Upgrade Laravel to 5.8

app/Http/Middleware/UseDifferentConfigIfE2E.php

@@ -4,6 +4,7 @@ namespace App\Http\Middleware;
 
 use Closure;
 use Illuminate\Http\Request;
+use Illuminate\Support\Arr;
 
 /**
  * Check if the app is running in an E2E session and use the proper data settings.
@@ -15,7 +16,7 @@ class UseDifferentConfigIfE2E
      */
     public function handle(Request $request, Closure $next)
     {
-        if (array_get($_SERVER, 'SERVER_PORT') === '8081') {
+        if (Arr::get($_SERVER, 'SERVER_PORT') === '8081') {
             config(['database.default' => 'sqlite-e2e']);
         }
 

app/Services/MediaCacheService.php

@@ -30,7 +30,7 @@ class MediaCacheService
             return $this->query();
         }
 
-        return $this->cache->rememberForever(self::CACHE_KEY, function () {
+        return $this->cache->rememberForever(self::CACHE_KEY, function (): array {
             return $this->query();
         });
     }

composer.json

@@ -6,7 +6,7 @@
   "type": "project",
   "require": {
     "php": ">=7.1.3",
-    "laravel/framework": "5.7.*",
+    "laravel/framework": "5.8.*",
     "james-heinrich/getid3": "^1.9",
     "guzzlehttp/guzzle": "^6.1",
     "tymon/jwt-auth": "^0.5.6",
@@ -20,7 +20,8 @@
     "ext-json": "*",
     "ext-SimpleXML": "*",
     "fideloper/proxy": "^4.0",
-    "daverandom/resume": "^0.0.3"
+    "daverandom/resume": "^0.0.3",
+    "laravel/helpers": "^1.0"
   },
   "require-dev": {
     "filp/whoops": "~2.0",

tests/Feature/DownloadTest.php

@@ -24,14 +24,15 @@ class DownloadTest extends TestCase
     /**
      * @throws Exception
      */
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->createSampleMediaSet();
         $this->downloadService = $this->mockIocDependency(DownloadService::class);
+
     }
 
-    public function testDownloadOneSong()
+    public function testDownloadOneSong(): void
     {
         $song = Song::first();
 
@@ -47,7 +48,7 @@ class DownloadTest extends TestCase
             ->assertResponseOk();
     }
 
-    public function testDownloadMultipleSongs()
+    public function testDownloadMultipleSongs(): void
     {
         $songs = Song::take(2)->orderBy('id')->get();
 
@@ -66,7 +67,7 @@ class DownloadTest extends TestCase
             ->assertResponseOk();
     }
 
-    public function testDownloadAlbum()
+    public function testDownloadAlbum(): void
     {
         $album = Album::first();
 
@@ -82,7 +83,7 @@ class DownloadTest extends TestCase
             ->assertResponseOk();
     }
 
-    public function testDownloadArtist()
+    public function testDownloadArtist(): void
     {
         $artist = Artist::first();
 
@@ -98,7 +99,7 @@ class DownloadTest extends TestCase
             ->assertResponseOk();
     }
 
-    public function testDownloadPlaylist()
+    public function testDownloadPlaylist(): void
     {
         $user = factory(User::class)->create();
 
@@ -122,7 +123,7 @@ class DownloadTest extends TestCase
             ->assertResponseOk();
     }
 
-    public function testDownloadFavorites()
+    public function testDownloadFavorites(): void
     {
         /** @var User $user */
         $user = factory(User::class)->create();

tests/Feature/InteractionTest.php

@@ -12,14 +12,14 @@ class InteractionTest extends TestCase
     /**
      * @throws Exception
      */
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->createSampleMediaSet();
     }
 
     /** @test */
-    public function play_count_is_increased()
+    public function play_count_is_increased(): void
     {
         $this->withoutEvents();
         $user = factory(User::class)->create();
@@ -48,7 +48,7 @@ class InteractionTest extends TestCase
      *
      * @throws Exception
      */
-    public function user_can_like_and_unlike_a_song()
+    public function user_can_like_and_unlike_a_song(): void
     {
         $this->expectsEvents(SongLikeToggled::class);
 
