test(extend): 补充测试用例

composer.json

@@ -63,7 +63,10 @@
   "config": {
     "optimize-autoloader": true,
     "sort-packages": true,
-    "secure-http": false
+    "secure-http": false,
+    "allow-plugins": {
+      "pestphp/pest-plugin": true
+    }
   },
   "autoload": {
     "psr-4": {

src/Service/ExtendService.php

@@ -19,7 +19,7 @@ class ExtendService
         ?ServerRequestInterface $request,
         ?array $params = null
     ): array {
-        $params ??= $request->getQueryParams();
+        $params ??= $request?->getQueryParams();
         $extends = $params['extends'] ?? null;
         if (!empty($extends)) {
             $extends = explode(',', $extends);

tests/Unit/ExtendServiceTest.php

@@ -13,6 +13,15 @@ use Singularity\HDK\Core\Service\ExtendService;
 
 $service = new ExtendService();
 
+it('asserts no parameters can be parsed.', function () use ($service) {
+    $service->parse(
+        null,
+        null
+    );
+    $result = $service->getExtends();
+    expect($result)->toBeArray()->toHaveCount(0)->toBe([]);
+})->only();
+
 it('asserts query parameters can be parsed.', function () use ($service) {
     $result = $service->parse(
         null,