<?php

use Symfony\Component\Finder\Finder;
use PHPUnit\Framework\TestCase;

/**
 * The class to test
 */
class Foo
{
    public function configureFinder(Finder $finder)
    {
        return $finder->files()
            ->useBestAdapter()
            ->sortByName();
    }
}

class FluidTest extends TestCase
{
    public function testConfigureFinder() : void
    {
        // mock of Finder and its fluid method usage
        $finder = Mockery::mock(Finder::CLASS);
        $finder->shouldReceive('files->useBestAdapter->sortByName')
            ->andReturn($finder);
        
        $foo = new Foo();
        $actual = $foo->configureFinder($finder);
        
        // do your assertions for your test
        $this->assertInstanceOf(Finder::CLASS, $actual);
    }
    
    protected function tearDown() : void
    {
        Mockery::close();
    }
}

Time: 00:00.012, Memory: 18.00 MB

OK (1 test, 0 assertions)

• Integrationtests in PHPUnit with mock proxies
• Mocking a static method with Mockery
• Create your custom PHPUnit Constraint

PHP 8.2, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8