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Create InventoryItem class and refactor access methods

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This commit is contained in:
Roberto de la Banda 2021-09-11 14:44:10 +02:00
parent 688d88ab1d
commit 54ec015566
9 changed files with 189 additions and 64 deletions
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60
Java/src/main/java/com/gildedrose/AgedBrie.java Normal file
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@ -0,0 +1,60 @@
package com.gildedrose;
import static com.gildedrose.Constants.*;
public class AgedBrie extends InventoryItem {
public AgedBrie(Item item) {
super(item);
}
@Override
void age() {
if (item.name.equals(AGED_BRIE)
|| item.name.equals(BACKSTAGE)) {
if (item.quality < 50) {
item.quality = item.quality + 1;
if (item.name.equals(BACKSTAGE)) {
if (item.sellIn < 11) {
if (item.quality < 50) {
item.quality = item.quality + 1;
}
}
if (item.sellIn < 6) {
if (item.quality < 50) {
item.quality = item.quality + 1;
}
}
}
}
} else {
if (item.quality > 0) {
if (!item.name.equals(SULFURAS)) {
item.quality = item.quality - 1;
}
}
}
if (!item.name.equals(SULFURAS)) {
item.sellIn = item.sellIn - 1;
}
if (item.sellIn < 0) {
if (item.name.equals(AGED_BRIE)) {
if (item.quality < 50) {
item.quality = item.quality + 1;
}
} else {
if (!item.name.equals(BACKSTAGE)) {
if (item.quality > 0) {
if (!item.name.equals(SULFURAS)) {
item.quality = item.quality - 1;
}
}
} else {
item.quality = 0;
}
}
}
}
}

60
Java/src/main/java/com/gildedrose/Backstage.java Normal file
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@ -0,0 +1,60 @@
package com.gildedrose;
import static com.gildedrose.Constants.*;
public class Backstage extends InventoryItem {
public Backstage(Item item) {
super(item);
}
@Override
void age() {
if (item.name.equals(AGED_BRIE)
|| item.name.equals(BACKSTAGE)) {
if (item.quality < 50) {
item.quality = item.quality + 1;
if (item.name.equals(BACKSTAGE)) {
if (item.sellIn < 11) {
if (item.quality < 50) {
item.quality = item.quality + 1;
}
}
if (item.sellIn < 6) {
if (item.quality < 50) {
item.quality = item.quality + 1;
}
}
}
}
} else {
if (item.quality > 0) {
if (!item.name.equals(SULFURAS)) {
item.quality = item.quality - 1;
}
}
}
if (!item.name.equals(SULFURAS)) {
item.sellIn = item.sellIn - 1;
}
if (item.sellIn < 0) {
if (item.name.equals(AGED_BRIE)) {
if (item.quality < 50) {
item.quality = item.quality + 1;
}
} else {
if (!item.name.equals(BACKSTAGE)) {
if (item.quality > 0) {
if (!item.name.equals(SULFURAS)) {
item.quality = item.quality - 1;
}
}
} else {
item.quality = 0;
}
}
}
}
}

9
Java/src/main/java/com/gildedrose/Constants.java Normal file
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@ -0,0 +1,9 @@
package com.gildedrose;
public final class Constants {
public static final String BACKSTAGE = "Backstage passes to a TAFKAL80ETC concert";
public static final String AGED_BRIE = "Aged Brie";
public static final String SULFURAS = "Sulfuras, Hand of Ragnaros";
private Constants() {
}
}

60
Java/src/main/java/com/gildedrose/GildedRose.java
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@ -1,65 +1,17 @@
package com.gildedrose;
import java.util.Arrays;
class GildedRose {
public static final String BACKSTAGE = "Backstage passes to a TAFKAL80ETC concert";
public static final String AGED_BRIE = "Aged Brie";
public static final String SULFURAS = "Sulfuras, Hand of Ragnaros";
Item[] items;
public GildedRose(Item[] items) {
this.items = items;
}
public void updateQuality() {
for (Item item : items) {
if (!item.name.equals(AGED_BRIE)
&& !item.name.equals(BACKSTAGE)) {
if (item.quality > 0) {
if (!item.name.equals(SULFURAS)) {
item.quality = item.quality - 1;
}
}
} else {
if (item.quality < 50) {
item.quality = item.quality + 1;
if (item.name.equals(BACKSTAGE)) {
if (item.sellIn < 11) {
if (item.quality < 50) {
item.quality = item.quality + 1;
}
}
if (item.sellIn < 6) {
if (item.quality < 50) {
item.quality = item.quality + 1;
}
}
}
}
}
if (!item.name.equals(SULFURAS)) {
item.sellIn = item.sellIn - 1;
}
if (item.sellIn < 0) {
if (!item.name.equals(AGED_BRIE)) {
if (!item.name.equals(BACKSTAGE)) {
if (item.quality > 0) {
if (!item.name.equals(SULFURAS)) {
item.quality = item.quality - 1;
}
}
} else {
item.quality = item.quality - item.quality;
}
} else {
if (item.quality < 50) {
item.quality = item.quality + 1;
}
}
}
}
public static void updateQuality(GildedRose gildedRose) {
Arrays.stream(gildedRose.items).forEach(item -> InventoryItem.createInventoryItem(item).age());
}
}

