Implement this issue for all child class of SpecBaseObject - WIP - Only failing test is ReaderTest::testReadYamlWithAnchors

Author: SOHELAHMED7

src/SpecBaseObject.php

@@ -234,7 +234,12 @@ public function validate(): bool
         }
         $this->_recursingValidate = true;
         $valid = true;
-        foreach ($this->_properties as $v) {
+        $allowedFields = array_keys($this->attributes());
+        foreach ($this->_properties as $k => $v) {
+            if ($allowedFields && !in_array($k, $allowedFields, true) && substr($k, 0, 2) !== 'x-' ) {
+                $valid = false;
+                $this->addError('Invalid field: "' . $k . '"');
+            }
             if ($v instanceof SpecObjectInterface) {
                 if (!$v->validate()) {
                     $valid = false;

src/spec/OpenApi.php

@@ -78,12 +78,6 @@ public function performValidation()
             $this->addError('Unsupported openapi version: ' . $this->openapi);
         }
 
-        $providedFields = array_keys($this->getRawSpecData());
-        $allowedFields = array_keys($this->attributes());
-        foreach ($providedFields as $field) {
-            if (!in_array($field, $allowedFields, true)) {
-                $this->addError('Invalid top level field: "' . $field . '". More information can be obtained at https://spec.openapis.org/oas/v3.0.3.html#fixed-fields');
-            }
-        }
+
     }
 }