github.com/phillinzzz/newBsc@v1.1.6/cmd/geth/run_test.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of go-ethereum.
     3  //
     4  // go-ethereum is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU 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  // go-ethereum 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 General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU General Public License
    15  // along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package main
    18  
    19  import (
    20  	"context"
    21  	"fmt"
    22  	"io/ioutil"
    23  	"os"
    24  	"testing"
    25  	"time"
    26  
    27  	"github.com/docker/docker/pkg/reexec"
    28  	"github.com/phillinzzz/newBsc/internal/cmdtest"
    29  	"github.com/phillinzzz/newBsc/rpc"
    30  )
    31  
    32  func tmpdir(t *testing.T) string {
    33  	dir, err := ioutil.TempDir("", "geth-test")
    34  	if err != nil {
    35  		t.Fatal(err)
    36  	}
    37  	return dir
    38  }
    39  
    40  type testgeth struct {
    41  	*cmdtest.TestCmd
    42  
    43  	// template variables for expect
    44  	Datadir   string
    45  	Etherbase string
    46  }
    47  
    48  func init() {
    49  	// Run the app if we've been exec'd as "geth-test" in runGeth.
    50  	reexec.Register("geth-test", func() {
    51  		if err := app.Run(os.Args); err != nil {
    52  			fmt.Fprintln(os.Stderr, err)
    53  			os.Exit(1)
    54  		}
    55  		os.Exit(0)
    56  	})
    57  }
    58  
    59  func TestMain(m *testing.M) {
    60  	// check if we have been reexec'd
    61  	if reexec.Init() {
    62  		return
    63  	}
    64  	os.Exit(m.Run())
    65  }
    66  
    67  // spawns geth with the given command line args. If the args don't set --datadir, the
    68  // child g gets a temporary data directory.
    69  func runGeth(t *testing.T, args ...string) *testgeth {
    70  	tt := &testgeth{}
    71  	tt.TestCmd = cmdtest.NewTestCmd(t, tt)
    72  	for i, arg := range args {
    73  		switch arg {
    74  		case "--datadir":
    75  			if i < len(args)-1 {
    76  				tt.Datadir = args[i+1]
    77  			}
    78  		case "--miner.etherbase":
    79  			if i < len(args)-1 {
    80  				tt.Etherbase = args[i+1]
    81  			}
    82  		}
    83  	}
    84  	if tt.Datadir == "" {
    85  		tt.Datadir = tmpdir(t)
    86  		tt.Cleanup = func() { os.RemoveAll(tt.Datadir) }
    87  		args = append([]string{"--datadir", tt.Datadir}, args...)
    88  		// Remove the temporary datadir if something fails below.
    89  		defer func() {
    90  			if t.Failed() {
    91  				tt.Cleanup()
    92  			}
    93  		}()
    94  	}
    95  
    96  	// Boot "geth". This actually runs the test binary but the TestMain
    97  	// function will prevent any tests from running.
    98  	tt.Run("geth-test", args...)
    99  
   100  	return tt
   101  }
   102  
   103  // waitForEndpoint attempts to connect to an RPC endpoint until it succeeds.
   104  func waitForEndpoint(t *testing.T, endpoint string, timeout time.Duration) {
   105  	probe := func() bool {
   106  		ctx, cancel := context.WithTimeout(context.Background(), timeout)
   107  		defer cancel()
   108  		c, err := rpc.DialContext(ctx, endpoint)
   109  		if c != nil {
   110  			_, err = c.SupportedModules()
   111  			c.Close()
   112  		}
   113  		return err == nil
   114  	}
   115  
   116  	start := time.Now()
   117  	for {
   118  		if probe() {
   119  			return
   120  		}
   121  		if time.Since(start) > timeout {
   122  			t.Fatal("endpoint", endpoint, "did not open within", timeout)
   123  		}
   124  		time.Sleep(200 * time.Millisecond)
   125  	}
   126  }