path: root/tests/init.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 tests implements execution of Ethereum JSON tests.
package tests

import (
    "encoding/json"
    "fmt"
    "io"
    "io/ioutil"
    "net/http"
    "os"
    "path/filepath"
)

var (
    baseDir            = filepath.Join(".", "files")
    blockTestDir       = filepath.Join(baseDir, "BlockchainTests")
    stateTestDir       = filepath.Join(baseDir, "StateTests")
    transactionTestDir = filepath.Join(baseDir, "TransactionTests")
    vmTestDir          = filepath.Join(baseDir, "VMTests")
    rlpTestDir         = filepath.Join(baseDir, "RLPTests")

    BlockSkipTests = []string{
        // These tests are not valid, as they are out of scope for RLP and
        // the consensus protocol.
        "BLOCK__RandomByteAtTheEnd",
        "TRANSCT__RandomByteAtTheEnd",
        "BLOCK__ZeroByteAtTheEnd",
        "TRANSCT__ZeroByteAtTheEnd",

        "ChainAtoChainB_blockorder2",
        "ChainAtoChainB_blockorder1",
    }

    /* Go client does not support transaction (account) nonces above 2^64. This
    technically breaks consensus but is regarded as "reasonable
    engineering constraint" as accounts cannot easily reach such high
    nonce values in practice
    */
    TransSkipTests = []string{"TransactionWithHihghNonce256"}
    StateSkipTests = []string{}
    VmSkipTests    = []string{}
)

func readJson(reader io.Reader, value interface{}) error {
    data, err := ioutil.ReadAll(reader)
    if err != nil {
        return fmt.Errorf("error reading JSON file: %v", err)
    }
    if err = json.Unmarshal(data, &value); err != nil {
        if syntaxerr, ok := err.(*json.SyntaxError); ok {
            line := findLine(data, syntaxerr.Offset)
            return fmt.Errorf("JSON syntax error at line %v: %v", line, err)
        }
        return fmt.Errorf("JSON unmarshal error: %v", err)
    }
    return nil
}

func readJsonHttp(uri string, value interface{}) error {
    resp, err := http.Get(uri)
    if err != nil {
        return err
    }
    defer resp.Body.Close()

    err = readJson(resp.Body, value)
    if err != nil {
        return err
    }
    return nil
}

func readJsonFile(fn string, value interface{}) error {
    file, err := os.Open(fn)
    if err != nil {
        return err
    }
    defer file.Close()

    err = readJson(file, value)
    if err != nil {
        return fmt.Errorf("%s in file %s", err.Error(), fn)
    }
    return nil
}

// findLine returns the line number for the given offset into data.
func findLine(data []byte, offset int64) (line int) {
    line = 1
    for i, r := range string(data) {
        if int64(i) >= offset {
            return
        }
        if r == '\n' {
            line++
        }
    }
    return
}