SPEC: Integration testing

[lazovicff]

Overview

We should set up a repo that will test interoperability between our ethereum and substrate Anchors.

Requirements:

• Launch a local ethereum network and deploy contracts, leave it running in the background
• Launch a local substrate network and leave it running in the background
• Run a relayer

Use https://github.com/openethereum/openethereum or equivalent to connect to the ethereum chain

Use https://github.com/scs/substrate-api-client or equivalent to connect to substrate chain

Use https://github.com/webb-tools/relayer for running a relayer

Checklist

💡 Connect chains by adding edges for all tests except where explicitly specified not to.

Positive:

• Deposit on Ethereum, withdraw on Substrate chain
• Deposit on Substrate, withdraw on Ethereum chain

Negative:

• Deposit on Ethereum, specify Substrate chain_id, withdraw on Ethereum, should fail
• Deposit on Ethereum, specify Ethereum chain_id, withdraw on Substrate, should fail
• Do not connect the Anchors, then deposit on Ethereum, withdraw on Substrate chain, should fail

This spec is WIP