feat: Add support for default values on metadata properties (#23)

refactor: Remove comment

tests/Pest.php

@@ -29,6 +29,17 @@ class Instructions extends MetaProperty
     }
 }
 
+#[Attribute]
+class IsActive extends MetaProperty
+{
+    public static string $method = 'isActive';
+
+    public static function defaultValue(): mixed
+    {
+        return false;
+    }
+}
+
 /**
  * @method string description()
  * @method string color()
@@ -62,6 +73,25 @@ enum Role
     case GUEST;
 }
 
+#[Meta([IsActive::class])]
+enum ReferenceType: int
+{
+    use InvokableCases, Options, Names, Values, From, Metadata, Comparable;
+
+    #[IsActive(true)]
+    case ACTIVE_TYPE = 1;
+
+    case INACTIVE_TYPE = 0;
+}
+    
+#[Meta([Desc::class])]
+enum RoleWithoutAttribute
+{
+    use InvokableCases, Options, Names, Values, From, Metadata, Comparable;
+
+    case ADMIN;
+}
+
 enum MultiWordSnakeCaseEnum
 {
     use Options;

tests/Pest/MetadataTest.php

@@ -60,4 +60,12 @@ test('fromMeta throws an exception when the enum cannot be instantiated', functi
 
 test('tryFromMeta silently fails when the enum cannot be instantiated')
     ->expect(Role::tryFromMeta(Color::make('foobar')))
-    ->toBe(null);
+    ->toBeNull();
+
+test('metadata properties return null if missing on the case')
+    ->expect(RoleWithoutAttribute::ADMIN->desc())
+    ->toBeNull();
+
+test('metadata can have default values')
+    ->expect(ReferenceType::INACTIVE_TYPE->isActive())
+    ->toBeFalse();