cover code for kIsWeb condition true and false both cases

[Kaushik Harsora]

In my case, I have developed apps for mobile and web both cases in one project,
Now I write unit cases and set for code coverage, but in my case kIsWeb condition does not check both cases,
e.g.
if(kIsWeb){
// for web app
}else{
// for non-web app
}

so in this type of case not cover for web part, only covers for non-web app part
My question is how can I cover both cases for unit testing?