@@ -78,7 +78,7 @@ class InteractionTest extends TestCase
      *
      * @throws Exception
      */
-    public function user_can_like_and_unlike_songs_in_batch()
+    public function user_can_like_and_unlike_songs_in_batch(): void
     {
         $this->expectsEvents(SongLikeToggled::class);
 

tests/Feature/MediaSyncTest.php

@@ -20,7 +20,7 @@ class MediaSyncTest extends TestCase
     /** @var MediaSyncService */
     private $mediaService;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->mediaService = app(MediaSyncService::class);
@@ -31,7 +31,7 @@ class MediaSyncTest extends TestCase
      *
      * @throws Exception
      */
-    public function songs_can_be_synced()
+    public function songs_can_be_synced(): void
     {
         $this->expectsEvents(LibraryChanged::class);
 
@@ -97,7 +97,7 @@ class MediaSyncTest extends TestCase
      *
      * @throws Exception
      */
-    public function songs_can_be_force_synced()
+    public function songs_can_be_force_synced(): void
     {
         $this->expectsEvents(LibraryChanged::class);
 
@@ -135,7 +135,7 @@ class MediaSyncTest extends TestCase
      *
      * @throws Exception
      */
-    public function songs_can_be_synced_with_selectively_tags()
+    public function songs_can_be_synced_with_selectively_tags(): void
     {
         $this->expectsEvents(LibraryChanged::class);
 
@@ -164,7 +164,7 @@ class MediaSyncTest extends TestCase
      *
      * @throws Exception
      */
-    public function all_tags_are_catered_for_if_syncing_new_file()
+    public function all_tags_are_catered_for_if_syncing_new_file(): void
     {
         // First we sync the test directory to get the data
         $this->mediaService->sync($this->mediaPath);
@@ -189,7 +189,7 @@ class MediaSyncTest extends TestCase
      *
      * @throws Exception
      */
-    public function added_song_is_synced_when_watching()
+    public function added_song_is_synced_when_watching(): void
     {
         $this->expectsEvents(LibraryChanged::class);
 
@@ -205,7 +205,7 @@ class MediaSyncTest extends TestCase
      *
      * @throws Exception
      */
-    public function deleted_song_is_synced_when_watching()
+    public function deleted_song_is_synced_when_watching(): void
     {
         $this->expectsEvents(LibraryChanged::class);
 
@@ -222,7 +222,7 @@ class MediaSyncTest extends TestCase
      *
      * @throws Exception
      */
-    public function deleted_directory_is_synced_when_watching()
+    public function deleted_directory_is_synced_when_watching(): void
     {
         $this->expectsEvents(LibraryChanged::class);
 
@@ -236,7 +236,7 @@ class MediaSyncTest extends TestCase
     }
 
     /** @test */
-    public function html_entities_in_tags_are_recognized_and_saved_properly()
+    public function html_entities_in_tags_are_recognized_and_saved_properly(): void
     {
         $this->mockIocDependency(getID3::class, [
             'analyze' => [
@@ -266,7 +266,7 @@ class MediaSyncTest extends TestCase
      *
      * @throws Exception
      */
-    public function hidden_files_can_optionally_be_ignored_when_syncing()
+    public function hidden_files_can_optionally_be_ignored_when_syncing(): void
     {
         config(['koel.ignore_dot_files' => false]);
         $this->mediaService->sync($this->mediaPath);

tests/Feature/ObjectStorage/S3Test.php

@@ -15,13 +15,13 @@ class S3Test extends TestCase
     /**
      * @throws Exception
      */
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->disableMiddlewareForAllTests();
     }
 
-    public function testStoringASong()
+    public function testStoringASong(): void
     {
         $this->post('api/os/s3/song', [
             'bucket' => 'koel',
@@ -40,7 +40,7 @@ class S3Test extends TestCase
     /**
      * @throws Exception
      */
-    public function testRemovingASong()
+    public function testRemovingASong(): void
     {
         $this->expectsEvents(LibraryChanged::class);
 

tests/Feature/PlaylistTest.php

@@ -12,13 +12,13 @@ class PlaylistTest extends TestCase
     /**
      * @throws Exception
      */
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->createSampleMediaSet();
     }
 
