algo test for arc() dev

Test3.kt

package fr.francetv.francetvsport.arch.infrastructure.data.source.remote.pic

//You are going to be given a word. Your job is to return the middle character of the word. If the word's length is odd, return the middle character. If the word's length is even, return the middle 2 characters.
fun getMiddle(word: String): String {
    val middleIndex = word.length / 2
    return if (word.length.isEven()) {
        word.substring((middleIndex - 1)..middleIndex)
    } else {
        word[middleIndex].toString()
    }
}

private fun Int.isEven() = rem(2) == 0

fun main() {
    assertEquals(getMiddle("test"), "es")
    assertEquals(getMiddle("testing"), "t")
    assertEquals(getMiddle("middle"), "dd")
}

fun assertEquals(i: String, find: String): Boolean {
    if (i != find) throw Exception("$i not equal $find")
    return true
}