Add test + Fix comment

Author: PatrickePatate

src/Form/Eloquent/Uploads/Thumbnails/Thumbnail.php

@@ -265,7 +265,7 @@ private function resolveThumbnailPath(?int $width = null, ?int $height = null):
 
     public function __toString()
     {
-        // If thumbnail is used in a blade template without parameters, we want to return the URL directly
+        // Return URL when Thumbnail is used as a string
         return $this->make();
     }
 }

tests/Unit/Form/Eloquent/Uploads/SharpUploadModelTest.php

@@ -1,6 +1,7 @@
 <?php
 
 use Code16\Sharp\Form\Eloquent\Uploads\SharpUploadModel;
+use Code16\Sharp\Form\Eloquent\Uploads\Thumbnails\Thumbnail;
 use Code16\Sharp\Tests\Fixtures\Person;
 use Illuminate\Support\Facades\Storage;
 
@@ -43,6 +44,16 @@
         ->toBeTrue();
 });
 
+it('allows to display thumbnails with no width or height params', function () {
+    $file = createImage();
+    $upload = createSharpUploadModel($file);
+
+    expect($upload->thumbnail())
+        ->toBeInstanceOf(Thumbnail::class)
+        ->and($upload->thumbnail()->__toString())
+        ->toStartWith('/storage/thumbnails/data/-_q-90/'.basename($file));
+});
+
 it('returns null on error with a thumbnail creation', function () {
     $file = createImage();
     $upload = createSharpUploadModel($file);