aboutsummaryrefslogtreecommitdiffstats
path: root/packages/contracts/test/utils/increase_time.ts
blob: 4565d8dbc5c1753b7490938c0075b733c9d2c4a2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
import * as _ from 'lodash';

import { constants } from './constants';
import { web3Wrapper } from './web3_wrapper';

let firstAccount: string | undefined;

/**
 * Increases time by the given number of seconds and then mines a block so that
 * the current block timestamp has the offset applied.
 * @param seconds the number of seconds by which to incrase the time offset.
 * @returns a new Promise which will resolve with the new total time offset or
 * reject if the time could not be increased.
 */
export async function increaseTimeAndMineBlockAsync(seconds: number): Promise<number> {
    if (_.isUndefined(firstAccount)) {
        const accounts = await web3Wrapper.getAvailableAddressesAsync();
        firstAccount = accounts[0];
    }

    const offset = await web3Wrapper.increaseTimeAsync(seconds);
    // Note: we need to send a transaction after increasing time so
    // that a block is actually mined. The contract looks at the
    // last mined block for the timestamp.
    await web3Wrapper.awaitTransactionSuccessAsync(
        await web3Wrapper.sendTransactionAsync({ from: firstAccount, to: firstAccount, value: 0 }),
        constants.AWAIT_TRANSACTION_MINED_MS,
    );

    return offset;
}