// Copyright 2016 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 . package chequebook import ( "crypto/ecdsa" "math/big" "os" "path/filepath" "testing" "time" "github.com/ethereum/go-ethereum/accounts/abi/bind" "github.com/ethereum/go-ethereum/accounts/abi/bind/backends" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/contracts/chequebook/contract" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/crypto" ) var ( key0, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") key1, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") key2, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee") addr0 = crypto.PubkeyToAddress(key0.PublicKey) addr1 = crypto.PubkeyToAddress(key1.PublicKey) addr2 = crypto.PubkeyToAddress(key2.PublicKey) ) func newTestBackend() *backends.SimulatedBackend { return backends.NewSimulatedBackend(core.GenesisAlloc{ addr0: {Balance: big.NewInt(1000000000)}, addr1: {Balance: big.NewInt(1000000000)}, addr2: {Balance: big.NewInt(1000000000)}, }) } func deploy(prvKey *ecdsa.PrivateKey, amount *big.Int, backend *backends.SimulatedBackend) (common.Address, error) { deployTransactor := bind.NewKeyedTransactor(prvKey) deployTransactor.Value = amount addr, _, _, err := contract.DeployChequebook(deployTransactor, backend) if err != nil { return common.Address{}, err } backend.Commit() return addr, nil } func TestIssueAndReceive(t *testing.T) { path := filepath.Join(os.TempDir(), "chequebook-test.json") backend := newTestBackend() addr0, err := deploy(key0, big.NewInt(0), backend) if err != nil { t.Fatalf("deploy contract: expected no error, got %v", err) } chbook, err := NewChequebook(path, addr0, key0, backend) if err != nil { t.Fatalf("expected no error, got %v", err) } chbook.sent[addr1] = new(big.Int).SetUint64(42) amount := common.Big1 if _, err = chbook.Issue(addr1, amount); err == nil { t.Fatalf("expected insufficient funds error, got none") } chbook.balance = new(big.Int).Set(common.Big1) if chbook.Balance().Cmp(common.Big1) != 0 { t.Fatalf("expected: %v, got %v", "0", chbook.Balance()) } ch, err := chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } if chbook.Balance().Sign() != 0 { t.Errorf("expected: %v, got %v", "0", chbook.Balance()) } chbox, err := NewInbox(key1, addr0, addr1, &key0.PublicKey, backend) if err != nil { t.Fatalf("expected no error, got %v", err) } received, err := chbox.Receive(ch) if err != nil { t.Fatalf("expected no error, got %v", err) } if received.Cmp(big.NewInt(43)) != 0 { t.Errorf("expected: %v, got %v", "43", received) } } func TestCheckbookFile(t *testing.T) { path := filepath.Join(os.TempDir(), "chequebook-test.json") backend := newTestBackend() chbook, err := NewChequebook(path, addr0, key0, backend) if err != nil { t.Fatalf("expected no error, got %v", err) } chbook.sent[addr1] = new(big.Int).SetUint64(42) chbook.balance = new(big.Int).Set(common.Big1) chbook.Save() chbook, err = LoadChequebook(path, key0, backend, false) if err != nil { t.Fatalf("expected no error, got %v", err) } if chbook.Balance().Cmp(common.Big1) != 0 { t.Errorf("expected: %v, got %v", "0", chbook.Balance()) } var ch *Cheque if ch, err = chbook.Issue(addr1, common.Big1); err != nil { t.Fatalf("expected no error, got %v", err) } if ch.Amount.Cmp(new(big.Int).SetUint64(43)) != 0 { t.Errorf("expected: %v, got %v", "0", ch.Amount) } err = chbook.Save() if err != nil { t.Fatalf("expected no error, got %v", err) } } func TestVerifyErrors(t *testing.T) { path0 := filepath.Join(os.TempDir(), "chequebook-test-0.json") backend := newTestBackend() contr0, err := deploy(key0, common.Big2, backend) if err != nil { t.Errorf("expected no error, got %v", err) } chbook0, err := NewChequebook(path0, contr0, key0, backend) if err != nil { t.Errorf("expected no error, got %v", err) } path1 := filepath.Join(os.TempDir(), "chequebook-test-1.json") contr1, _ := deploy(key1, common.Big2, backend) chbook1, err := NewChequebook(path1, contr1, key1, backend) if err != nil { t.Errorf("expected no error, got %v", err) } chbook0.sent[addr1] = new(big.Int).SetUint64(42) chbook0.balance = new(big.Int).Set(common.Big2) chbook1.balance = new(big.Int).Set(common.Big1) amount := common.Big1 ch0, err := chbook0.