Fix nullable by type(3.1) and add open api 3.1 to the testing

Author: =

src/Schema/Keywords/Nullable.php

@@ -17,8 +17,16 @@ class Nullable extends BaseKeyword
      */
     public function validate($data, bool $nullable): void
     {
-        if (! $nullable && ($data === null)) {
+        if (! $nullable && ($data === null) && !$this->nullableByType()) {
             throw KeywordMismatch::fromKeyword('nullable', $data, 'Value cannot be null');
         }
     }
+
+    /**
+     * @return bool
+     */
+    public function nullableByType(): bool
+    {
+        return !is_string($this->parentSchema->type) && in_array('null', $this->parentSchema->type);
+    }
 }

tests/PSR7/BaseValidatorTest.php

@@ -28,7 +28,7 @@ protected function makeGoodResponse(string $path, string $method): ResponseInter
     {
         switch ($method . ' ' . $path) {
             case 'get /path1':
-                $body = ['propA' => 1];
+                $body = ['propA' => 1, 'propD' => [1, 'string', null]];
 
                 return (new Response())
                     ->withHeader('Content-Type', 'application/json')

tests/stubs/api.yaml

@@ -1,4 +1,4 @@
-openapi: 3.0.2
+openapi: 3.1.0
 info:
   title: Weather API
   version: 0.0.1

tests/stubs/schemas.yaml

@@ -13,6 +13,13 @@ components:
           type: array
           items:
             type: string
+        propD:
+          type: array
+          items:
+            type:
+              - string
+              - integer
+              - 'null'
       required:
         - propA
         - propB