Added more tests and fixed changelog

tests/Unit/Controllers/IntegrationsController/NotificationTest.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Tests\Unit\Controllers\IntegrationsController;
+
+use App\Http\Controllers\IntegrationsController;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class NotificationTest extends TestCase
+{
+    use RefreshDatabase;
+
+    /**
+     * Controller
+     *
+     * @var IntegrationsController
+     */
+    private $controller;
+
+    public function setUp() : void
+    {
+        parent::setUp();
+
+        $this->controller = new IntegrationsController();
+    }
+
+    public function testNotificationsTest()
+    {
+        $resp = $this->controller->testNotification()->original;
+
+        $this->assertEquals([
+            'method' => 'test notification agents'
+        ], $resp);
+    }
+}