path: root/common/resolver/resolver_test.go

package resolver

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.Sha3([]byte(text)))
    url      = "bzz://bzzhash/my/path/contr.act"
)

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

    self.contracts[HashRegContractAddress] = make(map[string]string)
    key := storageAddress(storageMapping(storageIdx2Addr(1), codehash[:]))
    self.contracts[HashRegContractAddress][key] = hash.Hex()

    self.contracts[URLHintContractAddress] = make(map[string]string)
    mapaddr := storageMapping(storageIdx2Addr(1), hash[:])

    key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(0)))
    self.contracts[URLHintContractAddress][key] = common.ToHex([]byte(url))
    key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(1)))
    self.contracts[URLHintContractAddress][key] = "0x00"

    return self
}

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

func TestKeyToContentHash(t *testing.T) {
    b := NewTestBackend()
    res := New(b, URLHintContractAddress, HashRegContractAddress)

    got, err := res.KeyToContentHash(codehash)
    if err != nil {
        t.Errorf("expected no error, got %v", err)
    } else {
        if got != hash {
            t.Errorf("incorrect result, expected %x, got %x: ", hash.Hex(), got.Hex())
        }
    }
}

func TestContentHashToUrl(t *testing.T) {
    b := NewTestBackend()
    res := New(b, URLHintContractAddress, HashRegContractAddress)
    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))
        }
    }
}

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))
        }
    }
}