Lecture
Mock-object (from the English. Mock object , literally: "object-parody", "object-imitation", as well as "stand") - in object-oriented programming - the type of objects that implement the specified aspects of the simulated software environment. for example internet connection emulation or work with databases
A mock object is a concrete fictitious implementation of an interface intended solely for testing the interaction and for which a statement is expressed.
In procedural programming, a similar construction is called “dummy” (English is a stub). A function that yields a constant, or a random variable from a valid range of values.
Mock-objects are actively used in the development through testing.
During the use of Bocs, Dependency injection is often used.
PHP Laravel example
<? php
class QuestionsControllerTest extends TestCase {
protected $ questionMock;
public function setUp ()
{
// $ this-> questionMock = Mockery :: mock ('Question');
$ this-> questionMock = Mockery :: mock (Question :: class);
$ this-> app-> instance (Question :: class, $ this-> questionMock);
}
public function testQuestionIndex ()
{
$ this-> questionMock
-> shouldReceive ('latest')
-> once ();
$ this-> app-> instance ('Question', $ this-> questionMock);
$ this-> call ('GET', 'questions');
}
<? php namespace App \ Http \ Controllers;
use App \ Http \ Requests \ QuestionRequest;
use App \ Http \ Controllers \ Controller;
use App \ Question;
use Auth;
use Request;
class QuestionsController extends Controller {
protected $ question;
public function __construct (Question $ question)
{
$ this-> question = $ question;
}
public function index ()
{
$ questions = $ this-> question-> latest () -> get ();
return view ('questions.index', compact ('questions'));
}
...
launch
$ ./vendor/bin/phpunit tests / controllers / QuestionsControllerTest.php PHPUnit 4.5.0 by Sebastian Bergmann and contributors.
Time: 135 ms, Memory: 12.50Mb
A stub function (in programming) is a function that performs no meaningful action and returns an empty result or input data as it is. Same as the stub method.
Used by:
An example of a stub function in the C language:
void stub () |
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