c# - How to convert integration tests to unit tests -


this question has answer here:

i've been tasked changing else's integration tests unit tests. have business objects talk database. , our tests reflect that. problem have code calls db directly within method - , want hit mock data instead of db. how do that? 

list<listofstuff> listing = getdatafromdb(dbstuff); //this want      //not happen in test.

i can't change method, , read wrapping method in interface, i'm unsure of how that...

you can use ms fakes

fakes let change 

getdatafromdb(dbstuff);

does, better write code uses dependency injection , getdatafromdb accessed via interface.

this simple fake example. 

  shimdatetime.nowget = () => new datetime(2012, 12, 21);

we making datetime.now return 21/12/2012 :) can same getdatafromdb call.

steve


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