Draft: Wrong error message when using an undefined property for a schema object property definition

tests/IssueTest.php

@@ -0,0 +1,21 @@
+<?php
+
+class IssueTest extends \PHPUnit\Framework\TestCase
+{
+    // https://github.com/cebe/php-openapi/issues/165
+    public function test165WrongErrorMessageWhenUsingAnUndefinedPropertyForASchemaObjectPropertyDefinition()
+    {
+//        $openapi = Reader::readFromYamlFile(__DIR__.'/data/issue/165/spec.yml');
+//        $openapi->performValidation();
+//        $this->assertTrue($openapi->getErrors());
+//        $this->assertTrue($openapi->validate());
+
+        // exec('echo hi', $output, $code);
+        exec('bin/php-openapi validate tests/data/issue/165/spec.yml 2>&1', $output, $code);
+        $this->assertSame($output, [
+            'OpenAPI v3.0 schema violations:',
+            '- [components.schemas.answer.properties.id] The property summary is not defined and the definition does not allow additional properties',
+        ]);
+        // $this->assertSame(0, $code);
+    }
+}

tests/data/issue/165/spec.yml

@@ -0,0 +1,19 @@
+openapi: 3.0.3
+info:
+  title: Test
+  version: 0.1.0
+paths:
+  /test:
+    get:
+      responses:
+        "200":
+          description: Test
+
+components:
+  schemas:
+    answer:
+      type: object
+      properties:
+        id:
+          type: integer
+          summary: Unique answer ID