Add travis ci config file, Facade Design Pattern and PHP Code Sniffer

Author: Hyunk3l

.travis.yml

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+language: php
+php:
+  - 5.4
+  - 5.5
+  - 5.6
+  - hhvm
+
+before_script:
+  - composer self-update
+  - composer install --prefer-source --no-interaction --dev
+
+branches:
+  only:
+    - master

Structural/Facade/CoffeeDispenser.php

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+<?php
+
+namespace PhpDesignPatterns\Structural\Facade;
+
+/**
+ * Class CoffeeDispenser
+ * @package PhpDesignPatterns\Structural\Facade
+ */
+Class CoffeeDispenser implements DispenserInterface
+{
+    /**
+     * Get the product.
+     *
+     * @return string
+     */
+    public function getProduct()
+    {
+        return 'coffee: 10mg';
+    }
+}

Structural/Facade/CoffeeMakerFacade.php

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+<?php
+
+namespace PhpDesignPatterns\Structural\Facade;
+
+/**
+ * Class CoffeeMakerFacade
+ * @package PhpDesignPatterns\Structural\Facade
+ */
+Class CoffeeMakerFacade
+{
+    /**
+     * Minimum number of cups to make.
+     *
+     * @var integer
+     */
+    const MINIMUM_CUPS = 1;
+
+    /**
+     * Instance of Dispenser.
+     *
+     * @var Dispenser
+     */
+    private $coffee_dispenser;
+
+    /**
+     * Instance of Dispenser.
+     *
+     * @var Dispenser
+     */
+    private $sugar_dispenser;
+
+    /**
+     * Instance of Dispenser.
+     *
+     * @var Dispenser
+     */
+    private $water_dispenser;
+
+    /**
+     *
+     */
+    public function __construct()
+    {
+        $this->coffee_dispenser = new CoffeeDispenser;
+        $this->sugar_dispenser  = new SugarDispenser;
+        $this->water_dispenser  = new WaterDispenser;
+    }
+
+    /**
+     * Make N cups of coffee.
+     *
+     * @param integer $cups Number of cups to make.
+     * @return array
+     */
+    public function makeCups($cups)
+    {
+        $cups = $this->checkCups($cups);
+
+        $coffee_cups = array();
+        for($i=1;$i<$cups+1;$i++) {
+            $products = implode(',', $this->getProducts());
+            $coffee_cups["coffee #".$i] = $products;
+        }
+        return $coffee_cups;
+    }
+
+    /**
+     * Just check cups.
+     *
+     * @param mixed $cups
+     * @return integer
+     */
+    private function checkCups($cups)
+    {
+        if(static::MINIMUM_CUPS > $cups) {
+            $cups = static::MINIMUM_CUPS;
+        }
+        return $cups;
+    }
+
+    /**
+     * Get products from different dispensers.
+     *
+     * @return array
+     */
+    private function getProducts()
+    {
+        return array(
+            $this->sugar_dispenser->getProduct(),
+            $this->coffee_dispenser->getProduct(),
+            $this->water_dispenser->getProduct(),
+        );
+    }
+}

Structural/Facade/DispenserInterface.php

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+<?php
+
+namespace PhpDesignPatterns\Structural\Facade;
+
+/**
+ * Interface DispenserInterface
+ * @package PhpDesignPatterns\Structural\Facade
+ */
+interface DispenserInterface
+{
+    /**
+     * Get the dispenser product.
+     *
+     * @return mixed
+     */
+    public function getProduct();
+}

Structural/Facade/README.md

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+# Facade Design Pattern
+
+## Intent
+
+“Provide a unified interface to a set of interfaces in a subsystem. Facade defines a higher-level interface that makes the subsystem easier to use.”
+
+Excerpt From: Erich Gamma. “Design Patterns: Elements of Reusable Object-Oriented Software.”

Structural/Facade/SugarDispenser.php

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+<?php
+
+namespace PhpDesignPatterns\Structural\Facade;
+
+/**
+ * Class SugarDispenser
+ * @package PhpDesignPatterns\Structural\Facade
+ */
+Class SugarDispenser implements DispenserInterface
+{
+    /**
+     * Get the product.
+     *
+     * @return string
+     */
+    public function getProduct()
+    {
+        return 'sugar: 3mg';
+    }
+}

Structural/Facade/WaterDispenser.php

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+<?php
+
+namespace PhpDesignPatterns\Structural\Facade;
+
+/**
+ * Class WaterDispenser
+ * @package PhpDesignPatterns\Structural\Facade
+ */
+Class WaterDispenser implements DispenserInterface
+{
+    /**
+     * Get the product.
+     *
+     * @return string
+     */
+    public function getProduct()
+    {
+        return 'water: 5ml';
+    }
+}

Tests/Structural/Facade/CoffeeDispenserTest.php

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+<?php
+
+namespace PhpDesignPatterns\Tests\Structural\Facade;
+
+use PhpDesignPatterns\Structural\Facade\CoffeeDispenser;
+
+/**
+ * Class CoffeeDispenserTest
+ * @package PhpDesignPatterns\Tests\Structural\Facade
+ */
+class CoffeeDispenserTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Testing get product.
+     */
+    public function testGetProduct()
+    {
+        $expected = 'coffee: 10mg';
+        $coffee_dispenser = new CoffeeDispenser;
+        $this->assertEquals($expected, $coffee_dispenser->getProduct(), 'The result is not the expected one.');
+    }
+}

Tests/Structural/Facade/CoffeeMakerFacadeTest.php

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+<?php
+
+namespace PhpDesignPatterns\Tests\Structural\Facade;
+
+use PhpDesignPatterns\Structural\Facade\CoffeeMakerFacade;
+
+/**
+ * Class CoffeeMakerFacadeTest
+ * @package PhpDesignPatterns\Tests\Structural\Facade
+ */
+class CoffeeMakerFacadeTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Testing get product.
+     */
+    public function testGetProduct()
+    {
+        $expected = array(
+            'coffee #1' => 'sugar: 3mg,coffee: 10mg,water: 5ml',
+            'coffee #2' => 'sugar: 3mg,coffee: 10mg,water: 5ml',
+            'coffee #3' => 'sugar: 3mg,coffee: 10mg,water: 5ml',
+            'coffee #4' => 'sugar: 3mg,coffee: 10mg,water: 5ml',
+        );
+        $coffee_maker = new CoffeeMakerFacade;
+        $this->assertEquals($expected, $coffee_maker->makeCups(count($expected)), 'The result is not the expected one.');
+    }
+}

Tests/Structural/Facade/SugarDispenserTest.php

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+<?php
+
+namespace PhpDesignPatterns\Tests\Structural\Facade;
+
+use PhpDesignPatterns\Structural\Facade\SugarDispenser;
+
+/**
+ * Class SugarDispenserTest
+ * @package PhpDesignPatterns\Tests\Structural\Facade
+ */
+class SugarDispenserTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Testing get product.
+     */
+    public function testGetProduct()
+    {
+        $expected = 'sugar: 3mg';
+        $sugar_dispenser = new SugarDispenser;
+        $this->assertEquals($expected, $sugar_dispenser->getProduct(), 'The result is not the expected one.');
+    }
+}