Official Go implementation of the Ethereum protocol
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go-ethereum/swarm/storage/mock/test/test.go

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// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Package test provides functions that are used for testing
// GlobalStorer implementations.
package test
import (
"bytes"
"fmt"
"io"
"strconv"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/swarm/storage"
"github.com/ethereum/go-ethereum/swarm/storage/mock"
)
// MockStore creates NodeStore instances from provided GlobalStorer,
// each one with a unique address, stores different chunks on them
// and checks if they are retrievable or not on all nodes.
// Attribute n defines the number of NodeStores that will be created.
func MockStore(t *testing.T, globalStore mock.GlobalStorer, n int) {
t.Run("GlobalStore", func(t *testing.T) {
addrs := make([]common.Address, n)
for i := 0; i < n; i++ {
addrs[i] = common.HexToAddress(strconv.FormatInt(int64(i)+1, 16))
}
for i, addr := range addrs {
chunkAddr := storage.Address(append(addr[:], []byte(strconv.FormatInt(int64(i)+1, 16))...))
data := []byte(strconv.FormatInt(int64(i)+1, 16))
data = append(data, make([]byte, 4096-len(data))...)
globalStore.Put(addr, chunkAddr, data)
for _, cAddr := range addrs {
cData, err := globalStore.Get(cAddr, chunkAddr)
if cAddr == addr {
if err != nil {
t.Fatalf("get data from store %s key %s: %v", cAddr.Hex(), chunkAddr.Hex(), err)
}
if !bytes.Equal(data, cData) {
t.Fatalf("data on store %s: expected %x, got %x", cAddr.Hex(), data, cData)
}
if !globalStore.HasKey(cAddr, chunkAddr) {
t.Fatalf("expected key %s on global store for node %s, but it was not found", chunkAddr.Hex(), cAddr.Hex())
}
} else {
if err != mock.ErrNotFound {
t.Fatalf("expected error from store %s: %v, got %v", cAddr.Hex(), mock.ErrNotFound, err)
}
if len(cData) > 0 {
t.Fatalf("data on store %s: expected nil, got %x", cAddr.Hex(), cData)
}
if globalStore.HasKey(cAddr, chunkAddr) {
t.Fatalf("not expected key %s on global store for node %s, but it was found", chunkAddr.Hex(), cAddr.Hex())
}
}
}
}
})
t.Run("NodeStore", func(t *testing.T) {
nodes := make(map[common.Address]*mock.NodeStore)
for i := 0; i < n; i++ {
addr := common.HexToAddress(strconv.FormatInt(int64(i)+1, 16))
nodes[addr] = globalStore.NewNodeStore(addr)
}
i := 0
for addr, store := range nodes {
i++
chunkAddr := storage.Address(append(addr[:], []byte(fmt.Sprintf("%x", i))...))
data := []byte(strconv.FormatInt(int64(i)+1, 16))
data = append(data, make([]byte, 4096-len(data))...)
store.Put(chunkAddr, data)
for cAddr, cStore := range nodes {
cData, err := cStore.Get(chunkAddr)
if cAddr == addr {
if err != nil {
t.Fatalf("get data from store %s key %s: %v", cAddr.Hex(), chunkAddr.Hex(), err)
}
if !bytes.Equal(data, cData) {
t.Fatalf("data on store %s: expected %x, got %x", cAddr.Hex(), data, cData)
}
if !globalStore.HasKey(cAddr, chunkAddr) {
t.Fatalf("expected key %s on global store for node %s, but it was not found", chunkAddr.Hex(), cAddr.Hex())
}
} else {
if err != mock.ErrNotFound {
t.Fatalf("expected error from store %s: %v, got %v", cAddr.Hex(), mock.ErrNotFound, err)
}
if len(cData) > 0 {
t.Fatalf("data on store %s: expected nil, got %x", cAddr.Hex(), cData)
}
if globalStore.HasKey(cAddr, chunkAddr) {
t.Fatalf("not expected key %s on global store for node %s, but it was found", chunkAddr.Hex(), cAddr.Hex())
}
}
}
}
})
}
// ImportExport saves chunks to the outStore, exports them to the tar archive,
// imports tar archive to the inStore and checks if all chunks are imported correctly.
func ImportExport(t *testing.T, outStore, inStore mock.GlobalStorer, n int) {
exporter, ok := outStore.(mock.Exporter)
if !ok {
t.Fatal("outStore does not implement mock.Exporter")
}
importer, ok := inStore.(mock.Importer)
if !ok {
t.Fatal("inStore does not implement mock.Importer")
}
addrs := make([]common.Address, n)
for i := 0; i < n; i++ {
addrs[i] = common.HexToAddress(strconv.FormatInt(int64(i)+1, 16))
}
for i, addr := range addrs {
chunkAddr := storage.Address(append(addr[:], []byte(strconv.FormatInt(int64(i)+1, 16))...))
data := []byte(strconv.FormatInt(int64(i)+1, 16))
data = append(data, make([]byte, 4096-len(data))...)
outStore.Put(addr, chunkAddr, data)
}
r, w := io.Pipe()
defer r.Close()
go func() {
defer w.Close()
if _, err := exporter.Export(w); err != nil {
t.Fatalf("export: %v", err)
}
}()
if _, err := importer.Import(r); err != nil {
t.Fatalf("import: %v", err)
}
for i, addr := range addrs {
chunkAddr := storage.Address(append(addr[:], []byte(strconv.FormatInt(int64(i)+1, 16))...))
data := []byte(strconv.FormatInt(int64(i)+1, 16))
data = append(data, make([]byte, 4096-len(data))...)
for _, cAddr := range addrs {
cData, err := inStore.Get(cAddr, chunkAddr)
if cAddr == addr {
if err != nil {
t.Fatalf("get data from store %s key %s: %v", cAddr.Hex(), chunkAddr.Hex(), err)
}
if !bytes.Equal(data, cData) {
t.Fatalf("data on store %s: expected %x, got %x", cAddr.Hex(), data, cData)
}
if !inStore.HasKey(cAddr, chunkAddr) {
t.Fatalf("expected key %s on global store for node %s, but it was not found", chunkAddr.Hex(), cAddr.Hex())
}
} else {
if err != mock.ErrNotFound {
t.Fatalf("expected error from store %s: %v, got %v", cAddr.Hex(), mock.ErrNotFound, err)
}
if len(cData) > 0 {
t.Fatalf("data on store %s: expected nil, got %x", cAddr.Hex(), cData)
}
if inStore.HasKey(cAddr, chunkAddr) {
t.Fatalf("not expected key %s on global store for node %s, but it was found", chunkAddr.Hex(), cAddr.Hex())
}
}
}
}
}