github.com/codingfuture/orig-energi3@v0.8.4/internal/guide/guide_test.go (about)

     1  // Copyright 2018 The Energi Core Authors
     2  // Copyright 2017 The go-ethereum Authors
     3  // This file is part of the Energi Core library.
     4  //
     5  // The Energi Core library is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU Lesser General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // The Energi Core library is distributed in the hope that it will be useful,
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  // GNU Lesser General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU Lesser General Public License
    16  // along with the Energi Core library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  // This file contains the code snippets from the developer's guide embedded into
    19  // Go tests. This ensures that any code published in out guides will not break
    20  // accidentally via some code update. If some API changes nonetheless that needs
    21  // modifying this file, please port any modification over into the developer's
    22  // guide wiki pages too!
    23  
    24  package guide
    25  
    26  import (
    27  	"io/ioutil"
    28  	"math/big"
    29  	"os"
    30  	"path/filepath"
    31  	"testing"
    32  	"time"
    33  
    34  	"github.com/ethereum/go-ethereum/accounts/keystore"
    35  	"github.com/ethereum/go-ethereum/core/types"
    36  )
    37  
    38  // Tests that the account management snippets work correctly.
    39  func TestAccountManagement(t *testing.T) {
    40  	// Create a temporary folder to work with
    41  	workdir, err := ioutil.TempDir("", "")
    42  	if err != nil {
    43  		t.Fatalf("Failed to create temporary work dir: %v", err)
    44  	}
    45  	defer os.RemoveAll(workdir)
    46  
    47  	// Create an encrypted keystore with standard crypto parameters
    48  	ks := keystore.NewKeyStore(filepath.Join(workdir, "keystore"), keystore.StandardScryptN, keystore.StandardScryptP)
    49  
    50  	// Create a new account with the specified encryption passphrase
    51  	newAcc, err := ks.NewAccount("Creation password")
    52  	if err != nil {
    53  		t.Fatalf("Failed to create new account: %v", err)
    54  	}
    55  	// Export the newly created account with a different passphrase. The returned
    56  	// data from this method invocation is a JSON encoded, encrypted key-file
    57  	jsonAcc, err := ks.Export(newAcc, "Creation password", "Export password")
    58  	if err != nil {
    59  		t.Fatalf("Failed to export account: %v", err)
    60  	}
    61  	// Update the passphrase on the account created above inside the local keystore
    62  	if err := ks.Update(newAcc, "Creation password", "Update password"); err != nil {
    63  		t.Fatalf("Failed to update account: %v", err)
    64  	}
    65  	// Delete the account updated above from the local keystore
    66  	if err := ks.Delete(newAcc, "Update password"); err != nil {
    67  		t.Fatalf("Failed to delete account: %v", err)
    68  	}
    69  	// Import back the account we've exported (and then deleted) above with yet
    70  	// again a fresh passphrase
    71  	if _, err := ks.Import(jsonAcc, "Export password", "Import password"); err != nil {
    72  		t.Fatalf("Failed to import account: %v", err)
    73  	}
    74  	// Create a new account to sign transactions with
    75  	signer, err := ks.NewAccount("Signer password")
    76  	if err != nil {
    77  		t.Fatalf("Failed to create signer account: %v", err)
    78  	}
    79  	tx, chain := new(types.Transaction), big.NewInt(1)
    80  
    81  	// Sign a transaction with a single authorization
    82  	if _, err := ks.SignTxWithPassphrase(signer, "Signer password", tx, chain); err != nil {
    83  		t.Fatalf("Failed to sign with passphrase: %v", err)
    84  	}
    85  	// Sign a transaction with multiple manually cancelled authorizations
    86  	if err := ks.Unlock(signer, "Signer password", false); err != nil {
    87  		t.Fatalf("Failed to unlock account: %v", err)
    88  	}
    89  	if _, err := ks.SignTx(signer, tx, chain); err != nil {
    90  		t.Fatalf("Failed to sign with unlocked account: %v", err)
    91  	}
    92  	if err := ks.Lock(signer.Address); err != nil {
    93  		t.Fatalf("Failed to lock account: %v", err)
    94  	}
    95  	// Sign a transaction with multiple automatically cancelled authorizations
    96  	if err := ks.TimedUnlock(signer, "Signer password", time.Second, false); err != nil {
    97  		t.Fatalf("Failed to time unlock account: %v", err)
    98  	}
    99  	if _, err := ks.SignTx(signer, tx, chain); err != nil {
   100  		t.Fatalf("Failed to sign with time unlocked account: %v", err)
   101  	}
   102  }