contract addresses include hex prefix

- simplify resolver and tests
- added missing test for KeyToUrl
- fix notice error message and its test with !%x(MISSING)
- natspec test: insertTx modified - does not prepend 0x to contract address
- disable networking in e2e test

common/natspec/natspec.go

@@ -195,7 +195,7 @@ func (self *NatSpec) Notice() (notice string, err error) {
 	meth := self.makeAbi2method(abiKey)
 
 	if meth == nil {
-		err = fmt.Errorf("abi key %x does not match any method %v")
+		err = fmt.Errorf("abi key does not match any method")
 		return
 	}
 	notice, err = self.noticeForMethod(self.tx, meth.name, meth.Notice)

common/natspec/natspec_e2e_test.go

@@ -1,7 +1,6 @@
 package natspec
 
 import (
-	"fmt"
 	"io/ioutil"
 	"math/big"
 	"os"
@@ -40,7 +39,7 @@ const testFileName = "long_file_name_for_testing_registration_of_URLs_longer_tha
 
 const testNotice = "Register key `utils.toHex(_key)` <- content `utils.toHex(_content)`"
 const testExpNotice = "Register key 0xadd1a7d961cff0242089674ec2ef6fca671ab15e1fe80e38859fc815b98d88ab <- content 0xc00d5bcc872e17813df6ec5c646bb281a6e2d3b454c2c400c78192adf3344af9"
-const testExpNotice2 = `About to submit transaction (NatSpec notice error "abi key %!x(MISSING) does not match any method %!v(MISSING)"): {"id":6,"jsonrpc":"2.0","method":"eth_transact","params":[{"from":"0xe273f01c99144c438695e10f24926dc1f9fbf62d","to":"0xb737b91f8e95cf756766fc7c62c9a8ff58470381","value":"100000000000","gas":"100000","gasPrice":"100000","data":"0x31e12c20"}]}`
+const testExpNotice2 = `About to submit transaction (NatSpec notice error "abi key does not match any method"): {"id":6,"jsonrpc":"2.0","method":"eth_transact","params":[{"from":"0xe273f01c99144c438695e10f24926dc1f9fbf62d","to":"0xb737b91f8e95cf756766fc7c62c9a8ff58470381","value":"100000000000","gas":"100000","gasPrice":"100000","data":"0x31e12c20"}]}`
 const testExpNotice3 = `About to submit transaction (no NatSpec info found for contract): {"id":6,"jsonrpc":"2.0","method":"eth_transact","params":[{"from":"0xe273f01c99144c438695e10f24926dc1f9fbf62d","to":"0x8b839ad85686967a4f418eccc81962eaee314ac3","value":"100000000000","gas":"100000","gasPrice":"100000","data":"0x300a3bbfc00d5bcc872e17813df6ec5c646bb281a6e2d3b454c2c400c78192adf3344af900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000"}]}`
 
 const testUserDoc = `
@@ -106,27 +105,25 @@ func (f *testFrontend) ConfirmTransaction(tx string) bool {
 var port = 30300
 
 func testEth(t *testing.T) (ethereum *eth.Ethereum, err error) {
-	os.RemoveAll("/tmp/eth/")
-	err = os.MkdirAll("/tmp/eth/keys/e273f01c99144c438695e10f24926dc1f9fbf62d/", os.ModePerm)
+	os.RemoveAll("/tmp/eth-natspec/")
+	err = os.MkdirAll("/tmp/eth-natspec/keys/e273f01c99144c438695e10f24926dc1f9fbf62d/", os.ModePerm)
 	if err != nil {
 		t.Errorf("%v", err)
 		return
 	}
-	err = os.MkdirAll("/tmp/eth/data", os.ModePerm)
+	err = os.MkdirAll("/tmp/eth-natspec/data", os.ModePerm)
 	if err != nil {
 		t.Errorf("%v", err)
 		return
 	}
-	ks := crypto.NewKeyStorePlain("/tmp/eth/keys")
-	ioutil.WriteFile("/tmp/eth/keys/e273f01c99144c438695e10f24926dc1f9fbf62d/e273f01c99144c438695e10f24926dc1f9fbf62d",
+	ks := crypto.NewKeyStorePlain("/tmp/eth-natspec/keys")
+	ioutil.WriteFile("/tmp/eth-natspec/keys/e273f01c99144c438695e10f24926dc1f9fbf62d/e273f01c99144c438695e10f24926dc1f9fbf62d",
 		[]byte(`{"Id":"RhRXD+fNRKS4jx+7ZfEsNA==","Address":"4nPwHJkUTEOGleEPJJJtwfn79i0=","PrivateKey":"h4ACVpe74uIvi5Cg/2tX/Yrm2xdr3J7QoMbMtNX2CNc="}`), os.ModePerm)
 
