How to pass arguments to a mocked class constructor - laravel

Question

I have one method (getUsers()) in my class that I would like to mock but I have a constructor in my class. How can I pass values to the constructor when mocking my class?
class MyNotifications {
/**
* Date time.
*
* #var DateTime|mixed|null
*/
public $date;
public function __construct($date = NULL)
{
if (!$date) {
$date = new \DateTime();
}
$this->date = $date;
}
/**
* Get users.
*
* #param int $node_id
* Node id.
*
* #return mixed
* #throws \GuzzleHttp\Exception\GuzzleException
*/
public function getUsers($node_id)
{
// API code goes here.
}
/**
* Get day.
*
* #return false|int|string
*/
public function getDay()
{
return $this->date->format('d');
}
}
class MyNotificationsTest extends TestCase
{
use RefreshMigrations;
public function testOneDay()
{
$mock = $this->getMockBuilder(MyNotifications::class)->onlyMethods([
'getUsers',
])->getMock();
$mock->method('getUsers')->willReturn(['User 1']);
dump($mock->getDay());
dump($mock->getUsers(1));
}
}
For example, I would like to pass the date "2021-12-22" to the constructor so the getDay() method returns 22 instead of the current day.

Answer 1

I haven't used PHPUnit mocks before (usually defaulting to Mockery) but looking at the documentation are you able to call setConstructorArgs(array $args) on the getMockBuilder?
class MyNotificationsTest extends TestCase
{
use RefreshMigrations;
public function testOneDay()
{
$mock = $this->getMockBuilder(MyNotifications::class)
->onlyMethods([
'getUsers',
])
->setConstructorArgs(['2021-03-08'])
->getMock();
$mock->method('getUsers')->willReturn(['User 1']);
dump($mock->getDay());
dump($mock->getUsers(1));
}
}