Add Types31 test

tests/Fixtures/Scratch/Types31.php

@@ -0,0 +1,33 @@
+<?php declare(strict_types=1);
+
+/**
+ * @license Apache 2.0
+ */
+
+namespace OpenApi\Tests\Fixtures\Scratch;
+
+use OpenApi\Attributes as OAT;
+
+#[OAT\Schema]
+class Types31
+{
+    #[OAT\Property(type: ['string', 'integer'])]
+    public string|int $stringInteger = '';
+
+    #[OAT\Property(type: ['string', 'number', 'integer', 'boolean', 'array', 'object', 'null'])]
+    public mixed $massiveTypes = '';
+}
+
+#[OAT\OpenApi(openapi: '3.1.0')]
+#[OAT\Info(
+    title: 'List of types',
+    version: '1.0'
+)]
+#[OAT\Get(
+    path: '/api/endpoint',
+    description: 'An endpoint',
+    responses: [new OAT\Response(response: 200, description: 'OK')]
+)]
+class Types31Endpoint
+{
+}

tests/Fixtures/Scratch/Types31.yaml

@@ -0,0 +1,30 @@
+openapi: 3.1.0
+info:
+  title: 'List of types'
+  version: '1.0'
+paths:
+  /api/endpoint:
+    get:
+      description: 'An endpoint'
+      operationId: 20a99cdde4e09b297c7555321c7cdb6f
+      responses:
+        '200':
+          description: OK
+components:
+  schemas:
+    Types31:
+      properties:
+        stringInteger:
+          type:
+            - string
+            - integer
+        massiveTypes:
+          type:
+            - string
+            - number
+            - integer
+            - boolean
+            - array
+            - object
+            - 'null'
+      type: object