Level 3 · Page Object Model & Test Architecture

A handful of working test scripts is not the same as a maintainable test suite. This level builds the real structure that makes the difference: the Page Object Model (and why it genuinely helps, demonstrated against the real pain of not having it), pytest fixtures for real setup/teardown, cross-browser testing, screenshots on failure, and a direct, hands-on diagnosis of the specific real exceptions (StaleElementReferenceException and its relatives) that make Selenium tests flaky if you don't know what causes them.

By the end of this level you'll have built a real, complete Page Object Model framework against the local test app, with real cross-browser and failure-diagnosis tooling built in.