-    public function testCreatingPlaylist()
+    public function testCreatingPlaylist(): void
     {
         $user = factory(User::class)->create();
         $songs = Song::orderBy('id')->take(3)->get();
@@ -51,7 +51,7 @@ class PlaylistTest extends TestCase
     }
 
     /** @test */
-    public function user_can_update_a_playlists_name()
+    public function user_can_update_a_playlists_name(): void
     {
         $user = factory(User::class)->create();
 
@@ -72,7 +72,7 @@ class PlaylistTest extends TestCase
     }
 
     /** @test */
-    public function playlists_can_be_synced()
+    public function playlists_can_be_synced(): void
     {
         $user = factory(User::class)->create();
 
@@ -109,7 +109,7 @@ class PlaylistTest extends TestCase
     }
 
     /** @test */
-    public function user_can_delete_a_playlist()
+    public function user_can_delete_a_playlist(): void
     {
         $user = factory(User::class)->create();
 
@@ -125,7 +125,7 @@ class PlaylistTest extends TestCase
     }
 
     /** @test */
-    public function playlist_content_can_be_retrieved()
+    public function playlist_content_can_be_retrieved(): void
     {
         $user = factory(User::class)->create();
 

tests/Feature/ProfileTest.php

@@ -11,14 +11,14 @@ class ProfileTest extends TestCase
     /** @var MockInterface */
     private $hash;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
         $this->hash = $this->mockIocDependency(Hasher::class);
     }
 
-    public function testUpdateProfileWithoutPassword()
+    public function testUpdateProfileWithoutPassword(): void
     {
         $user = factory(User::class)->create();
 
@@ -29,7 +29,7 @@ class ProfileTest extends TestCase
         $this->seeInDatabase('users', ['name' => 'Foo', 'email' => 'bar@baz.com']);
     }
 
-    public function testUpdateProfileWithPassword()
+    public function testUpdateProfileWithPassword(): void
     {
         /** @var User $user */
         $user = factory(User::class)->create();

tests/Feature/SettingTest.php

@@ -12,13 +12,13 @@ class SettingTest extends TestCase
     /** @var MockInterface */
     private $mediaSyncService;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->mediaSyncService = $this->mockIocDependency(MediaSyncService::class);
     }
 
-    public function testSaveSettings()
+    public function testSaveSettings(): void
     {
         $this->mediaSyncService->shouldReceive('sync')->once();
 

tests/Feature/SongTest.php

@@ -14,7 +14,7 @@ class SongTest extends TestCase
     /**
      * @throws Exception
      */
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
@@ -24,7 +24,7 @@ class SongTest extends TestCase
     /**
      * @throws Exception
      */
-    public function testSingleUpdateAllInfoNoCompilation()
+    public function testSingleUpdateAllInfoNoCompilation(): void
     {
         $this->expectsEvents(LibraryChanged::class);
         $song = Song::orderBy('id', 'desc')->first();
@@ -57,7 +57,7 @@ class SongTest extends TestCase
         ]);
     }
 
-    public function testSingleUpdateSomeInfoNoCompilation()
+    public function testSingleUpdateSomeInfoNoCompilation(): void
     {
         $song = Song::orderBy('id', 'desc')->first();
         $originalArtistId = $song->album->artist->id;
@@ -83,7 +83,7 @@ class SongTest extends TestCase
         $this->assertEquals('One by One', Song::find($song->id)->album->name);
     }
 
-    public function testMultipleUpdateAllInfoNoCompilation()
+    public function testMultipleUpdateAllInfoNoCompilation(): void
     {
         $songIds = Song::orderBy('id', 'desc')->take(3)->pluck('id')->toArray();
 
@@ -119,7 +119,7 @@ class SongTest extends TestCase
         $this->assertEquals('John Cena', $songs[2]->album->artist->name);
     }
 
-    public function testMultipleUpdateSomeInfoNoCompilation()
+    public function testMultipleUpdateSomeInfoNoCompilation(): void
     {
         $originalSongs = Song::orderBy('id', 'desc')->take(3)->get();
         $songIds = $originalSongs->pluck('id')->toArray();
@@ -155,7 +155,7 @@ class SongTest extends TestCase
         $this->assertEquals('John Cena', $songs[2]->album->artist->name); // And... JOHN CENAAAAAAAAAAA!!!
     }
 
