path: root/common/natspec/natspec_e2e_test.go

package natspec

import (
    "fmt"
    "io/ioutil"
    "os"
    "strings"
    "testing"

    "github.com/ethereum/go-ethereum/accounts"
    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/common/docserver"
    "github.com/ethereum/go-ethereum/common/resolver"
    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/core/state"
    "github.com/ethereum/go-ethereum/crypto"
    "github.com/ethereum/go-ethereum/eth"
    xe "github.com/ethereum/go-ethereum/xeth"
)

const (
    testBalance = "10000000000000000000"

    testFileName = "long_file_name_for_testing_registration_of_URLs_longer_than_32_bytes.content"

    testNotice = "Register key `utils.toHex(_key)` <- content `utils.toHex(_content)`"

    testExpNotice = "Register key 0xadd1a7d961cff0242089674ec2ef6fca671ab15e1fe80e38859fc815b98d88ab <- content 0xb3a2dea218de5d8bbe6c4645aadbf67b5ab00ecb1a9ec95dbdad6a0eed3e41a7"

    testExpNotice2 = `About to submit transaction (NatSpec notice error: abi key does not match any method): {"params":[{"to":"%s","data": "0x31e12c20"}]}`

    testExpNotice3 = `About to submit transaction (no NatSpec info found for contract: content hash not found for '0x1392c62d05b2d149e22a339c531157ae06b44d39a674cce500064b12b9aeb019'): {"params":[{"to":"%s","data": "0x300a3bbfb3a2dea218de5d8bbe6c4645aadbf67b5ab00ecb1a9ec95dbdad6a0eed3e41a7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066696c653a2f2f2f746573742e636f6e74656e74"}]}`
)

const (
    testUserDoc = `
{
  "methods": {
    "register(uint256,uint256)": {
      "notice":  "` + testNotice + `"
    }
  },
  "invariants": [
    { "notice": "" }
  ],
  "construction": [
    { "notice": "" }
  ]
}
`
    testAbiDefinition = `
[{
  "name": "register",
  "constant": false,
  "type": "function",
  "inputs": [{
    "name": "_key",
    "type": "uint256"
  }, {
    "name": "_content",
    "type": "uint256"
  }],
  "outputs": []
}]
`

    testContractInfo = `
{
    "userDoc": ` + testUserDoc + `,
    "abiDefinition": ` + testAbiDefinition + `
}
`
)

type testFrontend struct {
    t *testing.T
    // resolver    *resolver.Resolver
    ethereum    *eth.Ethereum
    xeth        *xe.XEth
    coinbase    common.Address
    stateDb     *state.StateDB
    txc         uint64
    lastConfirm string
    wantNatSpec bool
}

func (self *testFrontend) UnlockAccount(acc []byte) bool {
    self.ethereum.AccountManager().Unlock(common.BytesToAddress(acc), "password")
    return true
}

func (self *testFrontend) ConfirmTransaction(tx string) bool {
    if self.wantNatSpec {
        ds, err := docserver.New("/tmp/")
        if err != nil {
            self.t.Errorf("Error creating DocServer: %v", err)
        }
        self.lastConfirm = GetNotice(self.xeth, tx, ds)
    }
    return true
}

func testEth(t *testing.T) (ethereum *eth.Ethereum, err error) {

    os.RemoveAll("/tmp/eth-natspec/")

    err = os.MkdirAll("/tmp/eth-natspec/keystore", os.ModePerm)
    if err != nil {
        panic(err)
    }

    // create a testAddress
    ks := crypto.NewKeyStorePassphrase("/tmp/eth-natspec/keystore")
    am := accounts.NewManager(ks)
    testAccount, err := am.NewAccount("password")
    if err != nil {
        panic(err)
    }
    testAddress := strings.TrimPrefix(testAccount.Address.Hex(), "0x")

    // set up mock genesis with balance on the testAddress
    core.GenesisAccounts = []byte(`{
    "` + testAddress + `": {"balance": "` + testBalance + `"}
    }`)

