mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-25 21:17:16 +00:00
127 lines
3.7 KiB
Go
127 lines
3.7 KiB
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 discv5
|
|
|
|
import (
|
|
"bufio"
|
|
"bytes"
|
|
"encoding/binary"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"os/exec"
|
|
"runtime"
|
|
"strings"
|
|
"testing"
|
|
)
|
|
|
|
func getnacl() (string, error) {
|
|
switch runtime.GOARCH {
|
|
case "amd64":
|
|
_, err := exec.LookPath("sel_ldr_x86_64")
|
|
return "amd64p32", err
|
|
case "i386":
|
|
_, err := exec.LookPath("sel_ldr_i386")
|
|
return "i386", err
|
|
default:
|
|
return "", errors.New("nacl is not supported on " + runtime.GOARCH)
|
|
}
|
|
}
|
|
|
|
// runWithPlaygroundTime executes the caller
|
|
// in the NaCl sandbox with faketime enabled.
|
|
//
|
|
// This function must be called from a Test* function
|
|
// and the caller must skip the actual test when isHost is true.
|
|
func runWithPlaygroundTime(t *testing.T) (isHost bool) {
|
|
if runtime.GOOS == "nacl" {
|
|
return false
|
|
}
|
|
|
|
// Get the caller.
|
|
callerPC, _, _, ok := runtime.Caller(1)
|
|
if !ok {
|
|
panic("can't get caller")
|
|
}
|
|
callerFunc := runtime.FuncForPC(callerPC)
|
|
if callerFunc == nil {
|
|
panic("can't get caller")
|
|
}
|
|
callerName := callerFunc.Name()[strings.LastIndexByte(callerFunc.Name(), '.')+1:]
|
|
if !strings.HasPrefix(callerName, "Test") {
|
|
panic("must be called from witin a Test* function")
|
|
}
|
|
testPattern := "^" + callerName + "$"
|
|
|
|
// Unfortunately runtime.faketime (playground time mode) only works on NaCl. The NaCl
|
|
// SDK must be installed and linked into PATH for this to work.
|
|
arch, err := getnacl()
|
|
if err != nil {
|
|
t.Skip(err)
|
|
}
|
|
|
|
// Compile and run the calling test using NaCl.
|
|
// The extra tag ensures that the TestMain function in sim_main_test.go is used.
|
|
cmd := exec.Command("go", "test", "-v", "-tags", "faketime_simulation", "-timeout", "100h", "-run", testPattern, ".")
|
|
cmd.Env = append([]string{"GOOS=nacl", "GOARCH=" + arch}, os.Environ()...)
|
|
stdout, _ := cmd.StdoutPipe()
|
|
stderr, _ := cmd.StderrPipe()
|
|
go skipPlaygroundOutputHeaders(os.Stdout, stdout)
|
|
go skipPlaygroundOutputHeaders(os.Stderr, stderr)
|
|
if err := cmd.Run(); err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
// Ensure that the test function doesn't run in the (non-NaCl) host process.
|
|
return true
|
|
}
|
|
|
|
func skipPlaygroundOutputHeaders(out io.Writer, in io.Reader) {
|
|
// Additional output can be printed without the headers
|
|
// before the NaCl binary starts running (e.g. compiler error messages).
|
|
bufin := bufio.NewReader(in)
|
|
output, err := bufin.ReadBytes(0)
|
|
output = bytes.TrimSuffix(output, []byte{0})
|
|
if len(output) > 0 {
|
|
out.Write(output)
|
|
}
|
|
if err != nil {
|
|
return
|
|
}
|
|
bufin.UnreadByte()
|
|
|
|
// Playback header: 0 0 P B <8-byte time> <4-byte data length>
|
|
head := make([]byte, 4+8+4)
|
|
for {
|
|
if _, err := io.ReadFull(bufin, head); err != nil {
|
|
if err != io.EOF {
|
|
fmt.Fprintln(out, "read error:", err)
|
|
}
|
|
return
|
|
}
|
|
if !bytes.HasPrefix(head, []byte{0x00, 0x00, 'P', 'B'}) {
|
|
fmt.Fprintf(out, "expected playback header, got %q\n", head)
|
|
io.Copy(out, bufin)
|
|
return
|
|
}
|
|
// Copy data until next header.
|
|
size := binary.BigEndian.Uint32(head[12:])
|
|
io.CopyN(out, bufin, int64(size))
|
|
}
|
|
}
|