Add publish_date and expiry_date support

devel/tests/helpers/is_visible_dates.phpt

@@ -0,0 +1,60 @@
+--TEST--
+isVisible: enforces publish_date and expiry_date boundaries
+--FILE--
+<?php
+require '/var/www/app/hooks.php';
+require '/var/www/app/context.php';
+require '/var/www/app/helpers.php';
+
+$today = gmdate('Y-m-d');
+
+// Helper to create tomorrow/yesterday dates
+$tomorrow = gmdate('Y-m-d', strtotime('+1 day'));
+$yesterday = gmdate('Y-m-d', strtotime('-1 day'));
+
+// Future publish_date = hidden
+echo isVisible(['publish_date' => $tomorrow]) ? "visible\n" : "hidden\n";
+
+// Past publish_date = visible
+echo isVisible(['publish_date' => $yesterday]) ? "visible\n" : "hidden\n";
+
+// Publish date = today = visible (inclusive)
+echo isVisible(['publish_date' => $today]) ? "visible\n" : "hidden\n";
+
+// Past expiry_date = hidden
+echo isVisible(['expiry_date' => $yesterday]) ? "visible\n" : "hidden\n";
+
+// Future expiry_date = visible
+echo isVisible(['expiry_date' => $tomorrow]) ? "visible\n" : "hidden\n";
+
+// Expiry date = today = visible (inclusive)
+echo isVisible(['expiry_date' => $today]) ? "visible\n" : "hidden\n";
+
+// Both set, today in range = visible
+echo isVisible([
+    'publish_date' => $yesterday,
+    'expiry_date'  => $tomorrow,
+]) ? "visible\n" : "hidden\n";
+
+// Both set, today before range = hidden
+echo isVisible([
+    'publish_date' => $tomorrow,
+    'expiry_date'  => gmdate('Y-m-d', strtotime('+2 days')),
+]) ? "visible\n" : "hidden\n";
+
+// Both set, today after range = hidden
+echo isVisible([
+    'publish_date' => gmdate('Y-m-d', strtotime('-3 days')),
+    'expiry_date'  => $yesterday,
+]) ? "visible\n" : "hidden\n";
+?>
+--EXPECT--
+hidden
+visible
+visible
+hidden
+visible
+visible
+visible
+hidden
+hidden