108 lines
3.5 KiB
Go
108 lines
3.5 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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)
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var customGenesisTests = []struct {
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genesis string
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query string
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result string
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}{
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// Plain genesis file without anything extra
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{
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genesis: `{
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"alloc" : {},
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"coinbase" : "0x0000000000000000000000000000000000000000",
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"difficulty" : "0x20000",
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"extraData" : "",
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"gasLimit" : "0x2fefd8",
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"nonce" : "0x0000000000000042",
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"mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
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"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
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"timestamp" : "0x00"
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}`,
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query: "eth.getBlock(0).nonce",
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result: "0x0000000000000042",
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},
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// Genesis file with an empty chain configuration (ensure missing fields work)
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{
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genesis: `{
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"alloc" : {},
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"coinbase" : "0x0000000000000000000000000000000000000000",
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"difficulty" : "0x20000",
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"extraData" : "",
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"gasLimit" : "0x2fefd8",
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"nonce" : "0x0000000000000042",
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"mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
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"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
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"timestamp" : "0x00",
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"config" : {}
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}`,
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query: "eth.getBlock(0).nonce",
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result: "0x0000000000000042",
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},
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// Genesis file with specific chain configurations
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{
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genesis: `{
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"alloc" : {},
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"coinbase" : "0x0000000000000000000000000000000000000000",
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"difficulty" : "0x20000",
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"extraData" : "",
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"gasLimit" : "0x2fefd8",
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"nonce" : "0x0000000000000042",
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"mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
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"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
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"timestamp" : "0x00",
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"config" : {
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"homesteadBlock" : 314,
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"daoForkBlock" : 141,
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"daoForkSupport" : true
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},
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}`,
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query: "eth.getBlock(0).nonce",
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result: "0x0000000000000042",
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},
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}
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// Tests that initializing Geth with a custom genesis block and chain definitions
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// work properly.
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func TestCustomGenesis(t *testing.T) {
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for i, tt := range customGenesisTests {
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// Create a temporary data directory to use and inspect later
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datadir := tmpdir(t)
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defer os.RemoveAll(datadir)
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// Initialize the data directory with the custom genesis block
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json := filepath.Join(datadir, "genesis.json")
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if err := ioutil.WriteFile(json, []byte(tt.genesis), 0600); err != nil {
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t.Fatalf("test %d: failed to write genesis file: %v", i, err)
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}
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runGeth(t, "--datadir", datadir, "init", json).cmd.Wait()
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// Query the custom genesis block
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geth := runGeth(t, "--datadir", datadir, "--maxpeers", "0", "--nodiscover", "--nat", "none", "--ipcdisable", "--exec", tt.query, "console")
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geth.expectRegexp(tt.result)
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geth.expectExit()
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}
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}
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