Ethereum Error: 900000 ms timeouts are over

As a developer, in cooperation with Ethereum-based intelligent contracts, the “900000 ms timeout may exceed” error while running unit tests for the lottery contract. This problem can occur if the test case is too slow to complete within the designated time frame.

Understand the error

The error message suggests that there was a time limit as the execution time lasts longer than expected (900000 ms). However, this is not necessarily related to the code quality or efficiency of the test case. Many factors can cause this problem:

• Network Delay : A smart contract can run on a slow network connection, which leads to delays in testing.

• High computational load : Running complex simulations or producing large amounts of data can consume significant CPUs and memory sources, which can cause the test time.

• ASYNC Operations : The test case can result in asynchronous operations (such as web3 RPC calls, I/O-bound tasks) that can take a long time.

Solutions

To solve the problem, you can try the following solutions:

• Optimize the ASYNC Operations Code : Make sure that all the tests of the tests are properly awaited or can be handled by recall. You can use the “Waiting” keywords or.

• Reduce computing load : Limit the amount of data created, simulate scenarios, and minimize complex calculations for the test.

• Repair Network Connection : Optimize Web3 RPC calls and provide a stable network connection with a minimum delays.

4.

Example Solution

Here’s an updated example of a unit test that includes these optimizations:

`Javascript

Const {Ethers} = Need ("Hardhat");

Describe ("Lottery Contract", () => {{{

Be lottery editing;

before (Async Function () {

// load the lottery contract

Const [Account1, Account2] = Waiting for Ethers.getsigners ();

(Waiting for Ethers.getContractractory ("Lottery"). Then ((LottyContract) => {{{{

LottyContract.deploy (Account1.address);

LottyContract.deploy (Account2.address);

Return LotteryContract.Deployed ();

});

});

("To choose the winner", async function () {

// Restoring the lottery

Wait (wait for LottyContract.rees ()). Then (() => {{{{{

// Choose a winner

Const Result = Wait for LottyContract.Pickwinner ()). Then ((winner) => {{{{{{{{

Back to Ethers.utils.Formatbytes (

"0x" + result,

["Hex"]

);

});

console.log (result);

});

});

});

By following these solutions and adapting the test case, you must be able to optimize ASYNC operations to resolve the time limit and successfully run the unit tests.

More tips

• Keep in mind that timeouts can also occur due to external factors such as network congestion or unexpected problems with the blockchain provider.

• If you experience lasting problems with time limits, consider using a more robust test frame such as “jest” or “mocha”.

• Always monitor the execution time of the test set and adjust the tests accordingly to prevent timeout.