init

.gitignore

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+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff:
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/dictionaries
+
+# Sensitive or high-churn files:
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.xml
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+
+# Gradle:
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# CMake
+cmake-build-debug/
+
+# Mongo Explorer plugin:
+.idea/**/mongoSettings.xml
+
+## File-based project format:
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff:
+*.iml
+.idea/**
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/dictionaries
+
+# Sensitive or high-churn files:
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.xml
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+
+# Gradle:
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# CMake
+cmake-build-debug/
+
+# Mongo Explorer plugin:
+.idea/**/mongoSettings.xml
+
+## File-based project format:
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+                 # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+                 # User-specific stuff:
+                 .idea/**/workspace.xml
+                 .idea/**/tasks.xml
+                 .idea/dictionaries
+
+                 # Sensitive or high-churn files:
+                 .idea/**/dataSources/
+                 .idea/**/dataSources.ids
+                 .idea/**/dataSources.xml
+                 .idea/**/dataSources.local.xml
+                 .idea/**/sqlDataSources.xml
+                 .idea/**/dynamic.xml
+                 .idea/**/uiDesigner.xml
+
+                 # Gradle:
+                 .idea/**/gradle.xml
+                 .idea/**/libraries
+
+                 # CMake
+                 cmake-build-debug/
+
+                 # Mongo Explorer plugin:
+                 .idea/**/mongoSettings.xml
+
+                 ## File-based project format:
+                 *.iws
+
+                 ## Plugin-specific files:
+
+                 # IntelliJ
+                 /out/
+
+                 # mpeltonen/sbt-idea plugin
+                 .idea_modules/
+
+                 # JIRA plugin
+                 atlassian-ide-plugin.xml
+
+                 # Cursive Clojure plugin
+                 .idea/replstate.xml
+
+                 # Crashlytics plugin (for Android Studio and IntelliJ)
+                 com_crashlytics_export_strings.xml
+                 crashlytics.properties
+                 crashlytics-build.properties
+                 fabric.properties
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+.project
+.classpath
+.settings
+
+
+#maven build target
+target/
+
+# ---> Java
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*

Inventory.java

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+
+public class Inventory {
+    private Item[] items;
+
+    public Inventory(Item[] items) {
+        super();
+        this.items = items;
+    }
+
+    public Inventory() {
+        super();
+        items = new Item[] {
+                    new Item("+5 Dexterity Vest", 10, 20), 
+                    new Item("Aged Brie", 2, 0),
+                    new Item("Elixir of the Mongoose", 5, 7),
+                    new Item("Sulfuras, Hand of Ragnaros", 0, 80),
+                    new Item("Backstage passes to a TAFKAL80ETC concert", 15, 20),
+                    new Item("Conjured Mana Cake", 3, 6) 
+                };
+
+    }
+
+    public void updateQuality() {
+        for (int i = 0; i < items.length; i++) {
+            if (items[i].getName() != "Aged Brie"
+                    && items[i].getName() != "Backstage passes to a TAFKAL80ETC concert") {
+                if (items[i].getQuality() > 0) {
+                    if (items[i].getName() != "Sulfuras, Hand of Ragnaros") {
+                        items[i].setQuality(items[i].getQuality() - 1);
+                    }
+                }
+            } else {
+                if (items[i].getQuality() < 50) {
+                    items[i].setQuality(items[i].getQuality() + 1);
+
+                    if (items[i].getName() == "Backstage passes to a TAFKAL80ETC concert") {
+                        if (items[i].getSellIn() < 11) {
+                            if (items[i].getQuality() < 50) {
+                                items[i].setQuality(items[i].getQuality() + 1);
+                            }
+                        }
+
+                        if (items[i].getSellIn() < 6) {
+                            if (items[i].getQuality() < 50) {
+                                items[i].setQuality(items[i].getQuality() + 1);
+                            }
+                        }
+                    }
+                }
+            }
+
+            if (items[i].getName() != "Sulfuras, Hand of Ragnaros") {
+                items[i].setSellIn(items[i].getSellIn() - 1);
+            }
+
+            if (items[i].getSellIn() < 0) {
+                if (items[i].getName() != "Aged Brie") {
+                    if (items[i].getName() != "Backstage passes to a TAFKAL80ETC concert") {
+                        if (items[i].getQuality() > 0) {
+                            if (items[i].getName() != "Sulfuras, Hand of Ragnaros") {
+                                items[i].setQuality(items[i].getQuality() - 1);
+                            }
+                        }
+                    } else {
+                        items[i].setQuality(items[i].getQuality()
+                                - items[i].getQuality());
+                    }
+                } else {
+                    if (items[i].getQuality() < 50) {
+                        items[i].setQuality(items[i].getQuality() + 1);
+                    }
+                }
+            }
+        }
+}
+}

