Feat/shoe

src/Domain/Shoe.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Domain;
+
+final class Shoe
+{
+    private array $cards = [];
+
+    public function __construct(int $decks = 1)
+    {
+        $ranks = ['2', '3', '4', '5', '6', '7', '8', '9', '10', 'Jack', 'Queen', 'King', 'Ace'];
+        $suits = ['Hearts', 'Diamonds', 'Clubs', 'Spades'];
+
+        for ($i = 0; $i < $decks; $i++) {
+            foreach ($suits as $suit) {
+                foreach ($ranks as $rank) {
+                    $this->cards[] = new Card($rank, $suit);
+                }
+            }
+        }
+    }
+
+    public function count(): int
+    {
+        return count($this->cards);
+    }
+
+    public function draw(): Card
+    {
+        return array_shift($this->cards);
+    }
+
+    public function shuffle(): void
+    {
+        shuffle($this->cards);
+    }
+}

tests/Domain/ShoeTest.php

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+<?php
+
+namespace App\Tests\Domain;
+
+use App\Domain\Card;
+use App\Domain\Shoe;
+use PHPUnit\Framework\TestCase;
+
+final class ShoeTest extends TestCase
+{
+    public function testShoeWithOneDeckHas52Cards(): void
+    {
+        $shoe = new Shoe(1);
+
+        $this->assertSame(52, $shoe->count());
+    }
+
+    public function testDrawReturnsACard(): void
+    {
+        $shoe = new Shoe(1);
+        $card = $shoe->draw();
+
+        $this->assertInstanceOf(Card::class, $card);
+    }
+
+    public function testDrawReducesCardCount(): void
+    {
+        $shoe = new Shoe(1);
+        $shoe->draw();
+
+        $this->assertSame(51, $shoe->count());
+    }
+
+    public function testShuffleRandomizesCards(): void
+    {
+        $shoe1 = new Shoe(1);
+        $shoe2 = new Shoe(1);
+        $shoe2->shuffle();
+
+        $cards1 = [];
+        $cards2 = [];
+
+        for ($i = 0; $i < 52; $i++) {
+            $cards1[] = $shoe1->draw()->rank();
+            $cards2[] = $shoe2->draw()->rank();
+        }
+
+        $this->assertNotEquals($cards1, $cards2);
+    }
+}