aboutsummaryrefslogblamecommitdiffstats
path: root/internal/guide/guide_test.go
blob: 9c7ad16d182dead5f4c6e5643d40061ed045398a (plain) (tree)

























                                                                                  
                  




                       

                                                           










                                                                        

                                                                                                                          

                                                                        
                                                         




                                                                                     
                                                                                 



                                                                                       
                                                                                         


                                                                   
                                                                    



                                                                                   
                                                                                           


                                                             
                                                       


                                                                    
                                                          

                                                         
                                                                                                


                                                                             
                                                                    

                                                             
                                                               

                                                                         
                                                       


                                                                                  
                                                                                      

                                                                  
                                                               


                                                                              
// 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 <http://www.gnu.org/licenses/>.

// 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"
    "math/big"
    "os"
    "path/filepath"
    "testing"
    "time"

    "github.com/ethereum/go-ethereum/accounts/keystore"
    "github.com/ethereum/go-ethereum/core/types"
)

// 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 with standard crypto parameters
    ks := keystore.NewKeyStore(filepath.Join(workdir, "keystore"), keystore.StandardScryptN, keystore.StandardScryptP)

    // Create a new account with the specified encryption passphrase
    newAcc, err := ks.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 := ks.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 := ks.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 := ks.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 := ks.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 := ks.NewAccount("Signer password")
    if err != nil {
        t.Fatalf("Failed to create signer account: %v", err)
    }
    tx, chain := new(types.Transaction), big.NewInt(1)

    // Sign a transaction with a single authorization
    if _, err := ks.SignTxWithPassphrase(signer, "Signer password", tx, chain); err != nil {
        t.Fatalf("Failed to sign with passphrase: %v", err)
    }
    // Sign a transaction with multiple manually cancelled authorizations
    if err := ks.Unlock(signer, "Signer password"); err != nil {
        t.Fatalf("Failed to unlock account: %v", err)
    }
    if _, err := ks.SignTx(signer, tx, chain); err != nil {
        t.Fatalf("Failed to sign with unlocked account: %v", err)
    }
    if err := ks.Lock(signer.Address); err != nil {
        t.Fatalf("Failed to lock account: %v", err)
    }
    // Sign a transaction with multiple automatically cancelled authorizations
    if err := ks.TimedUnlock(signer, "Signer password", time.Second); err != nil {
        t.Fatalf("Failed to time unlock account: %v", err)
    }
    if _, err := ks.SignTx(signer, tx, chain); err != nil {
        t.Fatalf("Failed to sign with time unlocked account: %v", err)
    }
}