kotlin-fork/idea/testData/refactoring/extractFunction/controlFlow/evaluateExpression/evalExprInWhenSubject.kt

// PARAM_TYPES: kotlin.Int
// PARAM_TYPES: kotlin.Int
// PARAM_DESCRIPTOR: value-parameter val a: kotlin.Int defined in foo
// PARAM_DESCRIPTOR: val b: kotlin.Int defined in foo
// SIBLING:
fun foo(a: Int): Int {
    val b: Int = 1
    return when (<selection>a + b</selection>) {
        0 -> b
        1 -> -b
        else -> a - b
    }
}