Testing GildedRose with Golden Master

java/pom.xml

@@ -25,6 +25,13 @@
           <artifactId>fest-assert-core</artifactId>
           <version>2.0M8</version>
         </dependency>
+        <!-- You must install approvalstest in you local or corporate repository -->
+        <!-- Cf. src/main/lib/README.txt file to install it                      -->
+        <dependency>
+            <groupId>com.approvaltests</groupId>
+            <artifactId>approval</artifactId>
+            <version>0.12</version>
+        </dependency>
 	</dependencies>
 
 	<build>

java/src/main/java/org/joyofcoding/objectcalisthenics/Item.java

@@ -30,4 +30,9 @@ public int getSellIn() {
 	public int getQuality() {
 		return quality;
 	}
+
+	@Override
+	public String toString() {
+		return "Item [name=" + name +", sellIn=" + sellIn + ", quality=" + quality + "]";
+	}
 }

java/src/main/lib/README.txt

@@ -0,0 +1,10 @@
+List of all dependencies that are not hosted in maven repository.
+You have to install it in your local repository (see below for the install command).
+
+ - ApprovalTests (http://approvaltests.sourceforge.net/)
+      Unit testing asserts can be difficult to use. Approval tests simplify this by taking 
+      a snapshot of the results, and confirming that they have not changed.
+
+   Type this command in you console (in src/main/lib directory) to install ApprovalTests in you local repository:
+
+mvn install:install-file -Dfile=ApprovalTests/ApprovalTests.jar -DgroupId=com.approvaltests -DartifactId=approval -Dversion=0.12 -Dpackaging=jar -DgeneratePom=true

java/src/test/java/org/joyofcoding/objectcalisthenics/GoldenMasterGildedRoseTest.java

@@ -0,0 +1,71 @@
+package org.joyofcoding.objectcalisthenics;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+import org.approvaltests.Approvals;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * Testing GildedRose with Golden Master.
+ * <p>
+ *  <b>Warning:</b> You must download and install approvalstest in you local or corporate repository. Cf. src/main/lib/README.txt file to install it.
+ * </p>  
+ * @see <a href="http://craftedsw.blogspot.fr/2012/11/testing-legacy-code-with-golden-master.html#comment-form">Testing legacy code with Golden Master</a> 
+ *      by Sandro Mancuso
+ * @see <a href="http://approvaltests.sourceforge.net/">Approval Tests</a>
+ * 
+ */
+public class GoldenMasterGildedRoseTest {
+	private static final int FIXED_SEED = 100;
+	private static final int NUMBER_OF_RANDOM_ITEMS = 2000;
+	private static final int MINIMUM = -50;
+	private static final int MAXIMUN = 101;
+
+	private String[] itemNames = { "+5 Dexterity Vest", "Aged Brie",
+			"Elixir of the Mongoose", "Sulfuras, Hand of Ragnaros",
+			"Backstage passes to a TAFKAL80ETC concert", "Conjured Mana Cake" };
+	private Random random = new Random(FIXED_SEED);
+	private GildedRose gildedRose;
+
+	@Before
+	public void initialise() {
+		gildedRose = new GildedRose();
+	}
+
+	@Test
+	// @UseReporter(JunitReporter.class)
+	public void should_generate_update_quality_output() throws Exception {
+		List<Item> items = generateRandomItems(NUMBER_OF_RANDOM_ITEMS);
+
+		gildedRose.updateQuality(items);
+		Approvals.verifyAll("Item", items);
+	}
+
+	private List<Item> generateRandomItems(int totalNumberOfRandomItems) {
+		List<Item> items = new ArrayList<Item>();
+		for (int cnt = 0; cnt < totalNumberOfRandomItems; cnt++) {
+			items.add(new Item(itemName(), sellIn(), quality()));
+		}
+		return items;
+	}
+
+	private String itemName() {
+		return itemNames[0 + random.nextInt(itemNames.length)];
+	}
+
+	private int sellIn() {
+		return randomNumberBetween(MINIMUM, MAXIMUN);
+	}
+
+	private int quality() {
+		return randomNumberBetween(MINIMUM, MAXIMUN);
+	}
+
+	private int randomNumberBetween(int minimum, int maximum) {
+		return minimum + random.nextInt(maximum);
+	}
+
+}