You can force-produce blocks using the produceBlocks helper to achieve an arbitrary block height. This is especially useful when you want to do some testing regarding transaction maturity.
const provider = await Provider.create(FUEL_NETWORK_URL);
const block = await provider.getBlock('latest');
if (!block) {
throw new Error('No latest block');
}
const { time: timeLastBlockProduced } = block;
const amountOfBlocksToProduce = 3;
const producedBlockHeigh = await provider.produceBlocks(amountOfBlocksToProduce);
const producedBlock = await provider.getBlock(producedBlockHeigh.toNumber());
expect(producedBlock).toBeDefined();
const oldest = new Date(fromTai64ToDate(timeLastBlockProduced || ''));
const newest = new Date(fromTai64ToDate(producedBlock?.time || ''));
expect(newest >= oldest).toBeTruthy(); You can also produce blocks with a custom block time using the produceBlocks helper by specifying the second optional parameter.
const lastBlockTimestamp = fromTai64ToUnix(latestBlock.time);
const latestBlockNumber = await provider.produceBlocks(3, lastBlockTimestamp + 1000);