//KT-234 Force when() expressions to have an 'else' branch
//KT-973 Unreachable code

package kt234_kt973

class Pair<A, B>(<!UNUSED_PARAMETER!>a<!>: A, <!UNUSED_PARAMETER!>b<!>: B)

fun test(t : Pair<Int, Int>) : Int {
    when (t) {
        Pair(10, 10) -> return 1
    }
    return 0 // unreachable code
}

fun test1(t : Pair<Int, Int>) : Int {
    when (t) {
        Pair(10, 10) -> return 1
        else -> return 2
    }
    <!UNREACHABLE_CODE!>return 0<!> // unreachable code
}

//more tests
fun t1(x: Int) = when(<!UNUSED_EXPRESSION!>x<!>) {
    else -> 1
}

fun t5(x: Int) = <!NO_ELSE_IN_WHEN!>when<!> (x) {
    <!USELESS_IS_CHECK!>is Int<!> -> 1
    2 -> 2
}

fun foo3(x: Int) = when(x) {
    <!ELSE_MISPLACED_IN_WHEN!>else<!> -> 1
    <!UNREACHABLE_CODE!>2 -> 2<!>
}

fun foo4(x: Int) = when(x) {
    2 -> x
    else -> 3
}