Recently I saw a <post> for Kotlin 1.5.0 and I dec...

# stdlib

[Mustafa Ozhan]

Recently I saw a post for Kotlin 1.5.0 and I decided to use assertIs method in whole instance checks in my tests, and I replaced many of
assertTrue { it is SomeClass } with assertIs<SomeClass>(it)

Now, I am checking my coverage and it decreased, all the assertIs methods seems partially covered

Is it expected? are they really partially covered ?

[Klitos Kyriacou]

Depending on your code coverage checker, it may be treated like a branch, where you have 2 things to cover: the case where the parameter is the asserted type, and the case where it isn't.

[Mustafa Ozhan]

Yes and isn’t it something to be covered where the implementation of assertIs is ? This is a method from kotlin standard library

[Fleshgrinder]

This is a result of inlining, JaCoCo doesn't know that this code wasn't written by you.