lc_garage/internal/modules/printer/service/csn_dll_test.go

package service

import (
	"reflect"
	"testing"
)

func TestParseCSNPortNamesUsesNulSeparatedBuffer(t *testing.T) {
	buffer := []byte("VID_0FE6&PID_811E#USB001\x00POS-Printer\x00\x00")
	got := parseCSNPortNames(buffer)
	want := []string{"VID_0FE6&PID_811E#USB001", "POS-Printer"}
	if !reflect.DeepEqual(got, want) {
		t.Fatalf("parsed names = %#v, want %#v", got, want)
	}
}

func TestParseCSNPortNamesStopsAtEmptyEntry(t *testing.T) {
	buffer := []byte("USB001\x00\x00stale-data")
	got := parseCSNPortNames(buffer)
	want := []string{"USB001"}
	if !reflect.DeepEqual(got, want) {
		t.Fatalf("parsed names = %#v, want %#v", got, want)
	}
}