test(wpmc S2): setup PHPUnit + Brain Monkey + Mockery

tests/TestCase.php

@@ -0,0 +1,24 @@
+<?php
+declare(strict_types=1);
+
+namespace WPMultiCity\Tests;
+
+use Brain\Monkey;
+use Mockery;
+use PHPUnit\Framework\TestCase as BaseTestCase;
+
+abstract class TestCase extends BaseTestCase
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+        Monkey\setUp();
+    }
+
+    protected function tearDown(): void
+    {
+        Monkey\tearDown();
+        Mockery::close();
+        parent::tearDown();
+    }
+}

tests/bootstrap.php

@@ -0,0 +1,11 @@
+<?php
+declare(strict_types=1);
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+if (!defined('ABSPATH')) {
+    define('ABSPATH', __DIR__ . '/');
+}
+
+require_once __DIR__ . '/../includes/class-plugin.php';
+\WPMultiCity\Plugin::register_autoloader();