added unit tests

tests/Integration/CoachesActivityTest.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Integration;
+
+use Tests\Support\DatabaseSeeder;
+use Tests\Support\QdbTestCase;
+
+final class CoachesActivityTest extends QdbTestCase
+{
+    public function testCoachRecentSubmissions(): void
+    {
+        $this->submitFixtureQuestionnaire();
+        $token = $this->api()->loginWebAndGetToken(
+            DatabaseSeeder::SUPERVISOR_USERNAME,
+            DatabaseSeeder::PASSWORD
+        )['token'];
+        $res = $this->api()->withToken($token, 'GET', 'coaches', null, [
+            'coachID' => $this->fixture()->coachId,
+            'recent'  => '1',
+            'limit'   => '10',
+        ]);
+        $this->assertApiOk($res);
+        $this->assertArrayHasKey('submissions', $res['data']);
+    }
+}