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Levels of Testing

Unit, Integration, and E2E. Learn the different levels of testing and how to balance them for a perfect test suite.

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Strategy

Building a balanced testing safety net.

A balanced test suite is the difference between a stable app and a maintenance nightmare.

1The Base: Unit Testing

Unit tests provide immediate feedback. If you change a line of code and a unit test fails, you know exactly where the problem is. Isolation is their superpower.

2The Middle: Integration

Even if every unit works perfectly, they might fail when put together. Integration tests catch bugs in the 'glue' code—like database queries or API contracts.

3The Peak: E2E

E2E tests give you the ultimate peace of mind. They prove that a user can actually sign up, log in, and buy a product. Use them sparingly for critical flows.