Add support for Enum as selected item in FormSelect

src/Components/FormSelect.php

@@ -54,6 +54,14 @@ public function __construct(
             if ($this->selectedKey instanceof Arrayable) {
                 $this->selectedKey = $this->selectedKey->toArray();
             }
+
+            if ($this->selectedKey instanceof \BackedEnum) {
+                $this->selectedKey = $this->selectedKey->value;
+            }
+
+            if ($this->selectedKey instanceof \UnitEnum) {
+                $this->selectedKey = $this->selectedKey->name;
+            }
         }
 
         $this->multiple   = $multiple;

tests/Feature/SelectTest.php

@@ -4,6 +4,24 @@
 
 use ProtoneMedia\LaravelFormComponents\Tests\TestCase;
 
+enum TestEnum: int
+{
+    case a = 1;
+    case b = 2;
+    case c = 3;
+
+    public static function toOptions(): array
+    {
+        $formattedCases = [];
+
+        foreach (self::cases() as $option) {
+            $formattedCases[$option->value] = $option->name;
+        }
+
+        return $formattedCases;
+    }
+}
+
 class SelectTest extends TestCase
 {
     /** @test */
@@ -27,4 +45,27 @@ public function it_can_render_a_placeholder()
             ->seeElement('option[value="a"]')
             ->seeElement('option[value="b"]');
     }
+
+    /** @test */
+    public function it_can_render_a_selected_option()
+    {
+        $this->registerTestRoute('select-selected');
+        $this->session(['_old_input' => ['select' => 'a']]);
+
+        $this->visit('/select-selected')
+            ->seeElement('option[value="a"][selected="selected"]')
+            ->seeElement('option[value="b"]');
+    }
+
+    /** @test */
+    public function it_can_render_a_selected_enum_option()
+    {
+        $this->registerTestRoute('select-selected-enum');
+        $this->session(['_old_input' => ['select' => TestEnum::a]]);
+
+        $this->visit('/select-selected-enum')
+            ->seeElement('option[value="1"][selected="selected"]')
+            ->seeElement('option[value="2"]')
+            ->seeElement('option[value="3"]');
+    }
 }

tests/Feature/views/select-selected-enum.blade.php

@@ -0,0 +1,5 @@
+<x-form>
+    <x-form-select name="select" :options="\ProtoneMedia\LaravelFormComponents\Tests\Feature\TestEnum::toOptions()"></x-form-select>
+
+    <x-form-submit />
+</x-form>

tests/Feature/views/select-selected.blade.php

@@ -0,0 +1,5 @@
+<x-form>
+    <x-form-select name="select" :options="['a' => 'a', 'b' => 'b']"></x-form-select>
+
+    <x-form-submit />
+</x-form>