phpunit test must be installed in www/ folder

Because www folder is source base, if phpunit is installed outside it
cannot find the classes

vendor/sebastian/diff/src/Line.php

@@ -1,45 +0,0 @@
-<?php declare(strict_types=1);
-/*
- * This file is part of sebastian/diff.
- *
- * (c) Sebastian Bergmann <sebastian@phpunit.de>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-namespace SebastianBergmann\Diff;
-
-final class Line
-{
-    public const ADDED     = 1;
-
-    public const REMOVED   = 2;
-
-    public const UNCHANGED = 3;
-
-    /**
-     * @var int
-     */
-    private $type;
-
-    /**
-     * @var string
-     */
-    private $content;
-
-    public function __construct(int $type = self::UNCHANGED, string $content = '')
-    {
-        $this->type    = $type;
-        $this->content = $content;
-    }
-
-    public function getContent(): string
-    {
-        return $this->content;
-    }
-
-    public function getType(): int
-    {
-        return $this->type;
-    }
-}