From 45ef8fc2adcb5b967832c7781c28363d35d5de5c Mon Sep 17 00:00:00 2001
From: Bjorn Misseghers <bjorn.misseghers@unifiedpost.com>
Date: Tue, 13 Apr 2021 08:55:09 +0200
Subject: [PATCH] Add test for DefaultQualityBehavior

---
 .../quality/DefaultQualityBehaviorTest.java   | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Java/src/test/java/com/gildedrose/behavior/quality/DefaultQualityBehaviorTest.java

diff --git a/Java/src/test/java/com/gildedrose/behavior/quality/DefaultQualityBehaviorTest.java b/Java/src/test/java/com/gildedrose/behavior/quality/DefaultQualityBehaviorTest.java
new file mode 100644
index 00000000..7708c8c5
--- /dev/null
+++ b/Java/src/test/java/com/gildedrose/behavior/quality/DefaultQualityBehaviorTest.java
@@ -0,0 +1,45 @@
+package com.gildedrose.behavior.quality;
+
+import com.gildedrose.Item;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class DefaultQualityBehaviorTest {
+
+    private QualityBehavior qualityBehavior;
+
+    @BeforeEach
+    public void setUp() throws Exception {
+        qualityBehavior = new DefaultQualityBehavior();
+    }
+
+    @Test
+    void decreaseQuality() {
+        Item item = getItem(10);
+        qualityBehavior.processQualityUpdate(item);
+
+        assertEquals(9, item.quality);
+    }
+
+    @Test
+    void decreaseNegativeQuality() {
+        Item item = getItem(-10);
+        qualityBehavior.processQualityUpdate(item);
+
+        assertEquals(0, item.quality);
+    }
+
+    @Test
+    void decreaseQualityZero() {
+        Item item = getItem(0);
+        qualityBehavior.processQualityUpdate(item);
+
+        assertEquals(0, item.quality);
+    }
+
+    private Item getItem(int quality) {
+        return new Item("SomeItem", 0, quality);
+    }
+}