Proposal to add Hardhat tests for smart contracts

[SIDDHANTCOOKIE]

Hi @pradeeban @karthiksathishjeemain,
Hope you’re doing well.

For a few recent contract related PRs, I validated the changes locally using Hardhat tests covering document creation, updates, deletion, purchases, and access control. I noticed that the repository currently does not include any test files.

I wanted to check if you would be open to adding Hardhat tests to the repo going forward. I believe having basic contract tests could be useful for future contributors to validate changes locally and reduce regressions, especially since deploying on a testnet takes more time just to catch compilation or basic logic issues.

If this sounds good, I can add the existing tests in a separate PR and follow any structure or conventions you’d prefer.

Thanks for your time.

[karthiksathishjeemain]

Sure @SIDDHANTCOOKIE!! Please push the PR.