xUnit

Add a regression test after a role-specific incident

Turns a production-only role and payload failure into the smallest durable API regression test.

Build a non-destructive post-deploy API smoke check

Checks health, authentication, and one critical read flow after deployment without creating persistent business data.

Choose between mocks, stubs, fakes, and real dependencies

Compares test doubles by purpose and explains when a real dependency provides a more trustworthy test.

Choose Testcontainers, SQLite, or EF Core InMemory

Chooses database test infrastructure by the provider behavior a test must prove.

Choose test coverage from change risk

Builds a proportionate test plan from blast radius, failure probability, detectability, and reversibility.

Choose the right test level for a change

Explains how unit, integration, contract, component, and end-to-end tests cover different failure boundaries.

.NET Full Stack

Full-cycle .NET full-stack interview preparation.

A role-based preparation path covering C#, ASP.NET Core APIs, data access, frontend integration, testing, deployment, system design, real-life scenarios, and behavioral interview topics.

.NET Backend