issue-X add phpunit

.travis.yml

@@ -1,12 +1,23 @@
-dist: trusty
+language: php
 
-services:
-  - docker
+php:
+  - '7.1'
+  - '7.2'
 
 install:
-  - cp .env.example .env
-  - eval "$(ssh-agent -s)"
-  - docker-compose up -d
+  - composer install
 
 script:
- - curl localhost:8080
+  - vendor/bin/phpunit --bootstrap vendor/autoload.php tests
+
+jobs:
+  include:
+    - stage: build
+      services:
+        - docker
+      install:
+        - cp .env.example .env
+        - eval "$(ssh-agent -s)"
+        - docker-compose up -d
+      script:
+       - curl localhost:8080

composer.json

@@ -3,9 +3,15 @@
   "description": "This app is an example application for using docker as a dev environment",
   "type": "project",
   "require-dev": {
-    "phpro/grumphp": "^0.13.1",
     "friendsofphp/php-cs-fixer": "^2.10",
-    "jakub-onderka/php-parallel-lint": "^0.9.2"
+    "jakub-onderka/php-parallel-lint": "^0.9.2",
+    "phpro/grumphp": "^0.13.1",
+    "phpunit/phpunit": "^7.0"
+  },
+  "autoload": {
+    "psr-4": {
+      "Matters\\": "src/"
+		}
   },
   "license": "MIT",
   "authors": [

phpunit.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false">
+</phpunit>

src/Armor.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Matters;
+
+class Armor
+{
+    private $defense;
+
+    public function __construct($defense)
+    {
+        $this->defense = $defense;
+    }
+
+    public function getDefense()
+    {
+        return $this->defense;
+    }
+}

src/Character.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Matters;
+
+class Character
+{
+    private $life;
+    private $force;
+    private $armor;
+    private $weapon;
+
+    public function __construct($life, $force)
+    {
+        $this->life = $life;
+        $this->force = $force;
+        $this->weapon = new Weapon(0);
+        $this->armor = new Armor(0);
+    }
+
+    public function attack(Character $opponent)
+    {
+        $opponent->receiveDamages($this->weapon->getDamages() + $this->force);
+    }
+
+    public function receiveDamages($damages)
+    {
+        $this->life -= $damages - ($this->armor->getDefense() + $this->force);
+    }
+
+    public function equip(Weapon $weapon)
+    {
+        $this->weapon = $weapon;
+    }
+
+    public function putsOn(Armor $armor)
+    {
+        $this->armor = $armor;
+    }
+
+    public function isAlive()
+    {
+        return $this->life > 0;
+    }
+};

src/Weapon.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Matters;
+
+class Weapon
+{
+    private $damages;
+
+    public function __construct($damages)
+    {
+        $this->damages = $damages;
+    }
+
+    public function getDamages()
+    {
+        return $this->damages;
+    }
+}

tests/CharacterTest.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Matters;
+
+use \PHPUnit\Framework\TestCase;
+
+class CharacterTest extends TestCase
+{
+    public function testAttack() {
+        $hero = new Character(30, 5);
+        $vilain = new Character(25, 8);
+
+        $theBiggestSwordOfAllTime = new Weapon(50);
+        $hero->equip($theBiggestSwordOfAllTime);
+
+        $simpleHoodie = new Armor(1);
+        $vilain->putsOn($simpleHoodie);
+
+        $hero->attack($vilain);
+        self::assertFalse($vilain->isAlive());
+    }
+}