Testing for devs

What is the general principle of the testing pyramid regarding the quantity and complexity of tests?

• More complex tests should be at the bottom, and simpler tests at the top.

• The majority of tests should be simple and fast, located at the bottom.

• All tests should have equal complexity and run time.

• The pyramid structure dictates that manual tests are the most numerous.

What is the primary focus of unit tests in software development?

• Testing the interactions between different components of an application.

• Ensuring the application meets business requirements through user interface interactions.

• Verifying that individual methods and functions in the code work correctly at the lowest level.

• Evaluating the application's performance under heavy load.

When performing component tests for an API, what is the typical approach regarding other components like the database or frontend?

• All components, including the database and frontend, are fully integrated and tested together.

• The API is tested in isolation, with other components like the database being mocked out.

• Only the frontend is tested, as it's the user-facing part of the application.

• Component tests are skipped entirely, and focus is placed on end-to-end tests.

What is a common characteristic and challenge associated with end-to-end tests?

• They are typically fast to run and are executed before every code commit.

• They focus on individual functions and methods, providing precise error locations.

• They require all components to be working together and can be time-consuming, often run overnight.

• They are primarily used for testing database interactions in isolation.