package models

import "testing"

func TestResolveCPUSerialNumber(t *testing.T) {
	tests := []struct {
		name   string
		serial string
		ppin   string
		want   string
	}{
		{name: "serial has priority", serial: "CPU-SERIAL", ppin: "D46E5D6B1D3E40E1", want: "CPU-SERIAL"},
		{name: "PPIN fallback", ppin: " D46E5D6B1D3E40E1 ", want: "D46E5D6B1D3E40E1"},
		{name: "placeholder serial falls back", serial: "Unknown", ppin: "D44F8D6B9155EE0E", want: "D44F8D6B9155EE0E"},
		{name: "placeholder PPIN rejected", ppin: "N/A", want: ""},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := ResolveCPUSerialNumber(tt.serial, tt.ppin); got != tt.want {
				t.Fatalf("ResolveCPUSerialNumber(%q, %q) = %q, want %q", tt.serial, tt.ppin, got, tt.want)
			}
		})
	}
}