path: root/common/registrar/registrar_test.go

// Copyright 2015 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 <http://www.gnu.org/licenses/>.

package registrar

import (
    "testing"

    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/crypto"
)

type testBackend struct {
    // contracts mock
    contracts map[string](map[string]string)
}

var (
    text     = "test"
    codehash = common.StringToHash("1234")
    hash     = common.BytesToHash(crypto.Keccak256([]byte(text)))
    url      = "bzz://bzzhash/my/path/contr.act"
)

func NewTestBackend() *testBackend {
    self := &testBackend{}
    self.contracts = make(map[string](map[string]string))
    return self
}

func (self *testBackend) initHashReg() {
    self.contracts[HashRegAddr[2:]] = make(map[string]string)
    key := storageAddress(storageMapping(storageIdx2Addr(1), codehash[:]))
    self.contracts[HashRegAddr[2:]][key] = hash.Hex()
}

func (self *testBackend) initUrlHint() {
    self.contracts[UrlHintAddr[2:]] = make(map[string]string)
    mapaddr := storageMapping(storageIdx2Addr(1), hash[:])

    key := storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(0)))
    self.contracts[UrlHintAddr[2:]][key] = common.ToHex([]byte(url))
    key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(1)))
    self.contracts[UrlHintAddr[2:]][key] = "0x0"
}

func (self *testBackend) StorageAt(ca, sa string) (res string) {
    c := self.contracts[ca]
    if c == nil {
        return "0x0"
    }
    res = c[sa]
    return
}

func (self *testBackend) Transact(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
    return "", nil
}

func (self *testBackend) Call(fromStr, toStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, string, error) {
    return "", "", nil
}

func TestSetGlobalRegistrar(t *testing.T) {
    b := NewTestBackend()
    res := New(b)
    _, err := res.SetGlobalRegistrar("addresshex", common.BigToAddress(common.Big1))
    if err != nil {
        t.Errorf("unexpected error: %v'", err)
    }
}

func TestHashToHash(t *testing.T) {
    b := NewTestBackend()
    res := New(b)

    HashRegAddr = "0x0"
    got, err := res.HashToHash(codehash)
    if err == nil {
        t.Errorf("expected error")
    } else {
        exp := "HashReg address is not set"
        if err.Error() != exp {
            t.Errorf("incorrect error, expected '%v', got '%v'", exp, err.Error())
        }
    }

    HashRegAddr = common.BigToAddress(common.Big1).Hex() //[2:]
    got, err = res.HashToHash(codehash)
    if err == nil {
        t.Errorf("expected error")
    } else {
        exp := "HashToHash: content hash not found for '" + codehash.Hex() + "'"
        if err.Error() != exp {
            t.Errorf("incorrect error, expected '%v', got '%v'", exp, err.Error())
        }
    }

    b.initHashReg()
    got, err = res.HashToHash(codehash)
    if err != nil {
        t.Errorf("expected no error, got %v", err)
    } else {
        if got != hash {
            t.Errorf("incorrect result, expected '%v', got '%v'", hash.Hex(), got.Hex())
        }
    }
}

func TestHashToUrl(t *testing.T) {
    b := NewTestBackend()
    res := New(b)

    UrlHintAddr = "0x0"
    got, err := res.HashToUrl(hash)
    if err == nil {
        t.Errorf("expected error")
    } else {
        exp := "UrlHint address is not set"
        if err.Error() != exp {
            t.Errorf("incorrect error, expected '%v', got '%v'", exp, err.Error())
        }
    }

    UrlHintAddr = common.BigToAddress(common.Big2).Hex() //[2:]
    got, err = res.HashToUrl(hash)
    if err == nil {
        t.Errorf("expected error")
    } else {
        exp := "HashToUrl: URL hint not found for '" + hash.Hex() + "'"
        if err.Error() != exp {
            t.Errorf("incorrect error, expected '%v', got '%v'", exp, err.Error())
        }
    }

    b.initUrlHint()
    got, err = res.HashToUrl(hash)
    if err != nil {
        t.Errorf("expected no error, got %v", err)
    } else {
        if got != url {
            t.Errorf("incorrect result, expected '%v', got '%s'", url, got)
        }
    }
}