token-price-oracles/test/helpers/increaseTime.js

tools for creating token price data feeds and oracles that integrate with on-chain dex's

module.exports = async function increaseTime(duration) {
  const id = Date.now()

  return new Promise((resolve, reject) => {
    web3.currentProvider.sendAsync({
      jsonrpc: '2.0',
      method: 'evm_increaseTime',
      params: [duration],
      id: Date.now(),
    }, err1 => {
      if (err1) { return reject(err1) }

      web3.currentProvider.sendAsync({
        jsonrpc: '2.0',
        method: 'evm_mine',
        id: Date.now() + 1,
      }, (err2, res) => {
        err2 ? reject(err2) : resolve(res)
      })
    })
  })
}