Added ability to deserialize backed enum from backed enum

Author: Fa-BRAIK

src/Serializers/BackedEnumSerializer.php

@@ -45,7 +45,11 @@ protected function deserializeItem(mixed $item, PropertyContext $property): ?Bac
                 : throw new DeserializeException('Property is not nullable');
         }
 
-        if (!is_string($item) && !is_integer($item)) {
+        if (
+            !is_string($item)
+            && !is_integer($item)
+            && !$item instanceof BackedEnum
+        ) {
             throw new DeserializeException('Value is not a string or integer');
         }
 
@@ -58,6 +62,14 @@ protected function deserializeItem(mixed $item, PropertyContext $property): ?Bac
                     continue;
                 }
 
+                if ($item instanceof BackedEnum) {
+                    if ($item instanceof ($typeContext->reflection->getName())) {
+                        return $item;
+                    } else {
+                        continue;
+                    }
+                }
+
                 $enumValue = call_user_func(
                     // @phpstan-ignore-next-line
                     [$typeContext->reflection->getName(), 'tryFrom'],

tests/Unit/Serializers/BackedEnumSerializerTest.php

@@ -106,4 +106,25 @@ public function will_resolve_null_if_property_is_nullable(): void
             $backedEnumSerializer->deserialize(PropertyContext::getInstance($property), $serializedData)
         );
     }
+
+    /**
+     * @throws Throwable
+     */
+    #[Test]
+    public function will_resolve_backed_enum_from_backed_enum(): void
+    {
+        $yesNoNullableData = new YesOrNoNullableData(null);
+
+        $reflectionClass = new ReflectionClass($yesNoNullableData);
+        $property = $reflectionClass->getProperty('yesNo');
+
+        $backedEnumSerializer = new BackedEnumSerializer();
+
+        $serializedData = ['yesNo' => YesNoBackedEnum::YES];
+
+        self::assertEquals(
+            YesNoBackedEnum::YES,
+            $backedEnumSerializer->deserialize(PropertyContext::getInstance($property), $serializedData)
+        );
+    }
 }