InventoryTest.java

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+import static org.junit.Assert.*;
+import java.util.Arrays;
+import org.junit.Test;
+
+public class InventoryTest {
+	
+	@Test
+	public void should_never_changes_quailty_of_Sulfuras() throws Exception {
+		Item sulfuras = new Item("Sulfuras, Hand of Ragnaros", 0, 80);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(new Item("Sulfuras, Hand of Ragnaros", 0, 80)).toArray());
+		
+		sut.updateQuality();
+		
+		assertEquals(80, sulfuras.getQuality());
+		
+		
+	}
+	@Test
+	public void should_never_changes_sellIn_of_Sulfuras() throws Exception {
+		Item sulfuras = new Item("Sulfuras, Hand of Ragnaros", 0, 80);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(sulfuras).toArray());
+		
+		sut.updateQuality();
+		
+		assertEquals(0, sulfuras.getSellIn());
+		
+		
+	}
+	
+	
+	
+	@Test
+	public void should_lower_the_sellIn_by_one_for_normal_items() throws Exception {
+		Item normalItem = new Item("+5 Dexterity Vest", 10, 20);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(normalItem).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(9, normalItem.getSellIn());
+	}
+	
+	@Test
+	public void should_lower_the_quality_by_one_for_normal_items() throws Exception {
+		Item normalItem = new Item("+5 Dexterity Vest", 10, 20);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(normalItem).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(19, normalItem.getQuality());
+	}
+	
+	@Test
+	public void should_not_lower_the_quality_below_zero() throws Exception {
+		Item normalItem = new Item("+5 Dexterity Vest", 10, 0);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(normalItem).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(0, normalItem.getQuality());
+	}
+	
+	@Test
+	public void should_lower_the_quality_twice_as_fast_once_the_sell_in_date_has_passed() throws Exception {
+		Item normalItem = new Item("+5 Dexterity Vest", -1, 25);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(normalItem).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(23, normalItem.getQuality());
+	}
+	
+	
+	@Test
+	public void should_increase_the_quality_of_aged_brie_as_it_gets_older() throws Exception {
+		Item agedBrie = new Item("Aged Brie", 10, 25);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(agedBrie).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(26, agedBrie.getQuality());
+	}
+	
+	
+	@Test
+	public void should_not_increase_the_quality_of_aged_brie_over_50() throws Exception {
+		Item agedBrie = new Item("Aged Brie", 10, 50);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(agedBrie).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(50, agedBrie.getQuality());
+	}
+	
+	@Test
+	public void should_lower_backstage_passes_to_zero_quality_once_concert_has_happened() throws Exception {
+		Item backStagePass = new Item("Backstage passes to a TAFKAL80ETC concert", -1, 20);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(backStagePass).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(0, backStagePass.getQuality());
+	}
+	
+	@Test
+	public void should_increase_backstage_passes_quality_by_1_when_the_concert_is_more_than_10_days_away() throws Exception {
+		Item backStagePass = new Item("Backstage passes to a TAFKAL80ETC concert", 11, 20);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(backStagePass).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(21, backStagePass.getQuality());
+	}
+	
+	@Test
+	public void should_increase_backstage_passes_quality_by_2_when_the_concert_is_10_days_or_less_away() throws Exception {
+		Item backStagePass = new Item("Backstage passes to a TAFKAL80ETC concert", 10, 27);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(backStagePass).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(29, backStagePass.getQuality());
+	}
+	
+	@Test
+	public void should_increase_backstage_passes_quality_by_3_when_the_concert_is_5_days_or_less_away() throws Exception {
+		Item backStagePass = new Item("Backstage passes to a TAFKAL80ETC concert", 5, 44);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(backStagePass).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(47, backStagePass.getQuality());
+	}
+	
+	@Test
+	public void should_not_increase_backstage_passes_above_a_quality_of_50() throws Exception {
+		Item backStagePassMoreThan10DaysAway = new Item("Backstage passes to a TAFKAL80ETC concert", 15, 50);
+		
+		Item backStagePass10DaysAway = new Item("Backstage passes to a TAFKAL80ETC concert", 5, 49);
+		Item backStagePass5DaysAway = new Item("Backstage passes to a TAFKAL80ETC concert", 5, 48);
+		
+		Inventory sut = new Inventory((Item[]) Arrays.asList(backStagePassMoreThan10DaysAway, backStagePass10DaysAway, backStagePass5DaysAway).toArray());
+		
+		sut.updateQuality();
+		
+		
+		assertEquals(50, backStagePassMoreThan10DaysAway.getQuality());
+		assertEquals(50, backStagePass10DaysAway.getQuality());
+		assertEquals(50, backStagePass5DaysAway.getQuality());
+	}
+	
+	
+	
+	
+	
+	
+	
+}

