Merge branch '6.4' into 7.0

* 6.4:
  Use typed properties in tests as much as possible

Author: nicolas-grekas

Tests/MailerTest.php

@@ -42,8 +42,8 @@ public function testSendingRawMessages()
     public function testSendMessageToBus()
     {
         $bus = new class() implements MessageBusInterface {
-            public $messages = [];
-            public $stamps = [];
+            public array $messages = [];
+            public array $stamps = [];
 
             public function dispatch($message, array $stamps = []): Envelope
             {

Tests/Transport/NativeTransportFactoryTest.php

@@ -22,7 +22,7 @@
 
 final class NativeTransportFactoryTest extends TestCase
 {
-    public static $fakeConfiguration = [];
+    public static array $fakeConfiguration = [];
 
     public static function setUpBeforeClass(): void
     {

Tests/Transport/SendmailTransportTest.php

@@ -21,10 +21,7 @@ class SendmailTransportTest extends TestCase
 {
     private const FAKE_SENDMAIL = __DIR__.'/Fixtures/fake-sendmail.php -t';
 
-    /**
-     * @var string
-     */
-    private $argsPath;
+    private string $argsPath;
 
     protected function setUp(): void
     {

Tests/TransportTest.php

@@ -102,7 +102,7 @@ public static function fromWrongStringProvider(): iterable
 
 class DummyTransport implements Transport\TransportInterface
 {
-    private $host;
+    private string $host;
 
     public function __construct(string $host)
     {