BE sync

backend/url-shortener/tests/run_tests.php

@@ -0,0 +1,35 @@
+<?php
+declare(strict_types=1);
+
+require_once dirname(__DIR__) . '/src/UrlNormalizer.php';
+require_once dirname(__DIR__) . '/src/SlugGenerator.php';
+
+function assert_true(bool $cond, string $msg): void {
+    if (!$cond) {
+        fwrite(STDERR, "FAIL: $msg\n");
+        exit(1);
+    }
+}
+
+$n = UrlNormalizer::normalize('HTTPS://Example.COM/path?q=1#frag');
+assert_true($n === 'https://example.com/path?q=1#frag', 'normalize host case');
+
+$h = UrlNormalizer::originHash($n);
+assert_true(strlen($h) === 64, 'origin hash length');
+
+try {
+    UrlNormalizer::normalize('http://127.0.0.1/');
+    fwrite(STDERR, "FAIL: should block localhost\n");
+    exit(1);
+} catch (InvalidArgumentException $e) {
+    // ok
+}
+
+$slug = SlugGenerator::baseSlug(42, 'https://example.com/a');
+assert_true(strlen($slug) === 12, 'slug length 12');
+assert_true(ctype_xdigit($slug), 'slug hex');
+
+$candidates = SlugGenerator::candidates(1, 'https://a.test/');
+assert_true(count($candidates) >= 2, 'collision candidates');
+
+echo "OK url-shortener php tests\n";