8d066f1f42
This commit replaces ioutil.TempDir with t.TempDir in tests. The
directory created by t.TempDir is automatically removed when the test
and all its subtests complete.
Prior to this commit, temporary directory created using ioutil.TempDir
had to be removed manually by calling os.RemoveAll, which is omitted in
some tests. The error handling boilerplate e.g.
defer func() {
if err := os.RemoveAll(dir); err != nil {
t.Fatal(err)
}
}
is also tedious, but t.TempDir handles this for us nicely.
Reference: https://pkg.go.dev/testing#T.TempDir
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
93 lines
3.0 KiB
Go
93 lines
3.0 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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"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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// 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" : "0x0000000000001338",
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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: "0x0000000000001338",
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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" : "0x0000000000001339",
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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" : 42,
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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: "0x0000000000001339",
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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 := t.TempDir()
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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).WaitExit()
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// Query the custom genesis block
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geth := runGeth(t, "--networkid", "1337", "--syncmode=full", "--cache", "16",
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"--datadir", datadir, "--maxpeers", "0", "--port", "0",
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"--nodiscover", "--nat", "none", "--ipcdisable",
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"--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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