    // only use minimalistic stack with no networking
    ethereum, err = eth.New(&eth.Config{
        DataDir:        "/tmp/eth-natspec",
        AccountManager: am,
        MaxPeers:       0,
    })

    if err != nil {
        panic(err)
    }

    return
}

func testInit(t *testing.T) (self *testFrontend) {
    // initialise and start minimal ethereum stack
    ethereum, err := testEth(t)
    if err != nil {
        t.Errorf("error creating ethereum: %v", err)
        return
    }
    err = ethereum.Start()
    if err != nil {
        t.Errorf("error starting ethereum: %v", err)
        return
    }

    // mock frontend
    self = &testFrontend{t: t, ethereum: ethereum}
    self.xeth = xe.New(ethereum, self)

    addr, _ := ethereum.Etherbase()
    self.coinbase = addr
    self.stateDb = self.ethereum.ChainManager().State().Copy()

    // initialise the registry contracts
    // self.resolver.CreateContracts(addr)
    resolver.New(self.xeth).CreateContracts(addr)
    self.applyTxs()
    // t.Logf("HashReg contract registered at %v", resolver.HashRegContractAddress)
    // t.Logf("URLHint contract registered at %v", resolver.UrlHintContractAddress)

    return

}

// this is needed for transaction to be applied to the state in testing
// the heavy lifing is done in XEth.ApplyTestTxs
// this is fragile,
// and does process leaking since xeth loops cannot quit safely
// should be replaced by proper mining with testDAG for easy full integration tests
func (self *testFrontend) applyTxs() {
    self.txc, self.xeth = self.xeth.ApplyTestTxs(self.stateDb, self.coinbase, self.txc)
    return
}

// end to end test
func TestNatspecE2E(t *testing.T) {
    // t.Skip()

    tf := testInit(t)
    defer tf.ethereum.Stop()

    // create a contractInfo file (mock cloud-deployed contract metadocs)
    // incidentally this is the info for the registry contract itself
    ioutil.WriteFile("/tmp/"+testFileName, []byte(testContractInfo), os.ModePerm)
    dochash := common.BytesToHash(crypto.Sha3([]byte(testContractInfo)))

    // take the codehash for the contract we wanna test
    // codehex := tf.xeth.CodeAt(resolver.HashRegContractAddress)
    codeb := tf.xeth.CodeAtBytes(resolver.HashRegContractAddress)
    codehash := common.BytesToHash(crypto.Sha3(codeb))

    // use resolver to register codehash->dochash->url
    registry := resolver.New(tf.xeth)
    _, err := registry.Register(tf.coinbase, codehash, dochash, "file:///"+testFileName)
    if err != nil {
        t.Errorf("error registering: %v", err)
    }
    // apply txs to the state
    tf.applyTxs()

    // NatSpec info for register method of HashReg contract installed
    // now using the same transactions to check confirm messages

    tf.wantNatSpec = true // this is set so now the backend uses natspec confirmation
    _, err = registry.RegisterContentHash(tf.coinbase, codehash, dochash)
    if err != nil {
        t.Errorf("error calling contract registry: %v", err)
    }

    if tf.lastConfirm != testExpNotice {
        t.Errorf("Wrong confirm message. expected '%v', got '%v'", testExpNotice, tf.lastConfirm)
    }

    // test unknown method
    exp := fmt.Sprintf(testExpNotice2, resolver.HashRegContractAddress)
    _, err = registry.SetOwner(tf.coinbase)
    if err != nil {
        t.Errorf("error setting owner: %v", err)
    }

    if tf.lastConfirm != exp {
        t.Errorf("Wrong confirm message, expected '%v', got '%v'", exp, tf.lastConfirm)
    }

    // test unknown contract
    exp = fmt.Sprintf(testExpNotice3, resolver.UrlHintContractAddress)

    _, err = registry.RegisterUrl(tf.coinbase, dochash, "file:///test.content")
    if err != nil {
        t.Errorf("error registering: %v", err)
    }

    if tf.lastConfirm != exp {
        t.Errorf("Wrong confirm message, expected '%v', got '%v'", exp, tf.lastConfirm)
    }

}