package netbox

import "testing"

func TestFormatHWID(t *testing.T) {
	tests := []struct {
		n    int
		want string
	}{
		{1, "HW-00001"},
		{42, "HW-00042"},
		{99999, "HW-99999"},
	}
	for _, tt := range tests {
		got := formatHWID(tt.n)
		if got != tt.want {
			t.Errorf("formatHWID(%d) = %q, want %q", tt.n, got, tt.want)
		}
	}
}

func TestParseHWID(t *testing.T) {
	tests := []struct {
		s       string
		want    int
		wantErr bool
	}{
		{"HW-00001", 1, false},
		{"HW-00042", 42, false},
		{"HW-99999", 99999, false},
		{"", 0, true},
		{"not-a-hw-id", 0, true},
		{"HW-0001", 0, true},   // only 4 digits — invalid
		{"hw-00001", 0, true},  // lowercase — invalid
	}
	for _, tt := range tests {
		got, err := parseHWID(tt.s)
		if tt.wantErr && err == nil {
			t.Errorf("parseHWID(%q): expected error, got nil", tt.s)
		}
		if !tt.wantErr && err != nil {
			t.Errorf("parseHWID(%q): unexpected error: %v", tt.s, err)
		}
		if !tt.wantErr && got != tt.want {
			t.Errorf("parseHWID(%q) = %d, want %d", tt.s, got, tt.want)
		}
	}
}