Je zit nu bij deze sessie! 

• Intro snapshot testing • Demo (show me the code!) • Summary • And then time for questions About this session (Snapshot Testing with Verify) 

1966 Michel Schep 

1974 

1978 - 1992 

1993-2023 

No content

Snapshot testing 

Snapshot testing mechanism 

Demo • Verify (Snapshooter, Snapper, Polaroider, etc) • xUnit (maar ook voor MSTest, Nunit) • Rider (VS 2022) • WinMerge • Basic example • Scrubbers • EF Core • Logging • Web API (integration test) 

Demo • Martin Fowler • Complex object • Scrubbers • EF Core • Loggers • Integration Test • Tools • [UsesVerify] • return Verify(actual) • verified vs received files • .gitignore • Scrub datetime and Guids • Ignore Field • Record EF Core stream • Record Logging stream • HTTP extention 

Many extensions 

• Snapshot testing is a different way of asserting the test results • Very easy to be up and running • Keep the snapshots simple • Verify is a library that implements the snapshot ideas • Verify is extensible (HTTP, Logging, SQL Server, EF Core, Scrubbers) • If a simple assert is possible then use a simple assert (with for example Fluent Assertions) • When possible, replace it by dedicated unit tests • Especially handy when the software works (customers are happy) but no tests and some refactoring is needed Summary 

Questions?