php-parser/test/PhpParser/AutoloaderTest.php

<?php

namespace PhpParser;

/* The autoloader is already active at this point, so we only check effects here. */

use PHPUnit\Framework\TestCase;

class AutoloaderTest extends TestCase
{
    public function testClassExists() {
        $this->assertTrue(class_exists('PhpParser\NodeVisitorAbstract'));
        $this->assertFalse(class_exists('PHPParser_NodeVisitor_NameResolver'));

        $this->assertFalse(class_exists('PhpParser\FooBar'));
        $this->assertFalse(class_exists('PHPParser_FooBar'));
    }
}