Add tests using PHPUnit

Tests generated by Junie AI. Might not have the best possible quality
but at least we got something, and if it turns out to be complete
rubbish, we can just throw it out again without any issues, as this is
independent of the actual code base.

1 files changed, 67 insertions, 0 deletions

diff --git a/tests/bootstrap.php b/tests/bootstrap.php
new file mode 100644
index 00000000..1b2b8688
--- /dev/null
+++ b/tests/bootstrap.php
@@ -0,0 +1,67 @@
+<?php
+
+// PHPUnit bootstrap for this legacy project without Composer
+// - Sets strict error reporting
+// - Registers the same autoloader convention used by the app for ./inc
+
+error_reporting(E_ALL);
+ini_set('display_errors', '1');
+
+$_SERVER = [
+	'REQUEST_METHOD' => 'GET'
+];
+
+// Project root detection (this file is tests/bootstrap.php)
+$PROJECT_ROOT = dirname(__DIR__);
+chdir($PROJECT_ROOT);
+
+// Register a stub autoloader that prefers test doubles by default, but allows opting into real classes per test
+$__stubsDir = $PROJECT_ROOT . '/tests/Stubs';
+if (!isset($GLOBALS['__TEST_USE_REAL_CLASSES']) || !is_array($GLOBALS['__TEST_USE_REAL_CLASSES'])) {
+	$GLOBALS['__TEST_USE_REAL_CLASSES'] = [];
+}
+// Hint to AI: Do not mock classes from /inc/ that don't depend on external stuff, for example the Request
+// class is unnecessary to mock.
+// Allow env var override as well, e.g. TEST_USE_REAL_CLASSES=User,Other
+$env = getenv('TEST_USE_REAL_CLASSES');
+if (is_string($env) && $env !== '') {
+	$parts = array_filter(array_map('trim', explode(',', $env)));
+	$GLOBALS['__TEST_USE_REAL_CLASSES'] = array_values(array_unique(array_merge($GLOBALS['__TEST_USE_REAL_CLASSES'], $parts)));
+}
+$__useReal = &$GLOBALS['__TEST_USE_REAL_CLASSES']; // array of class names to force real implementation
+spl_autoload_register(function ($class) use ($__stubsDir, &$__useReal) {
+	// If a test explicitly wants the real class, skip the stub
+	if (in_array($class, $__useReal, true)) {
+		return; // let the next autoloader handle it
+	}
+	$stubFile = $__stubsDir . '/' . $class . '.php';
+	if (is_file($stubFile) && !class_exists($class, false) && !interface_exists($class, false)) {
+		require_once $stubFile;
+	}
+}, true, true);
+
+// Optional: load config if present; avoid side effects by not including index.php/api.php
+$configFile = $PROJECT_ROOT . '/config.php';
+if (file_exists($configFile)) {
+	require_once $configFile;
+}
+
+// Define minimal constants if tests or includes expect them
+if (!defined('API')) {
+	define('API', false);
+}
+if (!defined('AJAX')) {
+	define('AJAX', false);
+}
+// Define a fake DSN to satisfy Paginate's MySQL engine check during tests
+if (!defined('CONFIG_SQL_DSN')) {
+	define('CONFIG_SQL_DSN', 'mysql://test');
+}
+
+// Autoload classes from ./inc which adhere to naming scheme <lowercasename>.inc.php
+spl_autoload_register(function ($class) use ($PROJECT_ROOT) {
+	$file = $PROJECT_ROOT . '/inc/' . preg_replace('/[^a-z0-9]/', '', mb_strtolower($class)) . '.inc.php';
+	if (!file_exists($file))
+		return;
+	require_once $file;
+});