Finish re-working tests to run on test database

tests/Unit/MicropubClientsTest.php

@@ -6,14 +6,18 @@ namespace Tests\Unit;
 
 use App\Models\MicropubClient;
 use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Foundation\Testing\RefreshDatabase;
 use Tests\TestCase;
 
 class MicropubClientsTest extends TestCase
 {
+    use RefreshDatabase;
+
     /** @test */
     public function weCanGetNotesRelatingToClient(): void
     {
-        $client = MicropubClient::find(1);
+        $client = MicropubClient::factory()->make();
+
         $this->assertInstanceOf(Collection::class, $client->notes);
     }
 }