| 1 | package testutils |
| 2 | |
| 3 | import ( |
| 4 | "bufio" |
| 5 | "fmt" |
| 6 | "net" |
| 7 | "net/netip" |
| 8 | "net/url" |
| 9 | "strings" |
| 10 | "sync" |
| 11 | |
| 12 | "github.com/multiformats/go-multiaddr" |
| 13 | manet "github.com/multiformats/go-multiaddr/net" |
| 14 | ) |
| 15 | |
| 16 | var ( |
| 17 | AlphabetEasy = []rune("abcdefghijklmnopqrstuvwxyz01234567890-_") |
| 18 | AlphabetHard = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890!@#$%^&*()-_+= ;.,<>'\"[]{}() ") |
| 19 | ) |
| 20 | |
| 21 | // StrCat takes a bunch of strings or string slices |
| 22 | // and concats them all together into one string slice. |
| 23 | // If an arg is not one of those types, this panics. |
| 24 | // If an arg is an empty string, it is dropped. |
| 25 | func StrCat(args ...any) []string { |
| 26 | res := make([]string, 0) |
| 27 | for _, a := range args { |
| 28 | if s, ok := a.(string); ok { |
| 29 | if s != "" { |
| 30 | res = append(res, s) |
| 31 | } |
| 32 | continue |
| 33 | } |
| 34 | if ss, ok := a.([]string); ok { |
| 35 | for _, s := range ss { |
| 36 | if s != "" { |
| 37 | res = append(res, s) |
| 38 | } |
| 39 | } |
| 40 | continue |
| 41 | } |
| 42 | panic(fmt.Sprintf("arg '%v' must be a string or string slice, but is '%T'", a, a)) |
| 43 | } |
| 44 | return res |
| 45 | } |
| 46 | |
| 47 | // PreviewStr returns a preview of s, which is a prefix for logging that avoids dumping a huge string to logs. |
| 48 | func PreviewStr(s string) string { |
| 49 | suffix := "..." |
| 50 | previewLength := 10 |
| 51 | if len(s) < previewLength { |
| 52 | previewLength = len(s) |
| 53 | suffix = "" |
| 54 | } |
| 55 | return s[0:previewLength] + suffix |
| 56 | } |
| 57 | |
| 58 | func SplitLines(s string) []string { |
| 59 | var lines []string |
| 60 | scanner := bufio.NewScanner(strings.NewReader(s)) |
| 61 | for scanner.Scan() { |
| 62 | lines = append(lines, scanner.Text()) |
| 63 | } |
| 64 | return lines |
| 65 | } |
| 66 | |
| 67 | // URLStrToMultiaddr converts a URL string like http://localhost:80 to a multiaddr. |
| 68 | func URLStrToMultiaddr(u string) multiaddr.Multiaddr { |
| 69 | parsedURL, err := url.Parse(u) |
| 70 | if err != nil { |
| 71 | panic(err) |
| 72 | } |
| 73 | addrPort, err := netip.ParseAddrPort(parsedURL.Host) |
| 74 | if err != nil { |
| 75 | panic(err) |
| 76 | } |
| 77 | tcpAddr := net.TCPAddrFromAddrPort(addrPort) |
| 78 | ma, err := manet.FromNetAddr(tcpAddr) |
| 79 | if err != nil { |
| 80 | panic(err) |
| 81 | } |
| 82 | return ma |
| 83 | } |
| 84 | |
| 85 | // ForEachPar invokes f in a new goroutine for each element of s and waits for all to complete. |
| 86 | func ForEachPar[T any](s []T, f func(T)) { |
| 87 | wg := sync.WaitGroup{} |
| 88 | wg.Add(len(s)) |
| 89 | for _, x := range s { |
| 90 | go func(x T) { |
| 91 | defer wg.Done() |
| 92 | f(x) |
| 93 | }(x) |
| 94 | } |
| 95 | wg.Wait() |
| 96 | } |