 
 <prompt> Wetin be the plural form of the Latin word datum? Given the previous question, write a context wey contain the answer. E fit be 1 - 20 sentences. Context: <response>: ```Di practice of component interface testing fit dey use to check how data dey waka between different units or subsystem components, pass di full integration testing wey dey happen between those units. Di data wey dey pass fit be like "message packets" and e fit check di range and data types, for data wey dey come out from one unit, and test am to see if e dey valid before e go enter another unit. One option for interface testing na to dey keep separate log file of data items wey dey pass, often with timestamp wey dey logged to allow analysis of thousands of cases of data wey dey pass between units for days or weeks. Tests fit include checking how some extreme data values dey behave while other interface variables dey pass as normal values. Unusual data values for interface fit help explain why performance dey behave unexpectedly for di next unit. Component interface testing na one kind black-box testing, with focus on di data values pass di related actions of a subsystem component.``` 