Quantity tests on simple products running.

php7/src/GildedRose.php

@@ -63,7 +63,6 @@ final class GildedRose
                 continue;
             }
             
-            
             if ($item->name !== 'Aged Brie' && $item->name !== 'Backstage passes to a TAFKAL80ETC concert') {
                 if ($item->quality > 0) {
                     if (strstr($item->name, 'Conjured', true) === '') {
@@ -88,7 +87,6 @@ final class GildedRose
                 }
             }
 
-            
             if ($item->sell_in < 0) {
                 if ($item->name !== 'Aged Brie') {
                     if ($item->name === 'Backstage passes to a TAFKAL80ETC concert') {

php7/test/GildedRoseTest.php

@@ -80,6 +80,34 @@ class GildedRoseTest extends \PHPUnit\Framework\TestCase
         $this->assertEquals(5, $app->getItems()[1]->sell_in);
         $this->assertEquals(1, $app->getItems()[2]->sell_in);
         
-    } 
+    }
+
+    /**
+     * Simple products quality and quantity test 
+     *
+     * @return void
+     */
+    public function testSimpleProducts()
+    {
+        $items = [
+            new Item('Elixir of the Mongoose', 16, 24),
+            new Item('Elixir of the Mongoose', 14, 32),
+            new Item('Elixir of the Mongoose', 12, 36),
+            new Item('Elixir of the Mongoose', 18, 25),
+        ];
+
+        $interval = 5;
+        $app = new GildedRose($items);
+
+        for ($i = 0; $i < $interval; $i++) {
+            $app->updateQuality();
+        }
+
+        $this->assertEquals(11, $app->getItems()[0]->sell_in);
+        $this->assertEquals(9, $app->getItems()[1]->sell_in);
+        $this->assertEquals(7, $app->getItems()[2]->sell_in);
+        $this->assertEquals(13, $app->getItems()[3]->sell_in);
+
+    }
 
 }