-    public function testSingleUpdateAllInfoYesCompilation()
+    public function testSingleUpdateAllInfoYesCompilation(): void
     {
         $song = Song::orderBy('id', 'desc')->first();
 
@@ -306,7 +306,7 @@ class SongTest extends TestCase
     /**
      * @throws Exception
      */
-    public function testDeletingByChunk()
+    public function testDeletingByChunk(): void
     {
         $this->assertNotEquals(0, Song::count());
         $ids = Song::select('id')->get()->pluck('id')->all();

tests/Feature/TestCase.php

@@ -21,7 +21,7 @@ abstract class TestCase extends BaseTestCase
     /** @var JWTAuth */
     private $auth;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
@@ -86,7 +86,7 @@ abstract class TestCase extends BaseTestCase
         return $this->auth->fromUser($user ?: factory(User::class)->create());
     }
 
-    protected function tearDown()
+    protected function tearDown(): void
     {
         $this->addToAssertionCount(Mockery::getContainer()->mockery_getExpectationCount());
 

tests/Feature/UserTest.php

@@ -11,13 +11,13 @@ class UserTest extends TestCase
     /** @var MockInterface */
     private $hash;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->hash = $this->mockIocDependency(Hasher::class);
     }
 
-    public function testNonAdminCannotCreateUser()
+    public function testNonAdminCannotCreateUser(): void
     {
         $this->postAsUser('api/user', [
             'name' => 'Foo',
@@ -26,7 +26,7 @@ class UserTest extends TestCase
         ])->seeStatusCode(403);
     }
 
-    public function testAdminCreatesUser()
+    public function testAdminCreatesUser(): void
     {
         $this->hash
             ->shouldReceive('make')
@@ -47,7 +47,7 @@ class UserTest extends TestCase
         ]);
     }
 
-    public function testAdminUpdatesUser()
+    public function testAdminUpdatesUser(): void
     {
         /** @var User $user */
         $user = factory(User::class)->create([
@@ -76,7 +76,7 @@ class UserTest extends TestCase
         ]);
     }
 
-    public function testAdminDeletesUser()
+    public function testAdminDeletesUser(): void
     {
         $user = factory(User::class)->create();
         $admin = factory(User::class, 'admin')->create();
@@ -85,7 +85,7 @@ class UserTest extends TestCase
             ->notSeeInDatabase('users', ['id' => $user->id]);
     }
 
-    public function testSeppukuNotAllowed()
+    public function testSeppukuNotAllowed(): void
     {
         $admin = factory(User::class, 'admin')->create();
 
@@ -95,7 +95,7 @@ class UserTest extends TestCase
             ->seeInDatabase('users', ['id' => $admin->id]);
     }
 
-    public function testUpdateUserProfile()
+    public function testUpdateUserProfile(): void
     {
         $user = factory(User::class)->create();
         $this->assertNull($user->getPreference('foo'));

tests/Feature/YouTubeTest.php

@@ -13,7 +13,7 @@ class YouTubeTest extends TestCase
     /** @var MockInterface */
     private $youTubeService;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 

tests/Integration/Commands/GenerateJwtSecretCommandTest.php

@@ -17,7 +17,7 @@ class GenerateJwtSecretCommandTest extends TestCase
     /** @var GenerateJwtSecretCommand */
     private $command;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
@@ -26,7 +26,7 @@ class GenerateJwtSecretCommandTest extends TestCase
         app(Kernel::class)->registerCommand($this->command);
     }
 
-    public function testGenerateJwtSecret()
+    public function testGenerateJwtSecret(): void
     {
         config(['jwt.secret' => false]);
 
@@ -39,7 +39,7 @@ class GenerateJwtSecretCommandTest extends TestCase
         $this->artisan('koel:generate-jwt-secret');
     }
 
