Full-Stack Software EngineerIntermediate8 modules~4.0 hours hands-on3 learning modes
Testing, Automation & Continuous Integration
Master the testing pyramid, unit, integration, and E2E tests, and automate quality enforcement through GitHub Actions CI pipelines.
// What you'll be able to do- Unit, Integration, and E2E in balance
- AAA pattern, matchers, and pure function testing
- Isolating dependencies without faking everything
- React Testing Library and accessibility-first queries
8 modules, built to run
Every module ships runnable code. Expand any one to see what's inside.
00IntroductionWhy testing is a professional discipline30 min
Questions this module answers
- What should you know about why automated testing prevents regressions and enables safe refactoring?
- How do you choose the learning path that fits your goals?
Start moduleFree preview
01The Testing PyramidUnit, Integration, and E2E in balance30 min
Questions this module answers
- What should you know about the three layers of the testing pyramid and their tradeoffs?
- How can you recognize which test type belongs at each layer and why?
02Unit Testing with Jest and VitestAAA pattern, matchers, and pure function testing30 min
Questions this module answers
- How do you write unit tests using the Arrange-Act-Assert pattern?
- How do you identify edge cases every function should have tested?
03Mocking and Test DoublesIsolating dependencies without faking everything30 min
Questions this module answers
- How do you replace external dependencies with controlled fakes using jest.fn() and jest.mock()?
- How do you test async code with mocked network calls?
04Integration and Component TestingReact Testing Library and accessibility-first queries30 min
Questions this module answers
- What should you know about what integration testing covers that unit testing misses?
- What should you know about when to use getByRole vs getByTestId and why it matters?
05E2E Testing and TDDPlaywright critical journeys and red-green-refactor30 min
Questions this module answers
- How do you write E2E tests with Playwright that test real user journeys?
- What should you know about the TDD red-green-refactor cycle and when to apply it?
06Continuous Integration with GitHub ActionsAutomate every push, protect every branch30 min
Questions this module answers
- How do you write a GitHub Actions workflow that runs lint, type-check, tests, and build?
- What should you know about triggers, jobs, and steps in the YAML syntax?
07Pattern SynthesisChoosing the right testing strategy for any situation30 min
Questions this module answers
- How do you apply a decision framework to choose the correct test type for any scenario?
- How can you recognize the signals in a problem that indicate which test layer to use?
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