Use List in place of Array

Kotlin/src/main/kotlin/com/gildedrose/GildedRose.kt

 package com.gildedrose
 
-class GildedRose(var items: Array<Item>) {
+class GildedRose(var items: List<Item>) {
 
     fun updateQuality() {
         for (i in items.indices) {

Kotlin/src/test/kotlin/com/gildedrose/GildedRoseTest.kt

@@ -7,7 +7,7 @@ internal class GildedRoseTest {
 
     @Test
     fun foo() {
-        val items = arrayOf<Item>(Item("foo", 0, 0))
+        val items = listOf(Item("foo", 0, 0))
         val app = GildedRose(items)
         app.updateQuality()
         assertEquals("fixme", app.items[0].name)

Kotlin/src/test/kotlin/com/gildedrose/TexttestFixture.kt

@@ -4,7 +4,7 @@ fun main(args: Array<String>) {
 
     println("OMGHAI!")
 
-    val items = arrayOf(Item("+5 Dexterity Vest", 10, 20), //
+    val items = listOf(Item("+5 Dexterity Vest", 10, 20), //
             Item("Aged Brie", 2, 0), //
             Item("Elixir of the Mongoose", 5, 7), //
             Item("Sulfuras, Hand of Ragnaros", 0, 80), //
@@ -31,6 +31,4 @@ fun main(args: Array<String>) {
         println()
         app.updateQuality()
     }
-
-
 }