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } time.Sleep(5) chbox, err := NewInbox(key1, contr0, addr1, &key0.PublicKey, backend) if err != nil { t.Fatalf("expected no error, got %v", err) } received, err := chbox.Receive(ch0) if err != nil { t.Fatalf("expected no error, got %v", err) } if received.Cmp(big.NewInt(43)) != 0 { t.Errorf("expected: %v, got %v", "43", received) } ch1, err := chbook0.Issue(addr2, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } received, err = chbox.Receive(ch1) t.Logf("correct error: %v", err) if err == nil { t.Fatalf("expected receiver error, got none") } ch2, err := chbook1.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } received, err = chbox.Receive(ch2) t.Logf("correct error: %v", err) if err == nil { t.Fatalf("expected sender error, got none") } _, err = chbook1.Issue(addr1, new(big.Int).SetInt64(-1)) t.Logf("correct error: %v", err) if err == nil { t.Fatalf("expected incorrect amount error, got none") } received, err = chbox.Receive(ch0) t.Logf("correct error: %v", err) if err == nil { t.Fatalf("expected incorrect amount error, got none") } } func TestDeposit(t *testing.T) { path0 := filepath.Join(os.TempDir(), "chequebook-test-0.json") backend := newTestBackend() contr0, _ := deploy(key0, new(big.Int), backend) chbook, err := NewChequebook(path0, contr0, key0, backend) if err != nil { t.Errorf("expected no error, got %v", err) } balance := new(big.Int).SetUint64(42) chbook.Deposit(balance) backend.Commit() if chbook.balance.Cmp(balance) != 0 { t.Fatalf("expected balance %v, got %v", balance, chbook.balance) } amount := common.Big1 _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() exp := new(big.Int).SetUint64(41) if chbook.balance.Cmp(exp) != 0 { t.Fatalf("expected balance %v, got %v", exp, chbook.balance) } // autodeposit on each issue chbook.AutoDeposit(0, balance, balance) _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() if chbook.balance.Cmp(balance) != 0 { t.Fatalf("expected balance %v, got %v", balance, chbook.balance) } // autodeposit off chbook.AutoDeposit(0, common.Big0, balance) _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() exp = new(big.Int).SetUint64(40) if chbook.balance.Cmp(exp) != 0 { t.Fatalf("expected balance %v, got %v", exp, chbook.balance) } // autodeposit every 10ms if new cheque issued interval := 30 * time.Millisecond chbook.AutoDeposit(interval, common.Big1, balance) _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() exp = new(big.Int).SetUint64(38) if chbook.balance.Cmp(exp) != 0 { t.Fatalf("expected balance %v, got %v", exp, chbook.balance) } time.Sleep(3 * interval) backend.Commit() if chbook.balance.Cmp(balance) != 0 { t.Fatalf("expected balance %v, got %v", balance, chbook.balance) } exp = new(big.Int).SetUint64(40) chbook.AutoDeposit(4*interval, exp, balance) _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } time.Sleep(3 * interval) backend.Commit() if chbook.balance.Cmp(exp) != 0 { t.Fatalf("expected balance %v, got %v", exp, chbook.balance) } _, err = chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } time.Sleep(1 * interval) backend.Commit() if chbook.balance.Cmp(balance) != 0 { t.Fatalf("expected balance %v, got %v", balance, chbook.balance) } chbook.AutoDeposit(1*interval, common.Big0, balance) chbook.Stop() _, err = chbook.Issue(addr1, common.Big1) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() _, err = chbook.Issue(addr1, common.Big2) if err != nil { t.Fatalf("expected no error, got %v", err) } time.Sleep(1 * interval) backend.Commit() exp = new(big.Int).SetUint64(39) if chbook.balance.Cmp(exp) != 0 { t.Fatalf("expected balance %v, got %v", exp, chbook.balance) } } func TestCash(t *testing.T) { path := filepath.Join(os.TempDir(), "chequebook-test.json") backend := newTestBackend() contr0, _ := deploy(key0, common.Big2, backend) chbook, err := NewChequebook(path, contr0, key0, backend) if err != nil { t.Errorf("expected no error, got %v", err) } chbook.sent[addr1] = new(big.Int).SetUint64(42) amount := common.Big1 chbook.balance = new(big.Int).Set(common.Big1) ch, err := chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() chbox, err := NewInbox(key1, contr0, addr1, &key0.PublicKey, backend) if err != nil { t.Fatalf("expected no error, got %v", err) } // cashing latest cheque if _, err = chbox.Receive(ch); err != nil { t.Fatalf("expected no error, got %v", err) } if _, err = ch.Cash(chbook.session); err != nil { t.Fatal("Cash failed:", err) } backend.Commit() chbook.balance = new(big.Int).Set(common.Big3) ch0, err := chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() ch1, err := chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() interval := 10 * time.Millisecond // setting autocash with interval of 10ms chbox.AutoCash(interval, nil) _, err = chbox.Receive(ch0) if err != nil { t.Fatalf("expected no error, got %v", err) } _, err = chbox.Receive(ch1) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() // expBalance := big.NewInt(2) // gotBalance := backend.BalanceAt(addr1) // if gotBalance.Cmp(expBalance) != 0 { // t.Fatalf("expected beneficiary balance %v, got %v", expBalance, gotBalance) // } // after 3x interval time and 2 cheques received, exactly one cashing tx is sent time.Sleep(4 * interval) backend.Commit() // expBalance = big.NewInt(4) // gotBalance = backend.BalanceAt(addr1) // if gotBalance.Cmp(expBalance) != 0 { // t.Fatalf("expected beneficiary balance %v, got %v", expBalance, gotBalance) // } // after stopping autocash no more tx are sent ch2, err := chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } chbox.Stop() _, err = chbox.Receive(ch2) if err != nil { t.Fatalf("expected no error, got %v", err) } time.Sleep(2 * interval) backend.Commit() // expBalance = big.NewInt(4) // gotBalance = backend.BalanceAt(addr1) // if gotBalance.Cmp(expBalance) != 0 { // t.Fatalf("expected beneficiary balance %v, got %v", expBalance, gotBalance) // } // autocash below 1 chbook.balance = big.NewInt(2) chbox.AutoCash(0, common.Big1) ch3, err := chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() // expBalance = big.NewInt(4) // gotBalance = backend.BalanceAt(addr1) // if gotBalance.Cmp(expBalance) != 0 { // t.Fatalf("expected beneficiary balance %v, got %v", expBalance, gotBalance) // } ch4, err := chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() _, err = chbox.Receive(ch3) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() _, err = chbox.Receive(ch4) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() // 2 checks of amount 1 received, exactly 1 tx is sent // expBalance = big.NewInt(6) // gotBalance = backend.BalanceAt(addr1) // if gotBalance.Cmp(expBalance) != 0 { // t.Fatalf("expected beneficiary balance %v, got %v", expBalance, gotBalance) // } // autochash on receipt when maxUncashed is 0 chbook.balance = new(big.Int).Set(common.Big2) chbox.AutoCash(0, common.Big0) ch5, err := chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() // expBalance = big.NewInt(5) // gotBalance = backend.BalanceAt(addr1) // if gotBalance.Cmp(expBalance) != 0 { // t.Fatalf("expected beneficiary balance %v, got %v", expBalance, gotBalance) // } ch6, err := chbook.Issue(addr1, amount) if err != nil { t.Fatalf("expected no error, got %v", err) } _, err = chbox.Receive(ch5) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() // expBalance = big.NewInt(4) // gotBalance = backend.BalanceAt(addr1) // if gotBalance.Cmp(expBalance) != 0 { // t.Fatalf("expected beneficiary balance %v, got %v", expBalance, gotBalance) // } _, err = chbox.Receive(ch6) if err != nil { t.Fatalf("expected no error, got %v", err) } backend.Commit() // expBalance = big.NewInt(6) // gotBalance = backend.BalanceAt(addr1) // if gotBalance.Cmp(expBalance) != 0 { // t.Fatalf("expected beneficiary balance %v, got %v", expBalance, gotBalance) // } }