 	port++
 	ethereum, err = eth.New(&eth.Config{
-		DataDir:        "/tmp/eth",
+		DataDir:        "/tmp/eth-natspec",
 		AccountManager: accounts.NewManager(ks),
-		Port:           fmt.Sprintf("%d", port),
-		MaxPeers:       10,
 		Name:           "test",
 	})
 
@@ -146,7 +143,7 @@ func testInit(t *testing.T) (self *testFrontend) {
 
 	ethereum, err := testEth(t)
 	if err != nil {
-		t.Errorf("error creating jsre, got %v", err)
+		t.Errorf("error creating ethereum: %v", err)
 		return
 	}
 	err = ethereum.Start()
@@ -193,7 +190,7 @@ func (self *testFrontend) insertTx(addr, contract, fnsig string, args []string)
 	jsontx := `
 [{
 	  "from": "` + addr + `",
-      "to": "0x` + contract + `",
+      "to": "` + contract + `",
 	  "value": "100000000000",
 	  "gas": "100000",
 	  "gasPrice": "100000",

common/resolver/resolver.go

@@ -32,8 +32,6 @@ func CreateContracts(xeth *xe.XEth, addr string) {
 	if err != nil {
 		panic(err)
 	}
-	URLHintContractAddress = URLHintContractAddress[2:]
-	HashRegContractAddress = HashRegContractAddress[2:]
 }
 
 type Resolver struct {
@@ -53,7 +51,7 @@ func New(eth Backend, uhca, nrca string) *Resolver {
 func (self *Resolver) KeyToContentHash(khash common.Hash) (chash common.Hash, err error) {
 	// look up in hashReg
 	key := storageAddress(storageMapping(storageIdx2Addr(1), khash[:]))
-	hash := self.backend.StorageAt("0x"+self.hashRegContractAddress, key)
+	hash := self.backend.StorageAt(self.hashRegContractAddress, key)
 
 	if hash == "0x0" || len(hash) < 3 {
 		err = fmt.Errorf("GetHashReg: content hash not found")
@@ -71,7 +69,7 @@ func (self *Resolver) ContentHashToUrl(chash common.Hash) (uri string, err error
 	for len(str) > 0 {
 		mapaddr := storageMapping(storageIdx2Addr(1), chash[:])
 		key := storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(idx)))
-		hex := self.backend.StorageAt("0x"+self.urlHintContractAddress, key)
+		hex := self.backend.StorageAt(self.urlHintContractAddress, key)
 		str = string(common.Hex2Bytes(hex[2:]))
 		l := len(str)
 		for (l > 0) && (str[l-1] == 0) {
@@ -126,5 +124,5 @@ func storageFixedArray(addr, idx []byte) []byte {
 }
 
 func storageAddress(addr []byte) string {
-	return "0x" + common.Bytes2Hex(addr)
+	return common.ToHex(addr)
 }

common/resolver/resolver_test.go

@@ -14,8 +14,8 @@ type testBackend struct {
 
 var (
 	text     = "test"
-	codehash = "1234" //common.RightPadString("1234", 64)
-	hash     = common.Bytes2Hex(crypto.Sha3([]byte(text)))
+	codehash = common.StringToHash("1234")
+	hash     = common.BytesToHash(crypto.Sha3([]byte(text)))
 	url      = "bzz://bzzhash/my/path/contr.act"
 )
 
