📦 Make tests a bit more restrictive and safe

Author: andrew-demb

tests/FunctionalTest.php

@@ -374,6 +374,7 @@ public function testNoLoginNoSessionQuery(): void
 
         $result = json_decode($response->getContent(), true);
 
+        $this->assertIsArray($result);
         $this->assertArrayHasKey('errors', $result);
         $this->assertSame('Cannot query field "login" on type "Mutation".', $result['errors'][0]['message']);
     }
@@ -508,8 +509,11 @@ public function testWithIntrospection(): void
         $response = $kernel->handle($request);
 
         $result = json_decode($response->getContent(), true);
+        $this->assertIsArray($result);
+        $this->assertArrayHasKey('data', $result);
         $data = $result['data'];
 
+        $this->assertIsArray($result);
         $this->assertArrayHasKey('__schema', $data);
     }