-    public function testNotRegenerateJwtSecret()
+    public function testNotRegenerateJwtSecret(): void
     {
         config(['jwt.secret' => '12345678901234567890123456789012']);
 

tests/Integration/Factories/StreamerFactoryTest.php

@@ -18,7 +18,7 @@ class StreamerFactoryTest extends TestCase
     /** @var StreamerFactory */
     private $streamerFactory;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->streamerFactory = app(StreamerFactory::class);

tests/Integration/Listeners/DownloadAlbumCoverTest.php

@@ -14,7 +14,7 @@ class DownloadAlbumCoverTest extends TestCase
     /** @var MediaMetadataService|MockInterface */
     private $mediaMetaDataService;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
@@ -22,7 +22,7 @@ class DownloadAlbumCoverTest extends TestCase
         PHPMockery::mock('App\Listeners', 'ini_get')->andReturn(true);
     }
 
-    public function testHandle()
+    public function testHandle(): void
     {
         $album = factory(Album::class)->make(['cover' => null]);
         $event = new AlbumInformationFetched($album, ['image' => 'https://foo.bar/baz.jpg']);

tests/Integration/Listeners/DownloadArtistImageTest.php

@@ -14,7 +14,7 @@ class DownloadArtistImageTest extends TestCase
     /** @var MediaMetadataService|MockInterface */
     private $mediaMetaDataService;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
@@ -22,7 +22,7 @@ class DownloadArtistImageTest extends TestCase
         PHPMockery::mock('App\Listeners', 'ini_get')->andReturn(true);
     }
 
-    public function testHandle()
+    public function testHandle(): void
     {
         $artist = factory(Artist::class)->make(['image' => null]);
         $event = new ArtistInformationFetched($artist, ['image' => 'https://foo.bar/baz.jpg']);

tests/Integration/Repositories/SongRepositoryTest.php

@@ -19,7 +19,7 @@ class SongRepositoryTest extends TestCase
      */
     private $songRepository;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->helperService = new HelperService();

tests/Integration/Services/FileSynchronizerTest.php

@@ -10,13 +10,13 @@ class FileSynchronizerTest extends TestCase
     /** @var FileSynchronizer */
     private $fileSynchronizer;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->fileSynchronizer = app(FileSynchronizer::class);
     }
 
-    public function testGetFileInfo()
+    public function testGetFileInfo(): void
     {
         $info = $this->fileSynchronizer->setFile(__DIR__.'/../../songs/full.mp3')->getFileInfo();
 
@@ -48,7 +48,7 @@ class FileSynchronizerTest extends TestCase
     }
 
     /** @test */
-    public function song_without_a_title_tag_has_file_name_as_the_title()
+    public function song_without_a_title_tag_has_file_name_as_the_title(): void
     {
         $this->fileSynchronizer->setFile(__DIR__.'/../../songs/blank.mp3');
         self::assertSame('blank', $this->fileSynchronizer->getFileInfo()['title']);

tests/Integration/Services/InteractionServiceTest.php

@@ -18,7 +18,7 @@ class InteractionServiceTest extends TestCase
      */
     private $interactionService;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
@@ -26,7 +26,7 @@ class InteractionServiceTest extends TestCase
     }
 
     /** @test */
-    public function it_increases_a_songs_play_count()
+    public function it_increases_a_songs_play_count(): void
     {
         /** @var Interaction $interaction */
         $interaction = factory(Interaction::class)->create();
@@ -43,7 +43,7 @@ class InteractionServiceTest extends TestCase
      *
      * @throws Exception
      */
-    public function it_toggles_like_status()
+    public function it_toggles_like_status(): void
     {
         $this->expectsEvents(SongLikeToggled::class);
 
@@ -61,7 +61,7 @@ class InteractionServiceTest extends TestCase
      *
      * @throws Exception
      */
-    public function user_can_like_multiple_songs_at_once()
+    public function user_can_like_multiple_songs_at_once(): void
     {
         $this->expectsEvents(SongLikeToggled::class);
 
@@ -81,7 +81,7 @@ class InteractionServiceTest extends TestCase
      *
      * @throws Exception
      */
-    public function user_can_unlike_multiple_songs_at_once()
+    public function user_can_unlike_multiple_songs_at_once(): void
     {
         $this->expectsEvents(SongLikeToggled::class);
 

tests/Integration/Services/MediaCacheServiceTest.php

@@ -23,7 +23,7 @@ class MediaCacheServiceTest extends TestCase
      */
     private $cache;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
@@ -31,7 +31,7 @@ class MediaCacheServiceTest extends TestCase
         $this->mediaCacheService = new MediaCacheService($this->cache);
     }
 
