1.6. Simple Factory
1.6.1. Purpose
SimpleFactory is a simple factory pattern.
It differs from the static factory because it is not static. Therefore, you can have multiple factories, differently parameterized, you can subclass it and you can mock it. It always should be preferred over a static factory!
1.6.2. UML Diagram
1.6.3. Code
You can also find this code on GitHub
SimpleFactory.php
1<?php
2
3declare(strict_types=1);
4
5namespace DesignPatterns\Creational\SimpleFactory;
6
7class SimpleFactory
8{
9 public function createBicycle(): Bicycle
10 {
11 return new Bicycle();
12 }
13}
Bicycle.php
1<?php
2
3declare(strict_types=1);
4
5namespace DesignPatterns\Creational\SimpleFactory;
6
7class Bicycle
8{
9 public function driveTo(string $destination)
10 {
11 }
12}
1.6.4. Usage
1 $factory = new SimpleFactory();
2 $bicycle = $factory->createBicycle();
3 $bicycle->driveTo('Paris');
1.6.5. Test
Tests/SimpleFactoryTest.php
1<?php
2
3declare(strict_types=1);
4
5namespace DesignPatterns\Creational\SimpleFactory\Tests;
6
7use DesignPatterns\Creational\SimpleFactory\Bicycle;
8use DesignPatterns\Creational\SimpleFactory\SimpleFactory;
9use PHPUnit\Framework\TestCase;
10
11class SimpleFactoryTest extends TestCase
12{
13 public function testCanCreateBicycle()
14 {
15 $bicycle = (new SimpleFactory())->createBicycle();
16 $this->assertInstanceOf(Bicycle::class, $bicycle);
17 }
18}