agent] [system] expected empty without Serial line, got %q", got)
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}
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}
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