Verify timezone support for description files

Author: thekid

src/test/php/de/thekid/dialog/unittest/DescriptionsTest.php

@@ -4,6 +4,7 @@
 use io\streams\MemoryInputStream;
 use lang\FormatException;
 use test\{Assert, Expect, Test, Values};
+use util\{Date, TimeZone};
 
 class DescriptionsTest {
 
@@ -36,4 +37,16 @@ public function parse_content() {
       $this->parse("---\ntitle: Test\nlocation: KA\n---\nContent")->content
     );
   }
+
+  #[Test, Values([
+    ['', TimeZone::getLocal()],
+    ['Europe/Berlin', TimeZone::getByName('Europe/Berlin')],
+    ['Asia/Muscat', TimeZone::getByName('Asia/Muscat')],
+  ])]
+  public function resolve_timezone($tz, $resolved) {
+    Assert::equals(
+      ['date' => new Date('2024-12-29 13:19:00', $resolved)],
+      $this->parse("---\ndate: 2024-12-29 13:19:00 {$tz}\n---\nContent")->meta
+    );
+  }
 }