What Are the Best Resources for Learning Smart Contract Testing in 2025?

I am seeking resources to learn about smart contract testing.

I have learned the basics of writing Solidity. Now, I need to truly master testing. This skill seems essential for landing a blockchain developer role. Employers want to hire developers who write secure code. I want my portfolio to reflect these best practices.

I am searching for more than just simple tutorials. I want to learn what the professionals actually use. Could you suggest any great articles or courses?

I want to see how experts set up a full testing environment. I also need to understand common security vulnerabilities. My main goal is to build a real security-first mindset.

Please share any guides or links you trust. Recommending security experts to follow would also be great. Thanks for helping me find the right path.