Fix/eip7702 anvil mnemonic #229
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
EIP-7702 prevents use of default Anvil accounts for signing-related tests. Replaced default '.fork().try_spawn()' with custom mnemonic-based fork to ensure compatibility with signature workflows.
mattsse
approved these changes
Jul 9, 2025
|
Rather than hardcode a mnemonic we should ideally just rely on a random one when running the example considering we always access it using the If we publish a mnemonic Github bots will pick this up and will likely deploy forwarding contracts on these too |
Fixed in this PR: #230 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Motivation
When running the original example, it failed.
Then found this info from Telegram chat.
Due to recent changes introduced in EIP-7702, the default Anvil mnemonic is no longer suitable for signature-based testing. This causes issues when using Anvil accounts for EIP-712 or other signing workflows, as the ephemeral keys do not behave consistently.
Solution
Replaced the previous usage of
Anvil::new().fork().try_spawn()?with a custom mnemonic-based Anvil instance. This ensures deterministic and reusable private keys for consistent behavior in signing and transaction testing.Added inline documentation explaining the rationale, along with the command to generate such mnemonic-based forks via CLI.
PR Checklist