PHP Unit: Create common object to work with - php

Question

I'm writing PHP Unit tests for a class, which make some curl requests. At the moment every test starts with my class instance initiation and login directive and ends with logout directive, e.g.
public function testSomeMethod(){
$a = new myClass();
$a->login();
....
$a->logout();
$this->assertTrue($smth);
I want to create one common object $a = new myClass(), call login method before all test and logout method after all tests. How can I do that?

Answer 1

In accordion with the PHPUnit documentation here you can use the following hook method:
The setUp() and tearDown() template methods are run once for each test
method (and on fresh instances) of the test case class.
Also
In addition, the setUpBeforeClass() and tearDownAfterClass() template
methods are called before the first test of the test case class is run
and after the last test of the test case class is run, respectively.
In your case you can define the login class as class member and instantiate (login) in the setUpBeforeClass() method and do the logout in the tearDownAfterClass()
EDIT: EXAMPLE
Consider the following class:
namespace Acme\DemoBundle\Service;
class MyService {
public function login()
{
echo 'login called'.PHP_EOL;
}
public function logout()
{
echo 'logout called'.PHP_EOL;
}
public function doService($name)
{
echo $name.PHP_EOL;
return $name;
}
}
This test case:
use Acme\DemoBundle\Service\MyService;
class MyServiceTest extends \PHPUnit_Framework_TestCase {
/**
* #var \Acme\DemoBundle\Service\MyService
*/
protected static $client;
public static function setUpBeforeClass()
{
self::$client = new MyService();
self::$client->login();
}
public function testSomeMethod1()
{
$value = self::$client->doService("test1");
$this->assertEquals("test1",$value);
}
public function testSomeMethod2()
{
$value = self::$client->doService("test2");
$this->assertEquals("test2",$value);
}
public static function tearDownAfterClass()
{
self::$client->logout();
}
}
Dump the following output:
login called .test1 .test2 logout called
Time: 49 ms, Memory: 6.00Mb
OK (2 tests, 2 assertions)
hope this help

Answer 2

Creating reusable / common object at class level ( to be use in methods/functions) answer by #Matteo was helpful, Here is my implementation
no need for multiple inheritance , or __construct() constructor, I spent a lot of time on that ( specially coming from java background)
<?php
namespace Tests\Unit;
use Tests\TestCase;
use App\Services\HelperService;
class HelperServiceTest extends TestCase
{
//Object that will be reused in function()'s of this HelperServiceTest class itself
protected static $HelperServiceObj;
//this is the magic function
public static function setUpBeforeClass()
{
self::$HelperServiceObj = new HelperService();
}
public function testOneHelperServiceToBeTrue()
{
$this->assertTrue(self::$HelperServiceObj->getValue());
}
public function testTwoHelperServiceToBeTrue()
{
$this->assertTrue(self::$HelperServiceObj->getValueTwo());
}
}
Refer official docs setUp() , setUpBeforeClass() , tearDown() for magic function like setUpBeforeClass()
Sample implementation of getValue() function in HelperServiceTest class
<?php
namespace App\Services;
class HelperServiceTest
{
function getValue(){
return true;
}
function getValueTwo(){
return true;
}
}