tokyo-solidity-template/test_1_out/test/helpers/increaseTime.js

Make solidity contract based on user input

import latestTime from "./latestTime";

// Increases testrpc time by the passed duration in seconds
export default function increaseTime(duration) {
  const id = Date.now();

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

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

/**
 * Beware that due to the need of calling two separate testrpc methods and rpc calls overhead
 * it's hard to increase time precisely to a target point so design your test to tolerate
 * small fluctuations from time to time.
 *
 * @param target time in seconds
 */
export function increaseTimeTo(target) {
  const now = latestTime().unix();
  if (target < now) {
    throw Error(`Cannot increase current time(${ now }) to a moment in the past(${ target })`);
  }
  const diff = target - now;
  return increaseTime(diff);
}

export const duration = {
  seconds(val) {
    return val;
  },
  minutes(val) {
    return val * this.seconds(60);
  },
  hours(val) {
    return val * this.minutes(60);
  },
  days(val) {
    return val * this.hours(24);
  },
  weeks(val) {
    return val * this.days(7);
  },
};