test: add StaticBag tests

tests/Prime/Storage/Bag/StaticBagTest.php

@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of the PHPFlasher package.
+ * (c) Younes KHOUBZA <younes.khoubza@gmail.com>
+ */
+
+namespace Flasher\Tests\Prime\Storage\Bag;
+
+use Flasher\Prime\Notification\Envelope;
+use Flasher\Prime\Notification\Notification;
+use Flasher\Prime\Storage\Bag\StaticBag;
+use Flasher\Tests\Prime\TestCase;
+
+class StaticBagTest extends TestCase
+{
+    /**
+     * @return void
+     */
+    public function testStaticBag()
+    {
+        $bag = new StaticBag();
+
+        $envelopes = array(
+            new Envelope(new Notification()),
+            new Envelope(new Notification()),
+        );
+
+        $bag->set($envelopes);
+
+        $this->assertEquals($envelopes, $bag->get());
+    }
+}