github.com/murrekatt/go-ethereum@v1.5.8-0.20170123175102-fc52f2c007fb/internal/guide/guide_test.go (about)

     1  // Copyright 2017 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // This file contains the code snippets from the developer's guide embedded into
    18  // Go tests. This ensures that any code published in out guides will not break
    19  // accidentally via some code update. If some API changes nonetheless that needs
    20  // modifying this file, please port any modification over into the developer's
    21  // guide wiki pages too!
    22  
    23  package guide
    24  
    25  import (
    26  	"io/ioutil"
    27  	"os"
    28  	"path/filepath"
    29  	"testing"
    30  	"time"
    31  
    32  	"github.com/ethereum/go-ethereum/accounts"
    33  	"github.com/ethereum/go-ethereum/common"
    34  )
    35  
    36  // Tests that the account management snippets work correctly.
    37  func TestAccountManagement(t *testing.T) {
    38  	// Create a temporary folder to work with
    39  	workdir, err := ioutil.TempDir("", "")
    40  	if err != nil {
    41  		t.Fatalf("Failed to create temporary work dir: %v", err)
    42  	}
    43  	defer os.RemoveAll(workdir)
    44  
    45  	// Create an encrypted keystore manager with standard crypto parameters
    46  	am := accounts.NewManager(filepath.Join(workdir, "keystore"), accounts.StandardScryptN, accounts.StandardScryptP)
    47  
    48  	// Create a new account with the specified encryption passphrase
    49  	newAcc, err := am.NewAccount("Creation password")
    50  	if err != nil {
    51  		t.Fatalf("Failed to create new account: %v", err)
    52  	}
    53  	// Export the newly created account with a different passphrase. The returned
    54  	// data from this method invocation is a JSON encoded, encrypted key-file
    55  	jsonAcc, err := am.Export(newAcc, "Creation password", "Export password")
    56  	if err != nil {
    57  		t.Fatalf("Failed to export account: %v", err)
    58  	}
    59  	// Update the passphrase on the account created above inside the local keystore
    60  	if err := am.Update(newAcc, "Creation password", "Update password"); err != nil {
    61  		t.Fatalf("Failed to update account: %v", err)
    62  	}
    63  	// Delete the account updated above from the local keystore
    64  	if err := am.Delete(newAcc, "Update password"); err != nil {
    65  		t.Fatalf("Failed to delete account: %v", err)
    66  	}
    67  	// Import back the account we've exported (and then deleted) above with yet
    68  	// again a fresh passphrase
    69  	if _, err := am.Import(jsonAcc, "Export password", "Import password"); err != nil {
    70  		t.Fatalf("Failed to import account: %v", err)
    71  	}
    72  	// Create a new account to sign transactions with
    73  	signer, err := am.NewAccount("Signer password")
    74  	if err != nil {
    75  		t.Fatalf("Failed to create signer account: %v", err)
    76  	}
    77  	txHash := common.HexToHash("0x0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef")
    78  
    79  	// Sign a transaction with a single authorization
    80  	if _, err := am.SignWithPassphrase(signer, "Signer password", txHash.Bytes()); err != nil {
    81  		t.Fatalf("Failed to sign with passphrase: %v", err)
    82  	}
    83  	// Sign a transaction with multiple manually cancelled authorizations
    84  	if err := am.Unlock(signer, "Signer password"); err != nil {
    85  		t.Fatalf("Failed to unlock account: %v", err)
    86  	}
    87  	if _, err := am.Sign(signer.Address, txHash.Bytes()); err != nil {
    88  		t.Fatalf("Failed to sign with unlocked account: %v", err)
    89  	}
    90  	if err := am.Lock(signer.Address); err != nil {
    91  		t.Fatalf("Failed to lock account: %v", err)
    92  	}
    93  	// Sign a transaction with multiple automatically cancelled authorizations
    94  	if err := am.TimedUnlock(signer, "Signer password", time.Second); err != nil {
    95  		t.Fatalf("Failed to time unlock account: %v", err)
    96  	}
    97  	if _, err := am.Sign(signer.Address, txHash.Bytes()); err != nil {
    98  		t.Fatalf("Failed to sign with time unlocked account: %v", err)
    99  	}
   100  }