fixed tests

Author: astepin

tests/Api/ContentTest.php

@@ -266,7 +266,7 @@ public function testCanHandleHttpError400(int $errorCode, string $class): void
         $api->get(1);
     }
 
-    public function exceptionErrorCodes(): array
+    public static function exceptionErrorCodes(): array
     {
         return [
             400 => [400, HttpClientException::class],

tests/Entity/ContentTest.php

@@ -32,7 +32,6 @@ public function testGetSpace(): void
      */
     public function testSetSpace(): void
     {
-        self::assertClassHasAttribute('space', AbstractContent::class);
         $confluencePage = new ContentPage();
         $confluencePage->setSpace('TEST');
         static::assertSame('TEST', $confluencePage->getSpace());
@@ -43,10 +42,9 @@ public function testSetSpace(): void
      */
     public function testSetId(): void
     {
-        self::assertClassHasAttribute('id', AbstractContent::class);
         $confluencePage = new ContentPage();
         $confluencePage->setId(123);
         self::assertSame(123, $confluencePage->getId());
     }
 
-}
+}