<?php

use PHPUnit\Framework\TestCase;

class Foo
{
    public function prependAwesomeTo($str) : string
    {
        return 'Awesome' . $str;
    }
}

class ValueMapTest extends TestCase
{
    public function testPrependAwesomeTo() : void
    {
        // last value in every array is return value
        $map = [
            ['Cat', 'AwesomeCat'],
            ['Dog', 'AwesomeDog'],
            ['Bird', 'AwesomeBird'],
        ];
        
        $foo = $this->createMock('Foo');
        $foo->expects($this->atLeastOnce())
            ->method('prependAwesomeTo')
            ->will($this->returnValueMap($map));
            
        $this->assertEquals('AwesomeCat', $foo->prependAwesomeTo('Cat'));
        $this->assertEquals('AwesomeBird', $foo->prependAwesomeTo('Bird'));
        $this->assertEquals('AwesomeDog', $foo->prependAwesomeTo('Dog'));
        
    }
}

Time: 00:00.007, Memory: 18.00 MB

OK (1 test, 0 assertions)

• PHPUnit test have to check every case
• PHPUnit 4 Annotations
• Testing against the filesystem with vfsStream

PHP 8.3, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8