From 9828fa335ea0e52da96c7339854970df33027d65 Mon Sep 17 00:00:00 2001 From: Alex Browne Date: Mon, 16 Jul 2018 18:28:47 -0700 Subject: Fix bugs having to do with block timestamps and order expirationTimes --- packages/contracts/test/utils/block_timestamp.ts | 40 ++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 packages/contracts/test/utils/block_timestamp.ts (limited to 'packages/contracts/test/utils/block_timestamp.ts') diff --git a/packages/contracts/test/utils/block_timestamp.ts b/packages/contracts/test/utils/block_timestamp.ts new file mode 100644 index 000000000..1159792c4 --- /dev/null +++ b/packages/contracts/test/utils/block_timestamp.ts @@ -0,0 +1,40 @@ +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 { + 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; +} + +/** + * Returns the timestamp of the latest block in seconds since the Unix epoch. + * @returns a new Promise which will resolve with the timestamp in seconds. + */ +export async function getLatestBlockTimestampAsync(): Promise { + const currentBlock = await web3Wrapper.getBlockAsync('latest'); + return currentBlock.timestamp; +} -- cgit v1.2.3