From 68eeb1fc0f1b3a9b99070bbb76c29b254ba480bf Mon Sep 17 00:00:00 2001
From: Eric Jan Malotaux <emalotau@gmail.com>
Date: Tue, 26 Apr 2022 23:40:56 +0200
Subject: [PATCH] Ordinary items decrease in sellIn and decrease in quality
 until zero,

---
 .../kotlin/com/gildedrose/GildedRoseTest.kt   | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/Kotlin/src/test/kotlin/com/gildedrose/GildedRoseTest.kt b/Kotlin/src/test/kotlin/com/gildedrose/GildedRoseTest.kt
index a242ef7f..fcd69e80 100644
--- a/Kotlin/src/test/kotlin/com/gildedrose/GildedRoseTest.kt
+++ b/Kotlin/src/test/kotlin/com/gildedrose/GildedRoseTest.kt
@@ -47,6 +47,28 @@ internal class GildedRoseTest {
         }
     }
 
+    @Test
+    fun ordinaryItemsDecreaseInSellIn() {
+        val elixir = gildedRose.items.first { it.name.startsWith("Elixir") }
+        while (elixir.sellIn >= 0) {
+            val sellIn = elixir.sellIn
+            gildedRose.updateQuality()
+            assertEquals(sellIn - 1, elixir.sellIn)
+        }
+    }
+
+    @Test
+    fun ordinaryItemsDecreaseInQualityUntilZero() {
+        val elixir = gildedRose.items.first { it.name.startsWith("Elixir") }
+        while (elixir.quality != 0) {
+            val quality = elixir.quality
+            gildedRose.updateQuality()
+            assertTrue(elixir.quality < quality)
+        }
+        gildedRose.updateQuality()
+        assertEquals(0, elixir.quality)
+    }
+
     @Test
     fun agedBrieIncreasesInQuality() {
         items.first { it.name == "Aged Brie" }.also { agedBrie ->