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evmos-hardhat-rpc-issue

This repo is to test the issue with the evmos hardhat rpc provider.

Steps to reproduce

  1. Clone the repo
  2. Run npm install
  3. Run npm run build
  4. Run cp .env.example .env
  5. Fill in the private key in the .env file

Expected behavior

The test should pass, meaning the contract deployment should revert, for both networks.

Actual behavior

After running:

npx hardhat test --network fantom

and

npx hardhat test --network evmos

The test will pass for the fantom network, and fail for the evmos network. When running the test with the evmos network, the test will fail with the following error:

Error: cannot estimate gas; transaction may fail or may require manual gas limit [ See: https://links.ethers.org/v5-errors-UNPREDICTABLE_GAS_LIMIT ] (reason="rpc error: code = Unknown desc = execution reverted", method="estimateGas", transaction={"from":"0x9159C650e1D7E10a17c450eb3D50778aBA593D61","data":"0x6080604052348015600f57600080fd5b50604051631ce5e8d560e11b815260040160405180910390fdfe","accessList":null}, error={"name":"ProviderError","_stack":"ProviderError: rpc error: code = Unknown desc = execution reverted\n    at HttpProvider.request (/Users/guillem/Desktop/Peersyst/axelar-shit/evmos-hardhat-rpc-issue/node_modules/hardhat/src/internal/core/providers/http.ts:107:21)\n    at processTicksAndRejections (node:internal/process/task_queues:95:5)\n    at EthersProviderWrapper.send (/Users/guillem/Desktop/Peersyst/axelar-shit/evmos-hardhat-rpc-issue/node_modules/@nomiclabs/hardhat-ethers/src/internal/ethers-provider-wrapper.ts:13:20)","code":-32000,"_isProviderError":true}, code=UNPREDICTABLE_GAS_LIMIT, version=providers/5.7.2)

The reason why this is happening is because the evmos rpc provider does not return a data field in the error response, while the fantom one does. @nomicfoundation/hardhat-chai-matchers uses this field to try to obtain the return data from a transaction getReturnDataFromError. Fantom rpc returns the error data, but evmos doesn't, so the test fails.