<?php

use PHPUnit\Framework\TestCase;

class FixedOrderTest extends TestCase
{
    public function testDoWork() : void
    {
        $manufacturer = new ToyManufacturer();
        
        $toyProcess = $this->createMock(ToyProcess::CLASS);
        $toyProcess->expects($this->at(0))
            ->method('buildToy')
            ->willReturn('ElePHPant');
        
        $toyProcess->expects($this->at(1))
            ->method('paintToy')
            ->willReturn('BlueElePHPant');
        
        $toyProcess->expects($this->at(2))
            ->method('wrapToy')
            ->willReturn('WrappedBlueElePHPant');
        
        $qualityCheck = $this->createMock(ToyQualityControl::CLASS);
        $qualityCheck->expects($this->atLeastOnce())
            ->method('isOkay')
            ->willReturn(true);
        
        $present = $manufacturer->doWork($toyProcess, $qualityCheck);
        
        $this->assertEquals('WrappedBlueElePHPant', $present);
    }
}

class ToyManufacturer
{
    public function doWork(ToyProcess $toyProcess, ToyQualityControl $qualityCheck)
    {
        $toy = $toyProcess->buildToy();
        $coloredToy = $toyProcess->paintToy($toy);
        
        if (!$qualityCheck->isOkay($coloredToy)) {
            throw new Exception('Bad quality Toy');
        }
        
        return $toyProcess->wrapToy($coloredToy);
    }
}

interface ToyProcess
{
    public function buildToy();
    
    public function paintToy($toy);
    
    public function wrapToy($toy);
}

interface ToyQualityControl
{
    public function isOkay($toy);
}


Time: 00:00.008, Memory: 18.00 MB

There was 1 warning:

1) FixedOrderTest::testDoWork
The at() matcher has been deprecated. It will be removed in PHPUnit 10. Please refactor your test to not rely on the order in which methods are invoked.

PhpunitExec.php:21

WARNINGS!
Tests: 1, Assertions: 0, Warnings: 1.

• Testing collections in PHPUnit
• Test your Traits in PHPUnit
• Testify is an awesome micro testing framework

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