Upgrade to PHP 8.1 (#6711)

* Upgrade to PHP 8.1
As discussed in https://github.com/FreshRSS/FreshRSS/discussions/5474

https://www.php.net/releases/8.0/en.php
https://www.php.net/releases/8.1/en.php

Upgrade to available native type declarations
https://php.net/language.types.declarations

Upgrade to https://phpunit.de/announcements/phpunit-10.html which requires PHP 8.1+ (good timing, as version 9 was not maintained anymore)

Upgrade `:oldest` Docker dev image to oldest Alpine version supporting PHP 8.1: Alpine 3.16, which includes PHP 8.1.22.

* Include 6736
https://github.com/FreshRSS/FreshRSS/pull/6736

1 files changed, 6 insertions, 6 deletions

diff --git a/tests/app/Models/CategoryTest.php b/tests/app/Models/CategoryTest.php
index c9e88a32d..f9aa1a280 100644
--- a/tests/app/Models/CategoryTest.php
+++ b/tests/app/Models/CategoryTest.php
@@ -1,24 +1,24 @@
 <?php
 declare(strict_types=1);
 
+use PHPUnit\Framework\Attributes\DataProvider;
+
 class CategoryTest extends PHPUnit\Framework\TestCase {
 
-	public function test__construct_whenNoParameters_createsObjectWithDefaultValues(): void {
+	public static function test__construct_whenNoParameters_createsObjectWithDefaultValues(): void {
 		$category = new FreshRSS_Category();
 		self::assertEquals(0, $category->id());
 		self::assertEquals('', $category->name());
 	}
 
-	/**
-	 * @dataProvider provideValidNames
-	 */
-	public function test_name_whenValidValue_storesModifiedValue(string $input, string $expected): void {
+	#[DataProvider('provideValidNames')]
+	public static function test_name_whenValidValue_storesModifiedValue(string $input, string $expected): void {
 		$category = new FreshRSS_Category($input);
 		self::assertEquals($expected, $category->name());
 	}
 
 	/** @return array<array{string,string}> */
-	public function provideValidNames(): array {
+	public static function provideValidNames(): array {
 		return [
 			['', ''],
 			['this string does not need trimming', 'this string does not need trimming'],