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Ethereum: VRF local testing issues,Error: VM Exception while processing transaction: reverted with custom error ‘InsufficientBalance()’

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Ethereum: VRF Local Test Problems and Returned Transactions

As part of our current training in Patrick Colin’s course, we recently upgraded to use VRF (virtual accidental function) V2.5 in our local Ethereum test environment using Hardhat.

In this article, I will describe certain key observations of our experience with local VRF tests and emphasize a critical problem that has arisen.

Upgrade to VRF V2.5

We were able to go to the VRF V2.5 after making the necessary changes to our contract code and configuring our test environment using Hardhat. Our initial tests showed promising results, but with the progress of an unexpected mistake, we encountered an unexpected mistake.

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After performing a series of tests, including certain simulations and tests based on a scenario, we encountered the following error:

“Error: Exception VM during transaction processing: Returned with a personalized error” Insufficient defect “”

This error occurred when we tried to treat the transactions that exceeded our payment.

Problem: Transactions Recovered and insufficient means

Ethereum: VRF local testing issues,Error: VM Exception while processing transaction: reverted with custom error 'InsufficientBalance()'

After analyzing the error message and looked at our test newspapers, we found that the problem was related to insufficient fund error. The error is caused by the attempt to spend funds from an account that does not have enough sales.

Current status of local VRF tests

To summarize, we have upgraded to VRF V2.5 and is currently conducting Hardhat tests. Despite the success of 13 of the 14 tests, our last test failed due to insufficient errors in the Fund in the local VRF test environment.

This problem emphasizes some critical considerations of using VRF locally:

* Stock Management : When working with VRF V2.5, it is essential to carefully manage your funds to avoid unexpected mistakes like this.

* VRF Configuration : Make sure you configure your VRF copy properly and that the contracts and variables used in your tests are properly configured.

* Test scenarios

: Developing full test strategies that cover various scenarios, including transactions that exceed available sales.

Next steps

In order to solve this problem, we plan to study more and explore the possible solutions. We will work on:

  • Consideration of our contractual code for potential vulnerabilities or configuration errors.

  • Testing different scenarios and cases of board to ensure that our local VRF test environment is stable.

  • Improve our fund management strategies to prevent such problems in the future.

You stay listening to other updates to this project while we continue to navigate the complexity of using VRF V2.5 locally with Hardhat.

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