Merge pull request #109 from renproject/feat/arbitrum

Added multichain apis for Arbitrum

chain/arbitrum/address.go

@@ -0,0 +1,33 @@
+package arbitrum
+
+import (
+	"github.com/renproject/multichain/chain/ethereum"
+)
+
+type (
+	// AddressEncodeDecoder re-exports ethereum.AddressEncodeDecoder.
+	AddressEncodeDecoder = ethereum.AddressEncodeDecoder
+
+	// AddressEncoder re-exports ethereum.AddressEncoder.
+	AddressEncoder = ethereum.AddressEncoder
+
+	// AddressDecoder re-exports ethereum.AddressDecoder.
+	AddressDecoder = ethereum.AddressDecoder
+
+	// Address re-exports ethereum.Address.
+	Address = ethereum.Address
+)
+
+var (
+	// NewAddressEncodeDecoder re-exports ethereum.NewAddressEncodeDecoder.
+	NewAddressEncodeDecoder = ethereum.NewAddressEncodeDecoder
+
+	// NewAddressDecoder re-exports ethereum.NewAddressDecoder.
+	NewAddressDecoder = ethereum.NewAddressDecoder
+
+	// NewAddressEncoder re-exports ethereum.NewAddressEncoder.
+	NewAddressEncoder = ethereum.NewAddressEncoder
+
+	// NewAddressFromHex re-exports ethereum.NewAddressFromHex.
+	NewAddressFromHex = ethereum.NewAddressFromHex
+)

chain/arbitrum/address_test.go

@@ -0,0 +1,105 @@
+package arbitrum_test
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	"github.com/renproject/multichain/chain/arbitrum"
+	"github.com/renproject/surge"
+	"testing/quick"
+)
+
+var _ = Describe("Address", func() {
+	Context("when unmarshaling and unmarshaling", func() {
+		It("should equal itself", func() {
+			f := func(x [20]byte) bool {
+				addr := arbitrum.Address(x)
+				Expect(addr.SizeHint()).To(Equal(20))
+
+				bytes, err := surge.ToBinary(addr)
+				Expect(err).ToNot(HaveOccurred())
+
+				var newAddr arbitrum.Address
+				err = surge.FromBinary(&newAddr, bytes)
+				Expect(err).ToNot(HaveOccurred())
+
+				Expect(addr).To(Equal(newAddr))
+				return true
+			}
+
+			err := quick.Check(f, nil)
+			Expect(err).ToNot(HaveOccurred())
+		})
+	})
+
+	Context("when unmarshaling and unmarshaling to/from JSON", func() {
+		It("should equal itself", func() {
+			f := func(x [20]byte) bool {
+				addr := arbitrum.Address(x)
+
+				bytes, err := json.Marshal(addr)
+				Expect(err).ToNot(HaveOccurred())
+
+				var newAddr arbitrum.Address
+				err = json.Unmarshal(bytes, &newAddr)
+				Expect(err).ToNot(HaveOccurred())
+
+				Expect(addr).To(Equal(newAddr))
+				return true
+			}
+
+			err := quick.Check(f, nil)
+			Expect(err).ToNot(HaveOccurred())
+		})
+
+		Context("when the address is invalid hex", func() {
+			It("should return an error", func() {
+				f := func(x [40]byte) bool {
+					bytes, err := json.Marshal(string(x[:]))
+					Expect(err).ToNot(HaveOccurred())
+
+					var newAddr arbitrum.Address
+					err = json.Unmarshal(bytes, &newAddr)
+					Expect(err).To(HaveOccurred())
+					return true
+				}
+
+				err := quick.Check(f, nil)
+				Expect(err).ToNot(HaveOccurred())
+			})
+		})
+
+		Context("when the address is invalid length", func() {
+			It("should return an error", func() {
+				f := func(x [10]byte) bool {
+					addr := hex.EncodeToString(x[:])
+					bytes, err := json.Marshal(addr)
+					Expect(err).ToNot(HaveOccurred())
+
+					var newAddr arbitrum.Address
+					err = json.Unmarshal(bytes, &newAddr)
+					Expect(err).To(HaveOccurred())
+					return true
+				}
+
+				err := quick.Check(f, nil)
+				Expect(err).ToNot(HaveOccurred())
+			})
+		})
+	})
+
+	Context("when unmarshalling random data", func() {
+		It("should not panic", func() {
+			f := func(x []byte) bool {
+				var addr arbitrum.Address
+				Expect(func() { addr.Unmarshal(x, surge.MaxBytes) }).ToNot(Panic())
+				Expect(func() { json.Unmarshal(x, &addr) }).ToNot(Panic())
+				return true
+			}
+
+			err := quick.Check(f, nil)
+			Expect(err).ToNot(HaveOccurred())
+		})
+	})
+})

chain/arbitrum/client.go

@@ -0,0 +1,17 @@
+package arbitrum
+
+import (
+	"github.com/renproject/multichain/chain/ethereum"
+)
+
+const (
+	// DefaultClientRPCURL is the RPC URL used by default, to interact with the
+	// arbitrum node.
+	DefaultClientRPCURL = "http://127.0.0.1:8547"
+)
+
+// Client re-exports ethereum.Client.
+type Client = ethereum.Client
+
+// NewClient re-exports ethereum.NewClient.
+var NewClient = ethereum.NewClient

chain/arbitrum/encode.go

@@ -0,0 +1,11 @@
+package arbitrum
+
+import (
+	"github.com/renproject/multichain/chain/ethereum"
+)
+
+// Payload re-exports ethereum.Payload.
+type Payload = ethereum.Payload
+
+// Encode re-exports ethereum.Encode.
+var Encode = ethereum.Encode