From 6d7bec3f73023c73af48615b245acc3e1730b2d6 Mon Sep 17 00:00:00 2001
From: Janis Saldabols <janis@indexdata.com>
Date: Fri, 5 Jul 2024 09:32:32 +0300
Subject: [PATCH] Add unit test to cover existing functionality and conjured
 functionality

---
 .../java/com/gildedrose/GildedRoseTest.java   | 62 +++++++++++++++++--
 1 file changed, 57 insertions(+), 5 deletions(-)

diff --git a/Java/src/test/java/com/gildedrose/GildedRoseTest.java b/Java/src/test/java/com/gildedrose/GildedRoseTest.java
index 8ae29eec..2bc260da 100644
--- a/Java/src/test/java/com/gildedrose/GildedRoseTest.java
+++ b/Java/src/test/java/com/gildedrose/GildedRoseTest.java
@@ -1,17 +1,69 @@
 package com.gildedrose;
 
-import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 class GildedRoseTest {
 
-    @Test
-    void foo() {
-        Item[] items = new Item[] { new Item("foo", 0, 0) };
+    @ParameterizedTest
+    @CsvSource(value = {"3,2,0,1", "0,-1,3,5", "-1,-2,49,50"})
+    void testAgedBrie(int sellIn, int sellInResult, int quality, int qualityResult) {
+        Item[] items = new Item[] { new Item("Aged Brie", sellIn, quality) };
         GildedRose app = new GildedRose(items);
+
         app.updateQuality();
-        assertEquals("fixme", app.items[0].name);
+        assertEquals("Aged Brie", app.items[0].name);
+        assertEquals(sellInResult, app.items[0].sellIn);
+        assertEquals(qualityResult, app.items[0].quality);
     }
 
+    @ParameterizedTest
+    @CsvSource(value = {"11,10,25,26", "10,9,25,27", "5,4,25,28", "5,4,48,50", "0,-1,48,0"})
+    void testBackstagePasses(int sellIn, int sellInResult, int quality, int qualityResult) {
+        Item[] items = new Item[] { new Item("Backstage passes to a TAFKAL80ETC concert", sellIn, quality) };
+        GildedRose app = new GildedRose(items);
+
+        app.updateQuality();
+        assertEquals("Backstage passes to a TAFKAL80ETC concert", app.items[0].name);
+        assertEquals(sellInResult, app.items[0].sellIn);
+        assertEquals(qualityResult, app.items[0].quality);
+    }
+
+    @ParameterizedTest
+    @CsvSource(value = {"1,1,80,80", "0,0,80,80", "-1,-1,80,80"})
+    void testSulfuras(int sellIn, int sellInResult, int quality, int qualityResult) {
+        Item[] items = new Item[]{new Item("Sulfuras, Hand of Ragnaros", sellIn, quality)};
+        GildedRose app = new GildedRose(items);
+
+        app.updateQuality();
+        assertEquals("Sulfuras, Hand of Ragnaros", app.items[0].name);
+        assertEquals(sellInResult, app.items[0].sellIn);
+        assertEquals(qualityResult, app.items[0].quality);
+    }
+
+    @ParameterizedTest
+    @CsvSource(value = {"2,1,5,4", "1,0,5,4", "0,-1,5,3", "0,-1,1,0"})
+    void testRegularItem(int sellIn, int sellInResult, int quality, int qualityResult) {
+        Item[] items = new Item[]{new Item("Regular item", sellIn, quality)};
+        GildedRose app = new GildedRose(items);
+
+        app.updateQuality();
+        assertEquals("Regular item", app.items[0].name);
+        assertEquals(sellInResult, app.items[0].sellIn);
+        assertEquals(qualityResult, app.items[0].quality);
+    }
+
+    @ParameterizedTest
+    @CsvSource(value = {"2,1,5,3", "1,0,5,3", "0,-1,5,1", "0,-1,3,0"})
+    void testConjured(int sellIn, int sellInResult, int quality, int qualityResult) {
+        Item[] items = new Item[]{new Item("Conjured Mana Cake", sellIn, quality)};
+        GildedRose app = new GildedRose(items);
+
+        app.updateQuality();
+        assertEquals("Conjured Mana Cake", app.items[0].name);
+        assertEquals(sellInResult, app.items[0].sellIn);
+        assertEquals(qualityResult, app.items[0].quality);
+    }
 }