Stub out some tests

src/Speakers/tests/SpeakerTest.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Tests\Speakers;
+
+use App\Speakers\TwigExtension\SpeakersExtension;
+use PHPUnit\Framework\TestCase;
+
+class SpeakerTest extends TestCase
+{
+    /**
+     * @var \App\Speakers\TwigExtension\SpeakersExtension
+     */
+    private $extension;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->extension = new SpeakersExtension();
+    }
+
+    /** @test */
+    public function get_sessions_for_a_speaker()
+    {
+        $this->markTestIncomplete();
+    }
+
+    /** @test */
+    public function get_speakers_for_a_session()
+    {
+        $this->markTestIncomplete();
+    }
+}