github.com/apegame/aac@v1.9.7/cmd/geth/genesis_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  	"io/ioutil"
    21  	"os"
    22  	"path/filepath"
    23  	"testing"
    24  )
    25  
    26  var customGenesisTests = []struct {
    27  	genesis string
    28  	query   string
    29  	result  string
    30  }{
    31  	// Plain genesis file without anything extra
    32  	{
    33  		genesis: `{
    34  			"alloc"      : {},
    35  			"coinbase"   : "0x0000000000000000000000000000000000000000",
    36  			"difficulty" : "0x20000",
    37  			"extraData"  : "",
    38  			"gasLimit"   : "0x2fefd8",
    39  			"nonce"      : "0x0000000000000042",
    40  			"mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
    41  			"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
    42  			"timestamp"  : "0x00"
    43  		}`,
    44  		query:  "eth.getBlock(0).nonce",
    45  		result: "0x0000000000000042",
    46  	},
    47  	// Genesis file with an empty chain configuration (ensure missing fields work)
    48  	{
    49  		genesis: `{
    50  			"alloc"      : {},
    51  			"coinbase"   : "0x0000000000000000000000000000000000000000",
    52  			"difficulty" : "0x20000",
    53  			"extraData"  : "",
    54  			"gasLimit"   : "0x2fefd8",
    55  			"nonce"      : "0x0000000000000042",
    56  			"mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
    57  			"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
    58  			"timestamp"  : "0x00",
    59  			"config"     : {}
    60  		}`,
    61  		query:  "eth.getBlock(0).nonce",
    62  		result: "0x0000000000000042",
    63  	},
    64  	// Genesis file with specific chain configurations
    65  	{
    66  		genesis: `{
    67  			"alloc"      : {},
    68  			"coinbase"   : "0x0000000000000000000000000000000000000000",
    69  			"difficulty" : "0x20000",
    70  			"extraData"  : "",
    71  			"gasLimit"   : "0x2fefd8",
    72  			"nonce"      : "0x0000000000000042",
    73  			"mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
    74  			"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
    75  			"timestamp"  : "0x00",
    76  			"config"     : {
    77  				"homesteadBlock" : 314,
    78  				"daoForkBlock"   : 141,
    79  				"daoForkSupport" : true
    80  			}
    81  		}`,
    82  		query:  "eth.getBlock(0).nonce",
    83  		result: "0x0000000000000042",
    84  	},
    85  }
    86  
    87  // Tests that initializing Geth with a custom genesis block and chain definitions
    88  // work properly.
    89  func TestCustomGenesis(t *testing.T) {
    90  	for i, tt := range customGenesisTests {
    91  		// Create a temporary data directory to use and inspect later
    92  		datadir := tmpdir(t)
    93  		defer os.RemoveAll(datadir)
    94  
    95  		// Initialize the data directory with the custom genesis block
    96  		json := filepath.Join(datadir, "genesis.json")
    97  		if err := ioutil.WriteFile(json, []byte(tt.genesis), 0600); err != nil {
    98  			t.Fatalf("test %d: failed to write genesis file: %v", i, err)
    99  		}
   100  		runGeth(t, "--datadir", datadir, "init", json).WaitExit()
   101  
   102  		// Query the custom genesis block
   103  		geth := runGeth(t,
   104  			"--datadir", datadir, "--maxpeers", "0", "--port", "0",
   105  			"--nodiscover", "--nat", "none", "--ipcdisable",
   106  			"--exec", tt.query, "console")
   107  		geth.ExpectRegexp(tt.result)
   108  		geth.ExpectExit()
   109  	}
   110  }