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Makefile

@@ -2,3 +2,9 @@
 test:
 	@echo "Design Pattern Tests"
 	php ./vendor/bin/phpunit --bootstrap ./vendor/autoload.php ./tests/ --testdox --colors 
+
+.PHONY: test-class
+test-class:
+	@echo "Design Pattern Tests for test class name"
+	php ./vendor/bin/phpunit --bootstrap ./vendor/autoload.php ./tests/ --testdox --colors --filter $(filter-out $@,$(MAKECMDGOALS))
+

src/Creational/FactoryMethod/Factory/AcousticGuitarFactory.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Growthdev\DesignPatterns\Creational\FactoryMethod\Factory;
+
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Product\AcousticGuitar;
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Product\MusicalInstrument;
+
+class AcousticGuitarFactory implements MusicalInstrumentFactory
+{
+    public function createMusicalInstrument(string $brand): MusicalInstrument
+    {
+        return new AcousticGuitar($brand);
+    }
+}

src/Creational/FactoryMethod/Factory/ElectricGuitarFactory.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Growthdev\DesignPatterns\Creational\FactoryMethod\Factory;
+
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Product\ElectricGuitar;
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Product\MusicalInstrument;
+
+class ElectricGuitarFactory implements MusicalInstrumentFactory
+{
+    public function createMusicalInstrument(string $brand): MusicalInstrument
+    {
+        return new ElectricGuitar($brand);
+    }
+}

src/Creational/FactoryMethod/Factory/MusicalInstrumentFactory.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Growthdev\DesignPatterns\Creational\FactoryMethod\Factory;
+
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Product\MusicalInstrument;
+
+interface MusicalInstrumentFactory
+{
+    public function createMusicalInstrument(string $brand): MusicalInstrument;
+}

src/Creational/FactoryMethod/MusicalInstrumentFactory.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Growthdev\DesignPatterns\Creational\FactoryMethod;
+
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Factory\AcousticGuitarFactory;
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Factory\ElectricGuitarFactory;
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Product\MusicalInstrument;
+
+class MusicalInstrumentFactory
+{
+    public const ACOUSTIC_GUITAR = 'acoustic_guitar';
+    public const ELECTRIC_GUITAR = 'electric_guitar';
+
+    public function createMusicalInstrument(string $type, string $brand): MusicalInstrument
+    {
+        switch ($type) {
+            case self::ACOUSTIC_GUITAR:
+                return (new AcousticGuitarFactory())->createMusicalInstrument($brand);
+            case self::ELECTRIC_GUITAR:
+                return (new ElectricGuitarFactory())->createMusicalInstrument($brand);
+            default:
+                throw new \InvalidArgumentException('Invalid musical instrument type');
+        }
+    }
+}

src/Creational/FactoryMethod/Product/AcousticGuitar.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Growthdev\DesignPatterns\Creational\FactoryMethod\Product;
+
+class AcousticGuitar extends MusicalInstrument
+{
+    public function make(): void
+    {
+        printf("Made a %s acoustic guitar \n\n", $this->getBrand());
+    }
+}

src/Creational/FactoryMethod/Product/ElectricGuitar.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Growthdev\DesignPatterns\Creational\FactoryMethod\Product;
+
+class ElectricGuitar extends MusicalInstrument
+{
+    public function make(): void
+    {
+        printf("Made a %s eletric guitar \n\n", $this->getBrand());
+    }
+}

src/Creational/FactoryMethod/Product/MusicalInstrument.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Growthdev\DesignPatterns\Creational\FactoryMethod\Product;
+
+abstract class MusicalInstrument implements MusicalInstrumentProduct
+{
+    private string $brand;
+
+    public function __construct(string $brand)
+    {
+        $this->brand = $brand;
+    }
+
+    protected function getBrand(): string
+    {
+        return $this->brand;
+    }
+}

src/Creational/FactoryMethod/Product/MusicalInstrumentProduct.php

@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Growthdev\DesignPatterns\Creational\FactoryMethod\Product;
+
+interface MusicalInstrumentProduct
+{
+    public function make(): void;
+}

tests/Creational/FactoryMethod/MusicalInstrumentFactoryTest.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DesignPatterns\Creational\FactoryMethod;
+
+use Growthdev\DesignPatterns\Creational\FactoryMethod\MusicalInstrumentFactory;
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Product\AcousticGuitar;
+use Growthdev\DesignPatterns\Creational\FactoryMethod\Product\ElectricGuitar;
+use PHPUnit\Framework\TestCase;
+
+final class MusicalInstrumentFactoryTest extends TestCase
+{
+    public function testCanCreateAcousticGuitar(): void
+    {
+        $factory = new MusicalInstrumentFactory();
+        $acousticGuitar = $factory->createMusicalInstrument(
+            MusicalInstrumentFactory::ACOUSTIC_GUITAR,
+            'Giannini Model'
+        );
+
+        $acousticGuitar->make();
+
+        $this->assertInstanceOf(AcousticGuitar::class, $acousticGuitar);
+    }
+
+    public function testCanCreateEletricGuitar(): void
+    {
+        $factory = new MusicalInstrumentFactory();
+        $eletricGuitar = $factory->createMusicalInstrument(
+            MusicalInstrumentFactory::ELECTRIC_GUITAR,
+            'Tagima Model'
+        );
+
+        $eletricGuitar->make();
+
+        $this->assertInstanceOf(ElectricGuitar::class, $eletricGuitar);
+    }
+
+    public function testShouldThrowExceptionWhenUnknownInstrument(): void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+
+        $factory = new MusicalInstrumentFactory();
+        $factory->createMusicalInstrument('Unknown', 'Giannini Model');
+    }
+}