php unit test mockery set property from method - php

Question

I'm learning php unit test. I've question; how to set property value from method? Here is my example code:
class Variables
{
public $date;
public function setDate(\DateTime $date) {
$this->date = $date;
}
}
class Process
{
public function process(Variables $var) {
if ($var->date->getTimeStamp() > 0) {
return 'success';
}
return 'failed';
}
}
class ProcessTest extends PHPUnit_Framework_TestCase
{
public function testProcess()
{
$mock = \Mockery::mock('Variables');
$mock->date = new \DateTime();
$procy = new Process();
$actual = $procy->process($mock);
$this->assertEquals('success', $actual);
}
}
Like in the codes above, I know, I can set property date by:
$mock->date = new \DateTime();
because it's public.
What if the property date is private or protected? How to set from mockery? I tried to do something like this, but got an error.
$mock->shouldReceive('setDate')->once()->andSet('date', new \DateTime());
Sample class that describes my question :
class Calculation {
protected $a;
protected $b;
protected $c;
public function __construct() {
;
}
public function setA($a) {
$this->a = $a;
}
public function setB($b) {
$this->b = $b;
}
public function call() {
$this->c = (int) $this->a + (int) $this->b;
}
public function getC() {
return $this->c;
}
}
I need your advice.

Answer 1

You would probably add an accessor to Variables, use it in Process::process() instead of accessing the public property, and thus, you would have to set up an expectation that the accessor is called when you invoke Process::process():
$date = new \DateTime();
$variables = \Mockery::mock('Variables');
$variables->shouldReceive('getDate')->withNoArgs()->andReturn($date);
$process = new Process();
$this->assertSame('success', $process->process($variables));
For reference, see:
http://docs.mockery.io/en/latest/reference/expectations.html