fix(extend): 修复了解析不到为空不为数组的问题

tests/Unit/ExtendServiceTest.php

@@ -9,20 +9,26 @@
 
 namespace Singularity\HDK\Test\Core\Unit;
 
-use Hyperf\Utils\ApplicationContext;
 use Singularity\HDK\Core\Service\ExtendService;
 use Singularity\HDK\Core\Service\UtilsService;
 
 /** @var ExtendService $service */
 $service = make(ExtendService::class, ['utils' => new UtilsService()]);
-it('asserts no parameters can be parsed.', function () use ($service) {
+it('asserts no parameters can be parsed.', function (ExtendService $service, $params) {
     $service->parse(
         null,
-        null
+        $params
     );
     $result = $service->getExtends();
     expect($result)->toBeArray()->toHaveCount(0)->toBe([]);
-})->only();
+})->with([
+    [$service, null],
+    [$service, ''],
+    [$service, []],
+    [$service, ['extends' => '']],
+    [$service, ['extends' => null]],
+])->only();
+
 it('asserts query parameters can be parsed.', function () use ($service) {
     $result = $service->parse(
         null,