052-instagram-followers/docs/wiki/Step-2-Class.md

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Step 2 - Class

Because the bot has several steps, the code is organised in a class, InstaFollower. __init__ creates the Selenium driver. The three methods login(), find_followers() and follow() are called in that order.

The class is the Selenium adapter in the infrastructure layer. A small use case, run_bot, calls the three methods through a Follower protocol, so the order is tested without a browser.

What we gained

• Grouping steps that share state (the driver) in a class.
• Injecting the driver and the sleep function, so tests use a fake driver and never wait.
• Closing the browser with a context manager (with InstaFollower() as follower:).