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start_warp

fn start_warp(block_timestamp: felt252, target_contract_address: felt252) -> Result::<(), felt252> nopanic;

Sets a block timestamp for a deployed contract, until stop_warp is called.

  • block_timestamp - value of the timestamp
  • target_contract_address - address of the deployed contract, for which the block timestamp will be set.
note

The default block_timestamp value in tests is set to 0 for every contract.

Usage example​

Tested contract​

simple contract
#[contract]
mod MinimalContract {
    use starknet::info::get_block_info;
    use box::BoxTrait;

    #[view]
    fn check_timestamp() -> u64 {
        get_block_info().unbox().block_timestamp
    }
}

Test file​

Example test
use array::ArrayTrait;
use result::ResultTrait;

#[test]
fn test_start_warp_simple() {
    let deployed_contract_address = deploy_contract('simple', ArrayTrait::new()).unwrap();
    assert(deployed_contract_address != 0, 'deployed_contract_address != 0');

    let result = call(deployed_contract_address, 'check_timestamp', ArrayTrait::new()).unwrap();
    assert(*result.at(0_u32) == 0, *result.at(0_u32));

    start_warp(100, deployed_contract_address);
    let result = call(deployed_contract_address, 'check_timestamp', ArrayTrait::new()).unwrap();
    assert(*result.at(0_u32) == 100, *result.at(0_u32));
}