a relevant example for iterator

Tests/Iterator/IteratorTest.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\Tests\Iterator;
+
+use DesignPatterns\Iterator\CardGame;
+
+/**
+ * IteratorTest the CardGame iterator
+ *
+ * @author flo
+ */
+class IteratorTest extends \PHPUnit_Framework_TestCase
+{
+
+    protected $game;
+
+    protected function setUp()
+    {
+        $this->game = new CardGame();
+    }
+
+    /**
+     * This is the client of the iterator.
+     * It remains unchanged even if one I decide to use MongoDB to store the
+     * card.
+     */
+    public function testCardinal()
+    {
+        $counter = 0;
+        foreach ($this->game as $key => $card) {
+            $counter++;
+        }
+
+        $this->assertEquals(32, $counter);
+    }
+
+    /**
+     * Some fancy functions of PHP.
+     */
+    public function testExampleOf_PHP_Helper()
+    {
+        // PHPUnit works on array or iterator :
+        $this->assertCount(32, $this->game);
+        // a easy way to get an array from interator :
+        $cards = iterator_to_array($this->game);
+        $this->assertEquals('A of S', $cards['SA']);
+        // a easy way to get an iterator from an array :
+        $iterator = new \ArrayIterator($cards);
+        $this->assertInstanceOf('\Iterator', $iterator);
+    }
+
+}