Foundry Fundamentals : Section 2 : Lesson 22 : Integration Testing

[SiegfriedBz]

Just to clarify my thoughts, is it correct that

• unit tests focus on individual contract functionality, when a user directly interact with our FundMe contract
• integration tests focus on interactions between contracts, eg when a "foreign" contract interacts with our FundMe contract's functions
  ?
  Thanks !

[Ifra001]

I feel like that basically sums up what unit and integration tests fundamentally do! (This made me understand the differences between the two tests better!)

[EngrPips]

Hello @SiegfriedBz, I think a more appropriate perspective is

**Unit testing: ** Testing individual functions that make up a single contract to ensure that each function behaves appropriately and correctly does what it is meant to do when called.

Integration testing: This involves testing the whole system to ensure our protocol behaves appropriately when there is interaction between different parts of our whole system.

Please ask questions if anything is confusing.