test: ensure can use impersonated account [APE-845]

[antazoey]

What I did

I am debugging something in ape-foundry but needed to compare with ape-hardhat but struggling to find a good test. This PR makes a good test template that I can use both.

How I did it

• move contract_a to conftest
• use impersonated account in test to ensure can call method from that contract

How to verify it

tests all pass will suffice. no need prod code changes.

Checklist

• [ ] Passes all linting checks (pre-commit and CI jobs)
• [ ] New test cases have been added and are passing
• [ ] Documentation has been updated
• [ ] PR title follows Conventional Commit standard (will be automatically included in the changelog)

[linear[bot]]

APE-845 "test: ensure can use impersonated account" (ApeWorX/ape-hardhat #139)

### What I did I am debugging something in `ape-foundry` but needed to compare with `ape-hardhat` but struggling to find a good test. This PR makes a good test template that I can use both. ### How I did it * move contract_a to conftest * use impersonated account in test to ensure can call method from that contract ### How to verify it tests all pass will suffice. no need prod code changes. ### Checklist * [ ] Passes all linting checks (pre-commit and CI jobs) * [ ] New test cases have been added and are passing * [ ] Documentation has been updated * [ ] PR title follows [Conventional Commit](https://www.conventionalcommits.org/en/v1.0.0/) standard (will be automatically included in the changelog) --- [ApeWorX/ape-hardhat #139](https://github.com/ApeWorX/ape-hardhat/pull/139) by [antazoey](https://github.com/antazoey) on GitHub *via LinearSync*