add: write tx methods and tests

- add ci for testing
- coveralls for coverage

.github/depandabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/workflows/go.yml

@@ -0,0 +1,22 @@
+name: Go
+
+on:
+  - push
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v3
+        with:
+          go-version: 1.18
+      - uses: actions/checkout@v2
+      - name: go test
+        run: go test -v -covermode atomic -coverprofile=covprofile ./...
+      - name: install goveralls
+        run: go install github.com/mattn/goveralls@latest
+      - name: send coverage
+        env:
+          COVERALLS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: goveralls -coverprofile=covprofile -service=github

.gitignore

@@ -0,0 +1 @@
+covprofile

cic_net/cic_net.go

@@ -1,13 +1,28 @@
 package cic_net
 
 import (
+	"crypto/ecdsa"
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/lmittmann/w3"
+	"math/big"
+)
+
+const (
+	kitabuMainnetChainId = 6060
 )
 
 type CicNet struct {
 	ethClient    *w3.Client
 	tokenIndex   common.Address
+	kitabuSigner types.Signer
+}
+
+type WriteTx struct {
+	from       common.Address
+	to         common.Address
+	gasLimit   uint64
+	privateKey ecdsa.PrivateKey
 }
 
 func NewCicNet(rpcEndpoint string, tokenIndex common.Address) (*CicNet, error) {
@@ -19,6 +34,7 @@ func NewCicNet(rpcEndpoint string, tokenIndex common.Address) (*CicNet, error) {
 	return &CicNet{
 		ethClient:    ethClient,
 		tokenIndex:   tokenIndex,
+		kitabuSigner: types.NewEIP155Signer(big.NewInt(kitabuMainnetChainId)),
 	}, nil
 }
 

cic_net/cic_net_test.go

@@ -1,15 +1,32 @@
 package cic_net
 
 import (
+	"github.com/lmittmann/w3"
 	"os"
+	"testing"
 )
 
 type tConfig struct {
 	rpcProvider string
 	tokenIndex  string
+	privateKey  string
 }
 
 var conf = &tConfig{
 	rpcProvider: os.Getenv("RPC_PROVIDER"),
 	tokenIndex:  os.Getenv("TOKEN_INDEX"),
+	privateKey:  os.Getenv("PRIVATE_KEY"),
+}
+
+func TestCicNet_Connect(t *testing.T) {
+	name := "Test RPC connection"
+	wantErr := false
+
+	t.Run(name, func(t *testing.T) {
+		cicnet, _ := NewCicNet(conf.rpcProvider, w3.A(conf.tokenIndex))
+
+		if err := cicnet.Close(); (err != nil) != wantErr {
+			t.Errorf("EntryCount() error = %v, wantErr %v", err, wantErr)
+		}
+	})
 }

cic_net/erc20_demurrage_token.go

@@ -77,3 +77,33 @@ func (c *CicNet) BaseBalanceOf(ctx context.Context, tokenAddress common.Address,
 
 	return balance, nil
 }
+
+func (c *CicNet) ChangePeriod(ctx context.Context, txData WriteTx) (common.Hash, error) {
+	sig := w3.MustNewFunc("changePeriod()", "bool")
+	input, err := sig.EncodeArgs()
+	if err != nil {
+		return [32]byte{}, err
+	}
+
+	txHash, err := c.signAndCall(ctx, input, txData)
+	if err != nil {
+		return [32]byte{}, err
+	}
+
+	return txHash, nil
+}
+
+func (c *CicNet) ApplyDemurrageLimited(ctx context.Context, rounds int64, txData WriteTx) (common.Hash, error) {
+	sig := w3.MustNewFunc("applyDemurrageLimited(uint256 _rounds)", "bool")
+	input, err := sig.EncodeArgs(big.NewInt(rounds))
+	if err != nil {
+		return [32]byte{}, err
+	}
+
+	txHash, err := c.signAndCall(ctx, input, txData)
+	if err != nil {
+		return [32]byte{}, err
+	}
+
+	return txHash, nil
+}

