Testing

6 documents

Comprehensive unit testing

Prioritize unit tests over integration tests. Test state transitions, edge cases, serialization round-trips. Every im...

csharppythontypescript

Property-Based Testing

When to use: parsers, serializers, data transformers, encoders/decoders, validators — anything

csharpkotlinpythonswifttypescript

Swift Testing

Use Swift Testing (@Test, #expect/#require, parameterized arguments, suites, traits) for new Swift unit tests.

swift

Test Data

**Construct what you need, per test.** Large shared fixture files SHOULD be avoided.

Test Doubles

Use [Martin Fowler's taxonomy](https://martinfowler.com/bliki/TestDouble.html):

csharpkotlinpythonswifttypescriptweb

Unit Test Patterns

**Structure — Arrange, Act, Assert (AAA):**