ap2i/tests/Service/Security/SwitchUserTest.php

<?php
namespace App\Test\Service\Security;

use App\Entity\Access\Access;
use App\Service\Security\SwitchUser;
use Doctrine\Common\Collections\ArrayCollection;
use PHPUnit\Framework\TestCase;

class SwitchUserTest extends TestCase
{
    public function setUp():void
    {
    }

    /**
     * @see SwitchUser::isAllowedToSwitch()
     */
    public function testIsAllowedToSwitch(){
        $childrenMockMock = $this->getMockBuilder(Access::class)->getMock();

        $children = new ArrayCollection();
        $children->add($childrenMockMock);

        $userMockMock = $this->getMockBuilder(Access::class)->getMock();
        $userMockMock
            ->expects($this->once())
            ->method('getChildren')
            ->willReturn($children);

        $switchUser = new SwitchUser();
        $this->assertTrue($switchUser->isAllowedToSwitch($userMockMock, $childrenMockMock));
    }

    /**
     * @see SwitchUser::isAllowedToSwitch()
     */
    public function testIsNotAllowedToSwitch(){
        $childrenMockMock = $this->getMockBuilder(Access::class)->getMock();
        $userMockMock = $this->getMockBuilder(Access::class)->getMock();
        $userMockMock
            ->expects($this->once())
            ->method('getChildren')
            ->willReturn(new ArrayCollection());

        $switchUser = new SwitchUser();
        $this->assertFalse($switchUser->isAllowedToSwitch($userMockMock, $childrenMockMock));
    }
}