github.com/zjj1991/quorum@v0.0.0-20190524123704-ae4b0a1e1a19/rpc/utils_test.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package rpc
    18  
    19  import (
    20  	"strings"
    21  	"testing"
    22  )
    23  
    24  func TestNewID(t *testing.T) {
    25  	hexchars := "0123456789ABCDEFabcdef"
    26  	for i := 0; i < 100; i++ {
    27  		id := string(NewID())
    28  		if !strings.HasPrefix(id, "0x") {
    29  			t.Fatalf("invalid ID prefix, want '0x...', got %s", id)
    30  		}
    31  
    32  		id = id[2:]
    33  		if len(id) == 0 || len(id) > 32 {
    34  			t.Fatalf("invalid ID length, want len(id) > 0 && len(id) <= 32), got %d", len(id))
    35  		}
    36  
    37  		for i := 0; i < len(id); i++ {
    38  			if strings.IndexByte(hexchars, id[i]) == -1 {
    39  				t.Fatalf("unexpected byte, want any valid hex char, got %c", id[i])
    40  			}
    41  		}
    42  	}
    43  }