github.com/theQRL/go-zond@v0.2.1/cmd/gzond/genesis_test.go

// Copyright 2016 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.

package main

import (
	"fmt"
	"os"
	"path/filepath"
	"strconv"
	"testing"
)

var customGenesisTests = []struct {
	genesis string
	query   string
	result  string
}{
	// Genesis file with an empty chain configuration (ensure missing fields work)
	{
		genesis: `{
			"alloc"      : {},
			"coinbase"   : "Z0000000000000000000000000000000000000000",
			"extraData"  : "0x0000000000001338",
			"gasLimit"   : "0x2fefd8",
			"mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
			"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
			"timestamp"  : "0x00",
			"config"     : {}
		}`,
		query:  "zond.getBlock(0).extraData",
		result: "0x0000000000001338",
	},
	// Genesis file with specific chain configurations
	{
		genesis: `{
			"alloc"      : {},
			"coinbase"   : "Z0000000000000000000000000000000000000000",
			"extraData"  : "0x0000000000001339",
			"gasLimit"   : "0x2fefd8",
			"mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
			"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
			"timestamp"  : "0x00",
			"config"     : {}
		}`,
		query:  "zond.getBlock(0).extraData",
		result: "0x0000000000001339",
	},
}

// Tests that initializing Gzond with a custom genesis block and chain definitions
// work properly.
func TestCustomGenesis(t *testing.T) {
	t.Parallel()
	for i, tt := range customGenesisTests {
		// Create a temporary data directory to use and inspect later
		datadir := t.TempDir()

		// Initialize the data directory with the custom genesis block
		json := filepath.Join(datadir, "genesis.json")
		if err := os.WriteFile(json, []byte(tt.genesis), 0600); err != nil {
			t.Fatalf("test %d: failed to write genesis file: %v", i, err)
		}
		runGzond(t, "--datadir", datadir, "init", json).WaitExit()

		// Query the custom genesis block
		gzond := runGzond(t, "--networkid", "1337", "--syncmode=full", "--cache", "16",
			"--datadir", datadir, "--maxpeers", "0", "--port", "0", "--authrpc.port", "0",
			"--nodiscover", "--nat", "none", "--ipcdisable",
			"--exec", tt.query, "console")
		gzond.ExpectRegexp(tt.result)
		gzond.ExpectExit()
	}
}

// TestCustomBackend that the backend selection and detection (leveldb vs pebble) works properly.
func TestCustomBackend(t *testing.T) {
	t.Parallel()
	// Test pebble, but only on 64-bit platforms
	if strconv.IntSize != 64 {
		t.Skip("Custom backends are only available on 64-bit platform")
	}
	genesis := `{
		"alloc"      : {},
		"coinbase"   : "Z0000000000000000000000000000000000000000",
		"extraData"  : "0x0000000000001338",
		"gasLimit"   : "0x2fefd8",
		"mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
		"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
		"timestamp"  : "0x00",
		"config"     : {}
	}`
	type backendTest struct {
		initArgs   []string
		initExpect string
		execArgs   []string
		execExpect string
	}
	testfunc := func(t *testing.T, tt backendTest) error {
		// Create a temporary data directory to use and inspect later
		datadir := t.TempDir()

		// Initialize the data directory with the custom genesis block
		json := filepath.Join(datadir, "genesis.json")
		if err := os.WriteFile(json, []byte(genesis), 0600); err != nil {
			return fmt.Errorf("failed to write genesis file: %v", err)
		}
		{ // Init
			args := append(tt.initArgs, "--datadir", datadir, "init", json)
			gzond := runGzond(t, args...)
			gzond.ExpectRegexp(tt.initExpect)
			gzond.ExpectExit()
		}
		{ // Exec + query
			args := append(tt.execArgs, "--networkid", "1337", "--syncmode=full", "--cache", "16",
				"--datadir", datadir, "--maxpeers", "0", "--port", "0", "--authrpc.port", "0",
				"--nodiscover", "--nat", "none", "--ipcdisable",
				"--exec", "zond.getBlock(0).extraData", "console")
			gzond := runGzond(t, args...)
			gzond.ExpectRegexp(tt.execExpect)
			gzond.ExpectExit()
		}
		return nil
	}
	for i, tt := range []backendTest{
		{ // When not specified, it should default to pebble
			execArgs:   []string{"--db.engine", "pebble"},
			execExpect: "0x0000000000001338",
		},
		{ // Explicit leveldb
			initArgs:   []string{"--db.engine", "leveldb"},
			execArgs:   []string{"--db.engine", "leveldb"},
			execExpect: "0x0000000000001338",
		},
		{ // Explicit leveldb first, then autodiscover
			initArgs:   []string{"--db.engine", "leveldb"},
			execExpect: "0x0000000000001338",
		},
		{ // Explicit pebble
			initArgs:   []string{"--db.engine", "pebble"},
			execArgs:   []string{"--db.engine", "pebble"},
			execExpect: "0x0000000000001338",
		},
		{ // Explicit pebble, then auto-discover
			initArgs:   []string{"--db.engine", "pebble"},
			execExpect: "0x0000000000001338",
		},
		{ // Can't start pebble on top of leveldb
			initArgs:   []string{"--db.engine", "leveldb"},
			execArgs:   []string{"--db.engine", "pebble"},
			execExpect: `Fatal: Could not open database: db.engine choice was pebble but found pre-existing leveldb database in specified data directory`,
		},
		{ // Can't start leveldb on top of pebble
			initArgs:   []string{"--db.engine", "pebble"},
			execArgs:   []string{"--db.engine", "leveldb"},
			execExpect: `Fatal: Could not open database: db.engine choice was leveldb but found pre-existing pebble database in specified data directory`,
		},
		{ // Reject invalid backend choice
			initArgs:   []string{"--db.engine", "mssql"},
			initExpect: `Fatal: Invalid choice for db.engine 'mssql', allowed 'leveldb' or 'pebble'`,
			// Since the init fails, this will return the (default) mainnet genesis
			// block nonce
			execExpect: `0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa`,
		},
	} {
		if err := testfunc(t, tt); err != nil {
			t.Fatalf("test %d-leveldb: %v", i, err)
		}
	}
}