complete factory method

Author: hs040x

readme.md

@@ -4,7 +4,8 @@
 * [Design Patterns](https://github.com/harryosmar/design-patterns/tree/master/src/)
   * [Creational Patterns](https://github.com/harryosmar/design-patterns/tree/master/src/CreationalPatterns)
     * [Abstract Factory Design Pattern](https://github.com/harryosmar/design-patterns/tree/master/src/CreationalPatterns/AbstractFactoryDesignPattern)
-    * [BuilderDesignPattern](https://github.com/harryosmar/design-patterns/tree/master/src/CreationalPatterns/BuilderDesignPattern)
+    * [Builder Design Pattern](https://github.com/harryosmar/design-patterns/tree/master/src/CreationalPatterns/BuilderDesignPattern)
+    * [Factory Method](https://github.com/harryosmar/design-patterns/tree/master/src/CreationalPatterns/FactoryMethod)
 
 
 ## How to set up

src/CreationalPatterns/AbstractFactoryDesignPattern/AbstractBook/NullMySQLBook.php

@@ -0,0 +1,11 @@
+<?php
+/**
+ * @author    Harry Osmar Sitohang <[email protected]>
+ * @copyright 2018 Wayfair LLC - All rights reserved
+ */
+
+namespace Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook;
+
+class NullMySQLBook extends AbstractMySQLBook {
+
+}

src/CreationalPatterns/AbstractFactoryDesignPattern/AbstractBook/NullPHPBook.php

@@ -0,0 +1,11 @@
+<?php
+/**
+ * @author    Harry Osmar Sitohang <[email protected]>
+ * @copyright 2018 Wayfair LLC - All rights reserved
+ */
+
+namespace Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook;
+
+class NullPHPBook extends AbstractPHPBook {
+
+}

src/CreationalPatterns/FactoryMethod/AbstractFactoryMethod.php

@@ -0,0 +1,26 @@
+<?php
+/**
+ * @author    Harry Osmar Sitohang <[email protected]>
+ * @copyright 2018 Wayfair LLC - All rights reserved
+ */
+
+namespace Sample\CreationalPatterns\FactoryMethod;
+
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook\AbstractMySQLBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook\AbstractPHPBook;
+
+abstract class AbstractFactoryMethod {
+  /**
+   * @param string $param
+   *
+   * @return AbstractPHPBook
+   */
+  abstract function makePHPBook(string $param) : AbstractPHPBook;
+
+  /**
+   * @param string $param
+   *
+   * @return AbstractMySQLBook
+   */
+  abstract function makeMySQLBook(string $param) : AbstractMySQLBook;
+}

src/CreationalPatterns/FactoryMethod/FactoryMethod.php

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+<?php
+/**
+ * @author    Harry Osmar Sitohang <[email protected]>
+ * @copyright 2018 Wayfair LLC - All rights reserved
+ */
+
+namespace Sample\CreationalPatterns\FactoryMethod;
+
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook\AbstractMySQLBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook\AbstractPHPBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook\NullMySQLBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook\NullPHPBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\OReillyBooks\OReillyMySQLBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\OReillyBooks\OReillyPHPBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\SamsBooks\SamsMySQLBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\SamsBooks\SamsPHPBook;
+
+class FactoryMethod extends AbstractFactoryMethod {
+  /**
+   * @param string $param
+   *
+   * @return AbstractPHPBook
+   */
+  function makePHPBook(string $param) : AbstractPHPBook {
+    switch ($param) {
+      case "OReilly":
+        return new OReillyPHPBook();
+        break;
+      case "sams":
+        return new SamsPHPBook();
+        break;
+      default:
+        return new NullPHPBook();
+        break;
+    }
+  }
+
+  /**
+   * @param string $param
+   *
+   * @return AbstractMySQLBook
+   */
+  function makeMySQLBook(string $param) : AbstractMySQLBook {
+    switch ($param) {
+      case "OReilly":
+        return new OReillyMySQLBook();
+        break;
+      case "sams":
+        return new SamsMySQLBook();
+        break;
+      default:
+        return new NullMySQLBook();
+        break;
+    }
+  }
+}

tests/unit/FactoryMethodTest.php

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+<?php
+/**
+ * @author    Harry Osmar Sitohang <[email protected]>
+ * @copyright 2018 Wayfair LLC - All rights reserved
+ */
+
+namespace Sample\Tests\unit;
+
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook\NullMySQLBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\AbstractBook\NullPHPBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\OReillyBooks\OReillyMySQLBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\OReillyBooks\OReillyPHPBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\SamsBooks\SamsMySQLBook;
+use Sample\CreationalPatterns\AbstractFactoryDesignPattern\SamsBooks\SamsPHPBook;
+use Sample\CreationalPatterns\FactoryMethod\FactoryMethod;
+
+class FactoryMethodTest extends Base {
+  /**
+   * @test
+   */
+  public function shouldBeAbleToGenerateBookUsingFactoryMethod() {
+    $factoryMethod = new FactoryMethod();
+
+    $this->assertInstanceOf(OReillyPHPBook::class, $factoryMethod->makePHPBook('OReilly'));
+    $this->assertInstanceOf(OReillyMySQLBook::class, $factoryMethod->makeMySQLBook('OReilly'));
+    $this->assertInstanceOf(SamsPHPBook::class, $factoryMethod->makePHPBook('sams'));
+    $this->assertInstanceOf(SamsMySQLBook::class, $factoryMethod->makeMySQLBook('sams'));
+    $this->assertInstanceOf(NullPHPBook::class, $factoryMethod->makePHPBook('404'));
+    $this->assertInstanceOf(NullMySQLBook::class, $factoryMethod->makeMySQLBook('404'));
+  }
+}