UnitTestingAndBenchmarkingExample

A practice repo pairing xUnit tests with BenchmarkDotNet benchmarks — because "it works" and "it works fast enough" are answered with different tools.

What it demonstrates

A small InventoryService has two versions of the same method: AddStock_Old, which just appends a stock entry, and AddStock, which adds a duplicate-product check first. Unit tests cover both for correctness, and a BenchmarkDotNet benchmark (with [MemoryDiagnoser]) measures what that extra check actually costs in time and allocations — turning "this is probably fine" into a number.

Why it exists

Built as a learning/practice project, not for a specific work problem — a place to get comfortable pairing tests and benchmarks on the same piece of code, rather than treating them as separate concerns.

Technology

.NET, C#, xUnit, BenchmarkDotNet