git ssb

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const Environment = require('./environment.js')
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const U256 = require('./u256.js')
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const Address = require('./address.js')
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const BN = require('bn.js')
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module.exports = class TestEnvironment extends Environment {
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  constructor (data) {
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    super()
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    if (typeof data === 'string') {
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      data = JSON.parse(data)
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    }
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    let self = this
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    if (data.accounts) {
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      data.accounts.forEach((account) => {
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        let tmp = account[1]
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        self.state.set(new Address(new Uint8Array(account[0])).toString(), {
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          balance: new U256(new BN(tmp.balance, 16, 'le'))
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        })
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      })
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    }
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    if (data.address) {
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      self.address = new Address(new Uint8Array(data.address))
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    }
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    if (data.origin) {
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      self.origin = new Address(new Uint8Array(data.origin))
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    }
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    if (data.caller) {
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      self.caller = new Address(new Uint8Array(data.caller))
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    }
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    if (data.coinbase) {
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      self.coinbase = new Uint8Array(data.coinbase)
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    }
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    if (data.callValue) {
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      self.callValue = new U256(data.callValue)
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    }
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    if (data.callData) {
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      self.callData = hexStr2arrayBuf(data.callData)
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    }
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    if (data.gasPrice) {
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      self.gasPrice = data.gasPrice
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    }
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    if (data.gasLimit) {
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      self.gasLimit = data.gasLimit
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    }
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  }
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}
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function hexStr2arrayBuf (string) {
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  const view = new Uint8Array(string.length / 2)
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  string = [...string]
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  let temp = ''
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  string.forEach((el, i) => {
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    temp += el
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    if (i % 2) {
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      view[(i + 1) / 2 - 1] = parseInt(temp, 16)
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      temp = ''
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    }
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  })
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  return view
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}
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