Add sequential speedtest mode

app/Actions/CheckForScheduledSpeedtests.php

@@ -18,10 +18,28 @@ public function handle(): void
             return;
         }
 
-        RunSpeedtest::runIf(
-            $this->isSpeedtestDue(schedule: $schedule),
-            scheduled: true,
-        );
+        if (! $this->isSpeedtestDue(schedule: $schedule)) {
+            return;
+        }
+
+        if (config('speedtest.mode', 'random') === 'sequential') {
+            $servers = array_filter(
+                array_map('trim', explode(',', (string) config('speedtest.servers')))
+            );
+
+            if (count($servers)) {
+                foreach ($servers as $serverId) {
+                    RunSpeedtest::run(
+                        scheduled: true,
+                        serverId: (int) $serverId,
+                    );
+                }
+
+                return;
+            }
+        }
+
+        RunSpeedtest::run(scheduled: true);
     }
 
     /**

config/speedtest.php

@@ -25,6 +25,8 @@
 
     'servers' => env('SPEEDTEST_SERVERS'),
 
+    'mode' => env('SPEEDTEST_MODE', 'random'),
+
     'blocked_servers' => env('SPEEDTEST_BLOCKED_SERVERS'),
 
     'interface' => env('SPEEDTEST_INTERFACE'),

tests/Feature/ScheduledSpeedtestModeTest.php

@@ -0,0 +1,35 @@
+<?php
+
+use App\Actions\CheckForScheduledSpeedtests;
+use App\Models\Result;
+use Illuminate\Support\Facades\Bus;
+use Illuminate\Support\Facades\Cache;
+
+beforeEach(function () {
+    Cache::flush();
+    Bus::fake();
+});
+
+test('runs single speedtest when mode random', function () {
+    config()->set('speedtest.schedule', '* * * * *');
+    config()->set('speedtest.mode', 'random');
+    config()->set('speedtest.servers', '1,2');
+
+    CheckForScheduledSpeedtests::run();
+
+    expect(Result::count())->toBe(1);
+});
+
+test('runs sequential speedtests when mode sequential', function () {
+    config()->set('speedtest.schedule', '* * * * *');
+    config()->set('speedtest.mode', 'sequential');
+    config()->set('speedtest.servers', '1,2');
+
+    CheckForScheduledSpeedtests::run();
+
+    expect(Result::count())->toBe(2);
+    expect(Result::orderBy('id')->pluck('data->server->id')->toArray())->toBe([
+        1,
+        2,
+    ]);
+});