test: add database test case, router and CSRF tests

tests/DatabaseTestCase.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace Bazaar\Tests;
+
+use Bazaar\Core\Database;
+use Bazaar\Core\Migrator;
+use Bazaar\Repositories\CategoryRepository;
+use Bazaar\Repositories\ProductRepository;
+use PDO;
+use PHPUnit\Framework\TestCase;
+
+abstract class DatabaseTestCase extends TestCase
+{
+    protected Database $db;
+
+    protected function setUp(): void
+    {
+        $pdo = new PDO('sqlite::memory:', null, null, [
+            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+            PDO::ATTR_EMULATE_PREPARES => false,
+        ]);
+        $pdo->exec('PRAGMA foreign_keys = ON');
+
+        $this->db = Database::fromPdo($pdo);
+        Database::swap($this->db);
+        (new Migrator($this->db, dirname(__DIR__) . '/database/migrations'))->run();
+
+        $_SESSION = [];
+    }
+
+    protected function seedProduct(string $name, int $priceCents, int $stock): int
+    {
+        $categories = new CategoryRepository($this->db);
+        $products = new ProductRepository($this->db);
+        $categoryId = $categories->create($name . ' cat', slugify($name . ' cat'), '');
+        return $products->create([
+            'categoryId' => $categoryId,
+            'name' => $name,
+            'slug' => slugify($name),
+            'description' => '',
+            'priceCents' => $priceCents,
+            'stockQuantity' => $stock,
+            'imageUrl' => '',
+            'isActive' => true,
+        ]);
+    }
+}