cic_net/erc20_demurrage_token_test.go

@@ -2,7 +2,9 @@ package cic_net
 
 import (
 	"context"
+	"crypto/ecdsa"
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/lmittmann/w3"
 	"math/big"
 	"testing"
@@ -131,3 +133,119 @@ func TestCicNet_DemurrageToken_BaseBalanceOf(t *testing.T) {
 		})
 	}
 }
+
+func TestCicNet_DemurrageToken_ChangePeriod(t *testing.T) {
+	type args struct {
+		writeTx WriteTx
+	}
+
+	// Bootstrap signer
+	privateKey, err := crypto.HexToECDSA(conf.privateKey)
+	if err != nil {
+		t.Fatalf("ECDSA error = %v", err)
+	}
+	publicKey := privateKey.Public()
+	publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
+	if !ok {
+		t.Fatalf("ECDSA error = %v", err)
+	}
+	fromAddress := crypto.PubkeyToAddress(*publicKeyECDSA)
+
+	tests := []struct {
+		name       string
+		args       args
+		wantErr    bool
+		balanceGte big.Int
+	}{
+		{
+			name: "ChangePeriod for Sarafu",
+			args: args{
+				writeTx: WriteTx{
+					from:       fromAddress,
+					to:         w3.A("0xaB89822F31c2092861F713F6F34bd6877a8C1878"),
+					gasLimit:   12000000,
+					privateKey: *privateKey,
+				},
+			},
+			wantErr: false,
+		},
+	}
+
+	for _, testcase := range tests {
+		tt := testcase
+
+		t.Run(tt.name, func(t *testing.T) {
+			cicnet, err := NewCicNet(conf.rpcProvider, w3.A(conf.tokenIndex))
+
+			if err != nil {
+				t.Fatalf("NewCicNet error = %v", err)
+			}
+
+			tx, err := cicnet.ChangePeriod(context.Background(), tt.args.writeTx)
+			t.Logf("ChangePeriod tx_hash %s", tx.String())
+
+			if (err != nil) != tt.wantErr {
+				t.Errorf("ChangePeriod() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
+
+func TestCicNet_DemurrageToken_ApplyDemurrageLimited(t *testing.T) {
+	type args struct {
+		rounds  int64
+		writeTx WriteTx
+	}
+
+	// Bootstrap signer
+	privateKey, err := crypto.HexToECDSA(conf.privateKey)
+	if err != nil {
+		t.Fatalf("ECDSA error = %v", err)
+	}
+	publicKey := privateKey.Public()
+	publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
+	if !ok {
+		t.Fatalf("ECDSA error = %v", err)
+	}
+	fromAddress := crypto.PubkeyToAddress(*publicKeyECDSA)
+
+	tests := []struct {
+		name       string
+		args       args
+		wantErr    bool
+		balanceGte big.Int
+	}{
+		{
+			name: "ChangePeriod for Sarafu",
+			args: args{
+				rounds: 1000,
+				writeTx: WriteTx{
+					from:       fromAddress,
+					to:         w3.A("0xaB89822F31c2092861F713F6F34bd6877a8C1878"),
+					gasLimit:   12000000,
+					privateKey: *privateKey,
+				},
+			},
+			wantErr: false,
+		},
+	}
+
+	for _, testcase := range tests {
+		tt := testcase
+
+		t.Run(tt.name, func(t *testing.T) {
+			cicnet, err := NewCicNet(conf.rpcProvider, w3.A(conf.tokenIndex))
+
+			if err != nil {
+				t.Fatalf("NewCicNet error = %v", err)
+			}
+
+			tx, err := cicnet.ApplyDemurrageLimited(context.Background(), tt.args.rounds, tt.args.writeTx)
+			t.Logf("ApplyDemurrageLimited tx_hash %s", tx.String())
+
+			if (err != nil) != tt.wantErr {
+				t.Errorf("ApplyDemurrageLimited() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}

cic_net/util.go

@@ -0,0 +1,50 @@
+package cic_net
+
+import (
+	"context"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/lmittmann/w3/module/eth"
+	"math/big"
+)
+
+func (c *CicNet) latestNonce(ctx context.Context, address common.Address) (uint64, error) {
+	var nonce uint64
+
+	err := c.ethClient.CallCtx(
+		ctx,
+		eth.Nonce(address, nil).Returns(&nonce),
+	)
+	if err != nil {
+		return 0, err
+	}
+
+	return nonce, nil
+}
+
+func (c *CicNet) signAndCall(ctx context.Context, input []byte, txData WriteTx) (common.Hash, error) {
+	var txHash common.Hash
+
+	nonce, err := c.latestNonce(ctx, txData.from)
+	if err != nil {
+		return [32]byte{}, err
+	}
+
+	tx, err := types.SignNewTx(&txData.privateKey, c.kitabuSigner, &types.LegacyTx{
+		To:       &txData.to,
+		Nonce:    nonce,
+		Data:     input,
+		Gas:      txData.gasLimit,
+		GasPrice: big.NewInt(1),
+	})
+
+	err = c.ethClient.CallCtx(
+		ctx,
+		eth.SendTransaction(tx).Returns(&txHash),
+	)
+	if err != nil {
+		return [32]byte{}, err
+	}
+
+	return txHash, nil
+}