<?php

use PHPUnit\Framework\TestCase;

class ConsecutiveTest extends TestCase
{
    public function testCounterCall() : void
    {
        $counter = $this->createMock(Counter::CLASS);
        $counter->expects($this->atLeastOnce())
            ->method('increment')
            ->willReturnOnConsecutiveCalls(1, 2, 3);
        
        $this->assertEquals(1, $counter->increment());
        $this->assertEquals(2, $counter->increment());
        $this->assertEquals(3, $counter->increment());
        // Any further invocation returns null
        $this->assertEquals(null, $counter->increment());
    }
}

class Counter
{
    private $count = 0;
    
    public function increment()
    {
        return ++$this->count;
    }
}


Time: 00:00.007, Memory: 18.00 MB

OK (1 test, 0 assertions)

• PHPUnit test have to check every case
• Handling fluid interfaces with a Mockery mock objects
• Should a PHPUnit mock act like original object? How PHPUnit says "Your code suck"

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