From a5082da0da0f2a728884c31dbac0b93599154661 Mon Sep 17 00:00:00 2001
From: Vladimir Bryzgalov <vladimir.bryzgalov@gmail.com>
Date: Tue, 21 Apr 2026 21:05:45 +0500
Subject: [PATCH] test(update-checker): invariants for vendored PUC loader and
 factory class

---
 tests/UpdateCheckerIntegrationTest.php | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 tests/UpdateCheckerIntegrationTest.php

diff --git a/tests/UpdateCheckerIntegrationTest.php b/tests/UpdateCheckerIntegrationTest.php
new file mode 100644
index 0000000..dc09e5c
--- /dev/null
+++ b/tests/UpdateCheckerIntegrationTest.php
@@ -0,0 +1,24 @@
+<?php
+declare(strict_types=1);
+
+namespace Cf7stg\Tests;
+
+final class UpdateCheckerIntegrationTest extends Cf7stgTestCase
+{
+    private const PLUGIN_ROOT = __DIR__ . '/..';
+    private const PUC_LOADER = self::PLUGIN_ROOT . '/includes/lib/plugin-update-checker/plugin-update-checker.php';
+
+    public function test_puc_loader_file_exists(): void
+    {
+        self::assertFileExists(self::PUC_LOADER);
+    }
+
+    public function test_puc_factory_class_loadable_after_require(): void
+    {
+        require_once self::PUC_LOADER;
+        self::assertTrue(
+            class_exists('YahnisElsts\\PluginUpdateChecker\\v5\\PucFactory'),
+            'PucFactory must be loadable after requiring the PUC loader'
+        );
+    }
+}