Added spl tests

tests/PHP80/SplTest.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Opis\Closure\Test\PHP80;
+
+use ArrayObject, SplObjectStorage;
+use Opis\Closure\Test\SerializeTestCase;
+
+class SplTest extends SerializeTestCase
+{
+    public function testArrayObject()
+    {
+        $obj = new ArrayObject(["fn" => static fn () => "ok_key"], ArrayObject::STD_PROP_LIST);
+        $obj->fn = static fn() => "ok_prop";
+        $obj = $this->process($obj);
+        $this->assertEquals("ok_key", $obj["fn"]());
+        $this->assertEquals("ok_prop", ($obj->fn)());
+    }
+
+    public function testSplObjectStorage()
+    {
+        $f = static fn () => "ok";
+        $obj = new SplObjectStorage();
+        $obj[$f] = $f;
+
+        $obj = $this->process($obj);
+
+        $closure = iterator_to_array($obj)[0];
+
+        $this->assertEquals("ok", $closure());
+        $this->assertEquals($closure, $obj[$closure]);
+    }
+}