-    public function testGetIfCacheIsNotAvailable()
+    public function testGetIfCacheIsNotAvailable(): void
     {
         factory(Song::class, 5)->create();
 
@@ -48,7 +48,7 @@ class MediaCacheServiceTest extends TestCase
         $this->assertCount(5, $data['songs']);
     }
 
-    public function testGetIfCacheIsAvailable()
+    public function testGetIfCacheIsAvailable(): void
     {
         $this->cache->shouldReceive('rememberForever')->andReturn(['dummy']);
 
@@ -59,7 +59,7 @@ class MediaCacheServiceTest extends TestCase
         $this->assertEquals(['dummy'], $data);
     }
 
-    public function testCacheDisabled()
+    public function testCacheDisabled(): void
     {
         $this->cache->shouldReceive('rememberForever')->never();
 

tests/Integration/Services/MediaInformationServiceTest.php

@@ -25,7 +25,7 @@ class MediaInformationServiceTest extends TestCase
      */
     private $mediaInformationService;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
@@ -36,7 +36,7 @@ class MediaInformationServiceTest extends TestCase
     /**
      * @throws Exception
      */
-    public function testGetAlbumInformation()
+    public function testGetAlbumInformation(): void
     {
         $this->expectsEvents(AlbumInformationFetched::class);
 
@@ -60,7 +60,7 @@ class MediaInformationServiceTest extends TestCase
     /**
      * @throws Exception
      */
-    public function testGetArtistInformation()
+    public function testGetArtistInformation(): void
     {
         $this->expectsEvents(ArtistInformationFetched::class);
 

tests/Integration/Services/MediaMetadataServiceTest.php

@@ -14,7 +14,7 @@ class MediaMetadataServiceTest extends TestCase
     /** @var MediaMetadataService */
     private $mediaMetadataService;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->mediaMetadataService = new MediaMetadataService(app(Logger::class));

tests/Integration/Services/S3ServiceTest.php

@@ -29,7 +29,7 @@ class S3ServiceTest extends TestCase
      */
     private $s3Service;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->s3Client = Mockery::mock(S3ClientInterface::class);

tests/TestCase.php

@@ -11,13 +11,13 @@ abstract class TestCase extends BaseTestCase
 {
     use DatabaseTransactions, CreatesApplication, InteractsWithIoc;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         $this->prepareForTests();
     }
 
-    protected function tearDown()
+    protected function tearDown(): void
     {
         $this->addToAssertionCount(Mockery::getContainer()->mockery_getExpectationCount());
 

tests/Unit/ApplicationTest.php

@@ -6,14 +6,14 @@ use Tests\TestCase;
 
 class ApplicationTest extends TestCase
 {
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
         @unlink(app()->publicPath().'/public/hot');
     }
 
     /** @test */
-    public function static_urls_without_cdn_are_constructed_correctly()
+    public function static_urls_without_cdn_are_constructed_correctly(): void
     {
         // Given we are not using a CDN
         config(['koel.cdn.url' => '']);
@@ -28,7 +28,7 @@ class ApplicationTest extends TestCase
     }
 
     /** @test */
-    public function static_urls_with_cdn_are_constructed_correctly()
+    public function static_urls_with_cdn_are_constructed_correctly(): void
     {
         // Given we're using a CDN
         config(['koel.cdn.url' => 'http://cdn.tld']);
@@ -43,7 +43,7 @@ class ApplicationTest extends TestCase
     }
 
     /** @test */
-    public function application_asset_revision_urls_are_constructed_correctly_when_not_using_cdn()
+    public function application_asset_revision_urls_are_constructed_correctly_when_not_using_cdn(): void
     {
         // Given we have revisioned assets in the manifest file
         $manifestFile = __DIR__.'../../blobs/rev-manifest.json';
@@ -59,7 +59,7 @@ class ApplicationTest extends TestCase
     }
 
     /** @test */
-    public function application_asset_revision_urls_are_constructed_correctly_when_using_cdn()
+    public function application_asset_revision_urls_are_constructed_correctly_when_using_cdn(): void
     {
         // Given we have revisioned assets in the manifest file
         $manifestFile = __DIR__.'../../blobs/rev-manifest.json';