@@ -23,17 +23,17 @@ func NewTestBackend() *testBackend {
 	self := &testBackend{}
 	self.contracts = make(map[string](map[string]string))
 
-	self.contracts["0x"+HashRegContractAddress] = make(map[string]string)
-	key := storageAddress(storageMapping(storageIdx2Addr(1), common.Hex2BytesFixed(codehash, 32)))
-	self.contracts["0x"+HashRegContractAddress][key] = "0x" + hash
+	self.contracts[HashRegContractAddress] = make(map[string]string)
+	key := storageAddress(storageMapping(storageIdx2Addr(1), codehash[:]))
+	self.contracts[HashRegContractAddress][key] = hash.Hex()
 
-	self.contracts["0x"+URLHintContractAddress] = make(map[string]string)
-	mapaddr := storageMapping(storageIdx2Addr(1), common.Hex2BytesFixed(hash, 32))
+	self.contracts[URLHintContractAddress] = make(map[string]string)
+	mapaddr := storageMapping(storageIdx2Addr(1), hash[:])
 
 	key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(0)))
-	self.contracts["0x"+URLHintContractAddress][key] = "0x" + common.Bytes2Hex([]byte(url))
+	self.contracts[URLHintContractAddress][key] = common.ToHex([]byte(url))
 	key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(1)))
-	self.contracts["0x"+URLHintContractAddress][key] = "0x00"
+	self.contracts[URLHintContractAddress][key] = "0x00"
 
 	return self
 }
@@ -50,15 +50,13 @@ func (self *testBackend) StorageAt(ca, sa string) (res string) {
 func TestKeyToContentHash(t *testing.T) {
 	b := NewTestBackend()
 	res := New(b, URLHintContractAddress, HashRegContractAddress)
-	chash := common.Hash{}
-	copy(chash[:], common.Hex2BytesFixed(codehash, 32))
 
-	got, err := res.KeyToContentHash(chash)
+	got, err := res.KeyToContentHash(codehash)
 	if err != nil {
 		t.Errorf("expected no error, got %v", err)
 	} else {
-		if common.Bytes2Hex(got[:]) != hash {
-			t.Errorf("incorrect result, expected %x, got %x: ", hash, common.Bytes2Hex(got[:]))
+		if got != hash {
+			t.Errorf("incorrect result, expected %x, got %x: ", hash.Hex(), got.Hex())
 		}
 	}
 }
@@ -66,17 +64,25 @@ func TestKeyToContentHash(t *testing.T) {
 func TestContentHashToUrl(t *testing.T) {
 	b := NewTestBackend()
 	res := New(b, URLHintContractAddress, HashRegContractAddress)
-	chash := common.Hash{}
-	copy(chash[:], common.Hex2BytesFixed(hash, 32))
-	got, err := res.ContentHashToUrl(chash)
+	got, err := res.ContentHashToUrl(hash)
 	if err != nil {
 		t.Errorf("expected no error, got %v", err)
 	} else {
-		if string(got[:]) != url {
-			t.Errorf("incorrect result, expected %v, got %s: ", url, string(got[:]))
+		if string(got) != url {
+			t.Errorf("incorrect result, expected %v, got %s: ", url, string(got))
 		}
 	}
 }
 
 func TestKeyToUrl(t *testing.T) {
+	b := NewTestBackend()
+	res := New(b, URLHintContractAddress, HashRegContractAddress)
+	got, _, err := res.KeyToUrl(codehash)
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	} else {
+		if string(got) != url {
+			t.Errorf("incorrect result, expected %v, got %s: ", url, string(got))
+		}
+	}
 }