Migrate tests for example contracts

[Bargsteen]

Purpose

Migrate the tests of most of our example contracts from the old testing infrastructure to the new integration testing library. Closes https://github.com/Concordium/concordium-rust-smart-contracts/issues/337 and https://github.com/Concordium/concordium-rust-smart-contracts/issues/338.

Changes

• [x] Migrate tests and remove use of abstractions on example contracts
  • [x] account-signature-checks (none)
  • [x] auction
  • [x] cis2-multi
  • [x] cis2-multi-royalties
  • [x] cis2-nft
  • [x] cis2-wccd
  • [x] cis3-nft-sponsored-txs
  • [x] counter-notify
  • [x] credential-registry
    • [x] Migrate the tests that use entrypoints (will keep the quickcheck tests that use the state methods directly)
  • [x] eSealing
  • [x] fib
  • [x] icecream
  • [x] memo (none)
  • [x] nametoken
  • [ ] offchain-transfers (won't do, needs larger contract changes)
    • In particular, we need to add some more view entrypoints to be able to test it completely. In the interest of time, we'll skip that for now.
  • [x] piggybank
  • [x] proxy
  • [x] recorder
  • [x] signature-verifier
  • [x] smart-contract-upgrade
  • [x] transfer-policy-check
  • [ ] two-step-transfer (won't do, uses quickcheck)
  • [x] voting
• [x] Derive some PartialEq / Eq for some cis2 types
• [x] Add type aliases the Extern* types, e.g. type StateApi = ExternStateApi
• [x] Include events from interrupts in ContractInvokeSuccess::events
• [x] Update rust-sdk dependency with a fix to policy serialization (bug found when migrating transfer-policy-check
• [x] Use cargo concordium test --out./concordium-out/module.wasm.v1in the CI instead ofcargo test`
• [x] Update templates
  • [x] default
  • [x] cis2-nft
  • [x] credential-registry
• [x] Update documentation and deprecate old testing infrastructure: https://github.com/Concordium/concordium-rust-smart-contracts/pull/349

Checklist

• [x] My code follows the style of this project.
• [x] The code compiles without warnings.
• [x] I have performed a self-review of the changes.
• [x] I have documented my code, in particular the intent of the hard-to-understand areas.
• [x] (If necessary) I have updated the CHANGELOG.

[Bargsteen]

Looks good.

I'm wondering what the problem is with migrating credential-registry tests?

At least the ones in the credential_registry example are very simple. We can keep the existing tests that are for the state as they are, that was also the idea, and we migrate endpoint tests to use the testing library.

I didn't notice that. Good point. I'll migrate those tests tomorrow.