Integration Tests for Abban's Test

InventoryItemTest.php

<?php namespace GildedRose\Tests;

use GildedRose\InventoryItem;
use GildedRose\InventoryItemLegendary;
use GildedRose\InventoryItemTicket;
use GildedRose\Program;
use PHPUnit\Framework\TestCase;


class InventoryItemTest extends TestCase
{
    /** @test */
    public function InventoryItem_OnSetQuality_SetsCorrectValues()
    {
        $app = new Program([new InventoryItem(['name' => "+5 Dexterity Vest", 'sellIn' => 10, 'quality' => 20], -1)]);

        $this->assertEquals(20, $app->getItems()[0]->getItem()->quality, "Did not set correct quality");
        $this->assertEquals(10, $app->getItems()[0]->getItem()->sellIn, "Did not set correct Sell In");
    }


    /** @test */
    public function InventoryItem_OnUpdate_AdjustsQualityByCorrectValue()
    {
        $app = new Program([new InventoryItem(['name' => "+5 Dexterity Vest", 'sellIn' => 10, 'quality' => 20], -1)]);

        $app->UpdateQuality();

        $this->assertEquals(19, $app->getItems()[0]->getItem()->quality, "Did not adjust correct quality");
    }


    /** @test */
    public function InventoryItem_OnUpdate_DropsSellInByCorrectValue()
    {
        $app = new Program([new InventoryItem(['name' => "+5 Dexterity Vest", 'sellIn' => 10, 'quality' => 20], -1)]);

        $app->UpdateQuality();

        $this->assertEquals(9, $app->getItems()[0]->getItem()->sellIn, "Did not adjust correct sellIn");
    }


    /** @test */
    public function InventoryItem_OnUpdate_QualityDoesNotDropBelow0()
    {
        $app = new Program([new InventoryItem(['name' => "+5 Dexterity Vest", 'sellIn' => 10, 'quality' => 0], -1)]);

        $app->UpdateQuality();

        $this->assertEquals(0, $app->getItems()[0]->getItem()->quality, "Quality dropped below zero");
    }


    /** @test */
    public function InventoryItem_OnUpdate_QualityDoesNotGoAbove50()
    {
        $app = new Program([new InventoryItem(['name' => "+5 Dexterity Vest", 'sellIn' => 10, 'quality' => 45], 10)]);

        $app->UpdateQuality();

        $this->assertEquals(50, $app->getItems()[0]->getItem()->quality, "Quality went above 50");
    }


    /** @test */
    public function InventoryItem_OnUpdateBelow0SellIn_AdjustsQualityByCorrectValue()
    {
        $app = new Program([new InventoryItem(['name' => "+5 Dexterity Vest", 'sellIn' => 0, 'quality' => 20], -1)]);

        $app->UpdateQuality();

        $this->assertEquals(18, $app->getItems()[0]->getItem()->quality, "Did not adjust correct quality");
    }


    /** @test */
    public function LegendaryItem_OnUpdate_DoesNothing()
    {
        $app = new Program([new InventoryItemLegendary(['name' => "+5 Dexterity Vest", 'sellIn' => 10, 'quality' => 20], -1)]);

        $app->UpdateQuality();

        $this->assertEquals(20, $app->getItems()[0]->getItem()->quality, "Legendary Item quality changed");
        $this->assertEquals(10, $app->getItems()[0]->getItem()->sellIn, "Legendary Item sellIn changed");
    }


    /** @test */
    public function TicketItem_OnUpdateOver10SellIn_AdjustsQualityByCorrectValue()
    {
        $app = new Program([new InventoryItemTicket(['name' => "+5 Dexterity Vest", 'sellIn' => 12, 'quality' => 20], -1)]);

        $app->UpdateQuality();

        $this->assertEquals(21, $app->getItems()[0]->getItem()->quality, "Did not adjust correct quality on ticket item");
    }


    /** @test */
    public function TicketItem_OnUpdateUnder10SellIn_AdjustsQualityByCorrectValue()
    {
        $app = new Program([new InventoryItemTicket(['name' => "+5 Dexterity Vest", 'sellIn' => 10, 'quality' => 20], -1)]);

        $app->UpdateQuality();

        $this->assertEquals(22, $app->getItems()[0]->getItem()->quality, "Did not adjust correct quality on ticket item");
    }


    /** @test */
    public function TicketItem_OnUpdateUnder5SellIn_AdjustsQualityByCorrectValue()
    {
        $app = new Program([new InventoryItemTicket(['name' => "+5 Dexterity Vest", 'sellIn' => 5, 'quality' => 20], -1)]);

        $app->UpdateQuality();

        $this->assertEquals(23, $app->getItems()[0]->getItem()->quality, "Did not adjust correct quality on ticket item");
    }


    /** @test */
    public function TicketItem_OnUpdateUnder0SellIn_AdjustsQualityByCorrectValue()
    {
        $app = new Program([new InventoryItemTicket(['name' => "+5 Dexterity Vest", 'sellIn' => 0, 'quality' => 20], -1)]);

        $app->UpdateQuality();

        $this->assertEquals(0, $app->getItems()[0]->getItem()->quality, "Did not adjust correct quality on ticket item");
    }
}