Add the Chronological

_test/ChronologicalDayTemplateTest.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace dokuwiki\plugin\luxtools\test;
+
+use dokuwiki\plugin\luxtools\ChronologicalDayTemplate;
+use DokuWikiTest;
+
+require_once(__DIR__ . '/../autoload.php');
+
+/**
+ * Tests for German day template generation.
+ *
+ * @group plugin_luxtools
+ * @group plugins
+ */
+class ChronologicalDayTemplateTest extends DokuWikiTest
+{
+    public function testBuildForDayIdGermanHeading(): void
+    {
+        $tpl = ChronologicalDayTemplate::buildForDayId('chronological:2026:02:13');
+        if (!is_string($tpl) || $tpl === '') {
+            throw new \Exception('Expected non-empty day template');
+        }
+
+        if (strpos($tpl, '====== Freitag, 13. Februar 2026 ======') === false) {
+            throw new \Exception('Expected German formatted heading not found');
+        }
+    }
+
+    public function testBuildForDayIdRejectsInvalid(): void
+    {
+        $tpl = ChronologicalDayTemplate::buildForDayId('chronological:2026:02');
+        if ($tpl !== null) {
+            throw new \Exception('Expected null for non-day ID');
+        }
+    }
+}