简单工厂模式
目的
这是一个简单的工厂模式。
它不同于静态工厂模式，因为它不是静态的。因此，你可以有多个工厂，这些工厂有不同的参数，你可以把它作为子类，也可以模拟它。它总是应该优先于静态工厂模式!
UML 类图
代码
SimpleFactory.php
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| <?php declare(strict_types = 1);
namespace DesignPatterns\Creational\SimpleFactory;
class SimpleFactory
{
public function createBicycle(): Bicycle
{
return new Bicycle();
}
}
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Bicycle.php
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| <?php declare(strict_types = 1);
namespace DesignPatterns\Creational\SimpleFactory;
class Bicycle
{
public function driveTo(string $destination)
{
}
}
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使用
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| $factory = new SimpleFactory();
$bicycle = $factory->createBicycle();
$bicycle->driveTo('Paris');
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测试
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| <?php declare(strict_types = 1);
namespace DesignPatterns\Creational\SimpleFactory\Tests;
use DesignPatterns\Creational\SimpleFactory\Bicycle;
use DesignPatterns\Creational\SimpleFactory\SimpleFactory;
use PHPUnit\Framework\TestCase;
class SimpleFactoryTest extends TestCase
{
public function testCanCreateBicycle()
{
$bicycle = (new SimpleFactory())->createBicycle();
$this->assertInstanceOf(Bicycle::class, $bicycle);
}
}
|