Item.java

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+public class Item {
+    private String name;
+    private int sellIn;
+    private int quality;
+
+    public Item(String name, int sellIn, int quality) {
+        super();
+        this.name = name;
+        this.sellIn = sellIn;
+        this.quality = quality;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getSellIn() {
+        return sellIn;
+    }
+
+    public void setSellIn(int sellIn) {
+        this.sellIn = sellIn;
+    }
+
+    public int getQuality() {
+        return quality;
+    }
+
+    public void setQuality(int quality) {
+        this.quality = quality;
+    }
+}

README.MD

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+------------------------------------------------------------------------
+This is the project README file. Here, you should describe your project.
+Tell the reader (someone who does not know anything about this project)
+all he/she needs to know. The comments should usually include at least:
+------------------------------------------------------------------------
+
+PROJECT TITLE:
+PURPOSE OF PROJECT:
+VERSION or DATE:
+HOW TO START THIS PROJECT:
+AUTHORS:
+USER INSTRUCTIONS:

package.bluej

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+#BlueJ package file
+dependency1.from=InventoryTest
+dependency1.to=Item
+dependency1.type=UsesDependency
+dependency2.from=InventoryTest
+dependency2.to=Inventory
+dependency2.type=UsesDependency
+editor.fx.0.height=722
+editor.fx.0.width=800
+editor.fx.0.x=320
+editor.fx.0.y=50
+objectbench.height=164
+objectbench.width=776
+package.divider.horizontal=0.6
+package.divider.vertical=0.6845018450184502
+package.editor.height=364
+package.editor.width=674
+package.editor.x=577
+package.editor.y=61
+package.frame.height=600
+package.frame.width=800
+package.numDependencies=2
+package.numTargets=3
+package.showExtends=true
+package.showUses=true
+project.charset=UTF-8
+readme.height=58
+readme.name=@README
+readme.width=47
+readme.x=10
+readme.y=10
+target1.height=50
+target1.name=Item
+target1.showInterface=false
+target1.type=ClassTarget
+target1.width=80
+target1.x=10
+target1.y=100
+target2.height=50
+target2.name=InventoryTest
+target2.showInterface=false
+target2.type=UnitTestTargetJunit4
+target2.width=80
+target2.x=40
+target2.y=160
+target3.association=InventoryTest
+target3.height=50
+target3.name=Inventory
+target3.showInterface=false
+target3.type=ClassTarget
+target3.width=80
+target3.x=10
+target3.y=190