32
Java/src/main/java/com/gildedrose/InventoryItem.java Normal file
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@ -0,0 +1,32 @@
package com.gildedrose;
import static com.gildedrose.Constants.*;
public class InventoryItem {
protected final Item item;
InventoryItem(Item item) {
this.item = item;
}
public static InventoryItem createInventoryItem(Item item) {
if (item.name.equals(SULFURAS)) return new Sulfuras(item);
if (item.name.equals(AGED_BRIE)) return new AgedBrie(item);
if (item.name.equals(BACKSTAGE)) return new Backstage(item);
return new InventoryItem(item);
}
void age() {
decreaseQuality();
decreaseSellIn();
if (item.sellIn < 0) decreaseQuality();
}
protected void decreaseSellIn() {
item.sellIn = item.sellIn - 1;
}
protected void decreaseQuality() {
if (item.quality > 0) item.quality = item.quality - 1;
}
}

12
Java/src/main/java/com/gildedrose/Sulfuras.java Normal file
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@ -0,0 +1,12 @@
package com.gildedrose;
public class Sulfuras extends InventoryItem {
public Sulfuras(Item item) {
super(item);
}
@Override
void age() {
// Sulfuras never changes its properties
}
}

16
Java/src/test/java/com/gildedrose/GildedRoseTest.java
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@ -10,35 +10,35 @@ class GildedRoseTest {
void foo() {
Item[] items = new Item[]{new Item("foo", 0, 0)};
GildedRose app = new GildedRose(items);
app.updateQuality();
GildedRose.updateQuality(app);
assertEquals("foo", app.items[0].name);
}
@Test
void degradesTwiceAsFastAfterSellInDateHasPassed() {
Item[] items = new Item[]{new Item("foo", 0, 2)};
new GildedRose(items).updateQuality();
GildedRose.updateQuality(new GildedRose(items));
assertEquals(0, items[0].quality);
}
@Test
void neverMustHaveNegativeQuality() {
Item[] items = new Item[]{new Item("foo", 0, 0)};
new GildedRose(items).updateQuality();
GildedRose.updateQuality(new GildedRose(items));
assertEquals(0, items[0].quality);
}
@Test
void increaseAgedBrieQualityWhenItGetsOlder() {
Item[] items = new Item[]{new Item("Aged Brie", 0, 2)};
new GildedRose(items).updateQuality();
GildedRose.updateQuality(new GildedRose(items));
assertEquals(4, items[0].quality);
}
@Test
void neverMustHaveAnItemWithMoreThan50OfQuality() {
Item[] items = new Item[]{new Item("Aged Brie", 0, 50)};
new GildedRose(items).updateQuality();
GildedRose.updateQuality(new GildedRose(items));
assertEquals(50, items[0].quality);
}
@ -46,14 +46,14 @@ class GildedRoseTest {
@Test
void neverModifySulfurasQuality() {
Item[] items = new Item[]{new Item("Sulfuras, Hand of Ragnaros", 0, 50)};
new GildedRose(items).updateQuality();
GildedRose.updateQuality(new GildedRose(items));
assertEquals(50, items[0].quality);
}
@Test
void neverModifySulfurasQualityEvenISGreaterThan50() {
Item[] items = new Item[]{new Item("Sulfuras, Hand of Ragnaros", 0, 80)};
new GildedRose(items).updateQuality();
GildedRose.updateQuality(new GildedRose(items));
assertEquals(80, items[0].quality);
}
@ -62,7 +62,7 @@ class GildedRoseTest {
Item[] items = new Item[]{new Item("Backstage passes to a TAFKAL80ETC concert", 15, 20),
new Item("Backstage passes to a TAFKAL80ETC concert", 10, 20),
new Item("Backstage passes to a TAFKAL80ETC concert", 5, 20)};
new GildedRose(items).updateQuality();
GildedRose.updateQuality(new GildedRose(items));
assertEquals(21, items[0].quality);
assertEquals(22, items[1].quality);
assertEquals(23, items[2].quality);

2
Java/src/test/java/com/gildedrose/GoldenMasterApprovalTest.java
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@ -36,7 +36,7 @@ class GoldenMasterApprovalTest {
.setSellIn(sellIn)
.setQuality(quality)
.createItem();
new GildedRose(new Item[]{item}).updateQuality();
GildedRose.updateQuality(new GildedRose(new Item[]{item}));
return item;
}
}

2
Java/src/test/java/com/gildedrose/TexttestFixture.java
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@ -30,7 +30,7 @@ public class TexttestFixture {
System.out.println(item);
}
System.out.println();
app.updateQuality();
GildedRose.updateQuality(app);
}
}