Allow tests to run in PHP 8.3

Author: mbonneau

.github/workflows/ci.yml

@@ -15,6 +15,7 @@ jobs:
           - ubuntu-20.04
           - windows-2019
         php:
+          - 8.3
           - 8.2
           - 8.1
           - 8.0

src/Testing/Recorded.php

@@ -6,6 +6,10 @@
 
 class Recorded
 {
+    private $time;
+    private $value;
+    private $comparer;
+
     public function __construct(int $time, $value, callable $comparer = null)
     {
         $this->time     = $time;

test/Rx/Scheduler/ImmediateSchedulerTest.php

@@ -24,7 +24,6 @@ public function now_returns_the_time()
     public function non_zero_delay_throws()
     {
         $this->expectException(\Exception::class);
-        $this->expectDeprecationMessage('ImmediateScheduler does not support a non-zero delay.');
         $scheduler = new ImmediateScheduler();
 
         $scheduler->schedule(function () {

test/Rx/SchedulerTest.php

@@ -16,7 +16,7 @@ private function resetStaticScheduler()
         foreach (['default', 'async', 'immediate', 'defaultFactory', 'asyncFactory'] as $propertyName) {
             $prop = $ref->getProperty($propertyName);
             $prop->setAccessible(true);
-            $prop->setValue(null);
+            $ref->setStaticPropertyValue($propertyName, null);
             $prop->setAccessible(false);
         }
     }