// Copyright 2017 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 . // This file contains the code snippets from the developer's guide embedded into // Go tests. This ensures that any code published in out guides will not break // accidentally via some code update. If some API changes nonetheless that needs // modifying this file, please port any modification over into the developer's // guide wiki pages too! package guide import ( "io/ioutil" "os" "path/filepath" "testing" "time" "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/common" ) // Tests that the account management snippets work correctly. func TestAccountManagement(t *testing.T) { // Create a temporary folder to work with workdir, err := ioutil.TempDir("", "") if err != nil { t.Fatalf("Failed to create temporary work dir: %v", err) } defer os.RemoveAll(workdir) // Create an encrypted keystore manager with standard crypto parameters am := accounts.NewManager(filepath.Join(workdir, "keystore"), accounts.StandardScryptN, accounts.StandardScryptP) // Create a new account with the specified encryption passphrase newAcc, err := am.NewAccount("Creation password") if err != nil { t.Fatalf("Failed to create new account: %v", err) } // Export the newly created account with a different passphrase. The returned // data from this method invocation is a JSON encoded, encrypted key-file jsonAcc, err := am.Export(newAcc, "Creation password", "Export password") if err != nil { t.Fatalf("Failed to export account: %v", err) } // Update the passphrase on the account created above inside the local keystore if err := am.Update(newAcc, "Creation password", "Update password"); err != nil { t.Fatalf("Failed to update account: %v", err) } // Delete the account updated above from the local keystore if err := am.Delete(newAcc, "Update password"); err != nil { t.Fatalf("Failed to delete account: %v", err) } // Import back the account we've exported (and then deleted) above with yet // again a fresh passphrase if _, err := am.Import(jsonAcc, "Export password", "Import password"); err != nil { t.Fatalf("Failed to import account: %v", err) } // Create a new account to sign transactions with signer, err := am.NewAccount("Signer password") if err != nil { t.Fatalf("Failed to create signer account: %v", err) } txHash := common.HexToHash("0x0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef") // Sign a transaction with a single authorization if _, err := am.SignWithPassphrase(signer, "Signer password", txHash.Bytes()); err != nil { t.Fatalf("Failed to sign with passphrase: %v", err) } // Sign a transaction with multiple manually cancelled authorizations if err := am.Unlock(signer, "Signer password"); err != nil { t.Fatalf("Failed to unlock account: %v", err) } if _, err := am.Sign(signer.Address, txHash.Bytes()); err != nil { t.Fatalf("Failed to sign with unlocked account: %v", err) } if err := am.Lock(signer.Address); err != nil { t.Fatalf("Failed to lock account: %v", err) } // Sign a transaction with multiple automatically cancelled authorizations if err := am.TimedUnlock(signer, "Signer password", time.Second); err != nil { t.Fatalf("Failed to time unlock account: %v", err) } if _, err := am.Sign(signer.Address, txHash.Bytes()); err != nil { t.Fatalf("Failed to sign with time unlocked account: %v", err) } }