init stateful fuzz harness #1018
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bohendo
commented
Sep 26, 2024
| event Debug(string, uint256); | ||
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| // If this flag is false, assertion tests will never fail! But optimizations will work. | ||
| // Changing to false will disable optimizations but allow the assertion tests to run |
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Changing to TRUE will disable optimizations but allow the assertion tests to run
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Description
Initialize a stateful fuzz harness at pkg/vault/test/foundry/fuzz/FuzzHarness.sol plus medusa & echidna config files, gitignore updates, and package.json scripts.
To run, we'll need to install either medusa or echidna. Note that we need to use a version of medusa that includes a recent bugfix. Installing the
masterbranch from source will work, but a new release that includes this fix will be published soon. Echidna's performance may be degraded slightly due to slither failures (slither works with hardhat but echidna needs foundry).Unfortunately, this PR re-introduces a copy of the legacy
VaultMockDeployerfoundry test util. Medusa's cheatcode support is not up to parity with foundry, so replacing this with the newVaultContractsDeployerutil may require some adjustment.When you're ready, run
yarn run fuzz:medusaoryarn run fuzz:echidnafrom the vault package to kick off a fuzzing campaign.By default, this will run optimization fuzz tests. Change the
ASSERT_MODEconstant in the FuzzHarness contract to true to switch to assertion mode.Enjoy!
Type of change
Checklist:
main, or there's a description of how to merge