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docs: add Foundry troubleshooting for invariant tests with --fork-url #96

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11 changes: 11 additions & 0 deletions src/pages/sdk/foundry/index.mdx
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Expand Up @@ -301,4 +301,15 @@ The following flags are available for `cast` and `forge script` for Tempo-specif

Ledger and Trezor wallets are not yet compatible with any `--tempo.*` option.

## Troubleshooting

### Invariant tests with `--fork-url`
In some Foundry versions, invariant runs may stall when used with `--fork-url` / `--fork-block-number`.

Workarounds:
- Run invariants without forking, and use `--fork-url` only for non-invariant tests.
- If you only need a quick sanity check, temporarily focus on non-invariant tests while forking.

Upstream tracking: https://github.com/foundry-rs/foundry/issues/4656