Interacting with an Anvil instance

[gershido]

Hey :) I'm trying to figure out how to call evm_increaseTime programmatically from a test (using Jest). So far can't find any convenient way to do so. Any help?
Thank you!

[fubhy]

Your best bet would be to create a TestClient with viem (https://viem.sh/docs/clients/test.html).

Check out the examples here for instance: https://github.com/wagmi-dev/anvil.js/blob/main/examples/example-vitest/tests/utils.ts#L15-L38

There's no increaseTime in those examples, but there's a testClient.reset() call here: https://github.com/wagmi-dev/anvil.js/blob/main/examples/example-vitest/tests/setup.ts#L8-L11

This should all work anaologues in Jest.