path: root/rpc/utils_test.go

// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package rpc

import (
    "strings"
    "testing"
)

func TestNewID(t *testing.T) {
    hexchars := "0123456789ABCDEFabcdef"
    for i := 0; i < 100; i++ {
        id := string(NewID())
        if !strings.HasPrefix(id, "0x") {
            t.Fatalf("invalid ID prefix, want '0x...', got %s", id)
        }

        id = id[2:]
        if len(id) == 0 || len(id) > 32 {
            t.Fatalf("invalid ID length, want len(id) > 0 && len(id) <= 32), got %d", len(id))
        }

        for i := 0; i < len(id); i++ {
            if strings.IndexByte(hexchars, id[i]) == -1 {
                t.Fatalf("unexpected byte, want any valid hex char, got %c", id[i])
            }
        }
    }
}