diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 67237c1..9a74db8 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -6,4 +6,6 @@ Summary of changes proposed in this Pull Request:
 - 
 
 PR checklist:
+- [ ] Updated relevant documentation
 - [ ] Updated CHANGELOG.md 
+- [ ] Added tests for my change
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 7aedc83..a0ee665 100755
--- a/.gitignore
+++ b/.gitignore
@@ -70,3 +70,13 @@ crashlytics.properties
 crashlytics-build.properties
 fabric.properties
 
+# composer
+/vendor/
+composer.phar
+
+# Project
+phpunit.phar
+.phpunit.result.cache
+phpunit.xml
+/build/
+.env
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..2ad276c
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,27 @@
+language: php
+
+sudo: false
+
+php:
+  - 7.1
+  - 7.2
+  - 7.3
+
+branches:
+  only:
+    - master
+    - fb-travis-ci
+
+before_script:
+  - travis_retry composer self-update
+  - travis_retry composer install --no-interaction --prefer-source
+
+script:
+  - vendor/bin/phpunit
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
+
+cache:
+  directories:
+    - $HOME/.composer/cache
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c2389a..6773b9c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,12 @@
 ## v1.2.3 (in development)
 
 ### New features & improvements:
+- Update required php version to 7.1.3 (https://www.php.net/supported-versions.php)
+- Add descriptions
+- Add tests
 
 ### Bug fixes:
+- Add missing ";"
 
 ## v1.2.2 (release date: 13th April 2019)
 
diff --git a/FbBotApp.php b/FbBotApp.php
index b880693..0cc3c19 100755
--- a/FbBotApp.php
+++ b/FbBotApp.php
@@ -580,6 +580,4 @@ public function getCurlError()
     {
         return $this->curl_error;
     }
-
-
 }
diff --git a/Menu/LocalizedMenu.php b/Menu/LocalizedMenu.php
index 83b74d8..50ce245 100755
--- a/Menu/LocalizedMenu.php
+++ b/Menu/LocalizedMenu.php
@@ -8,13 +8,19 @@
  */
 class LocalizedMenu
 {
+    private $locale;
 
-    private $locale ;
-
-    private $composer_input_disabled ;
+    private $composer_input_disabled;
 
     private $menuItems;
 
+    /**
+     * LocalizedMenu constructor.
+     *
+     * @param string $locale
+     * @param boolean $composer_input_disabled
+     * @param null|array $menuItems
+     */
     public function __construct($locale, $composer_input_disabled, $menuItems = null) {
         
         $this->locale = $locale;
diff --git a/Menu/MenuItem.php b/Menu/MenuItem.php
index 45f5964..fdd6d13 100755
--- a/Menu/MenuItem.php
+++ b/Menu/MenuItem.php
@@ -28,14 +28,14 @@ class MenuItem
      *
      * @var string
      */
-    protected $type ;
+    protected $type;
 
     /**
      * Button title
      *
      * @var string
      */
-    protected $title ;
+    protected $title;
 
     /**
      * Button url
@@ -70,14 +70,14 @@ class MenuItem
      * 
      * @var null|string
      */
-    protected $webview_share_button = null ;
+    protected $webview_share_button = null;
 
     /**
      * MessageButton constructor.
      *
      * @param string $type
      * @param string $title
-     * @param string $url url or postback
+     * @param string|array $data
      */
     public function __construct($type, $title, $data, $webview_height_ratio = '', $messenger_extensions = false, $fallback_url = '', $webview_share_button =  null)
     {
@@ -133,4 +133,4 @@ public function getData()
         }
         return $result;
     }
-}
\ No newline at end of file
+}
diff --git a/Messages/AccountLink.php b/Messages/AccountLink.php
index f4feed9..2a076ba 100755
--- a/Messages/AccountLink.php
+++ b/Messages/AccountLink.php
@@ -8,7 +8,6 @@
  */
 class AccountLink
 {
-
   /**
    * Link Account title
    *
@@ -49,8 +48,9 @@ class AccountLink
    * @param string $subtitle
    * @param string $url button url
    * @param string $image_url
+   * @param boolean $logout
    */
-  public function __construct($title, $subtitle = '', $url = '', $image_url = '', $logout = FALSE)
+  public function __construct($title, $subtitle = '', $url = '', $image_url = '', $logout = false)
   {
     $this->title = $title;
     $this->subtitle = $subtitle;
@@ -68,11 +68,11 @@ public function getData()
   {
     if($this->logout)
     {
-      $buttons = new MessageButton( MessageButton::TYPE_ACCOUNT_UNLINK, '');
+      $buttons = new MessageButton(MessageButton::TYPE_ACCOUNT_UNLINK, '');
     }
     else
     {
-      $buttons = new MessageButton( MessageButton::TYPE_ACCOUNT_LINK, '', $this->url);
+      $buttons = new MessageButton(MessageButton::TYPE_ACCOUNT_LINK, '', $this->url);
     }
     
     $result = [
@@ -81,7 +81,7 @@ public function getData()
       'image_url' => $this->image_url,
       'buttons' => [$buttons->getData()]
     ];
+
     return $result;
   }
-
 }
diff --git a/Messages/Address.php b/Messages/Address.php
index fecd8df..e726baa 100755
--- a/Messages/Address.php
+++ b/Messages/Address.php
@@ -33,4 +33,4 @@ public function getData()
     {
         return $this->data;
     }
-}
\ No newline at end of file
+}
diff --git a/Messages/Adjustment.php b/Messages/Adjustment.php
index fac4909..befeaf6 100755
--- a/Messages/Adjustment.php
+++ b/Messages/Adjustment.php
@@ -33,4 +33,4 @@ public function getData()
     {
         return $this->data;
     }
-}
\ No newline at end of file
+}
diff --git a/Messages/MessageButton.php b/Messages/MessageButton.php
index 15612f1..3417b6a 100755
--- a/Messages/MessageButton.php
+++ b/Messages/MessageButton.php
@@ -140,45 +140,44 @@ public function getData()
             case self::TYPE_POSTBACK:
                 $result['title'] = $this->title;
                 $result['payload'] = $this->url;
-            break;
+                break;
 
             case self::TYPE_CALL:
                 $result['title'] = $this->title;
                 $result['payload'] = $this->url;
-            break;
+                break;
 
             case self::TYPE_WEB:
-              $result['title'] = $this->title;
-              $result['url'] = $this->url;
-
-              if ($this->webview_height_ratio) {
-                  $result['webview_height_ratio'] = $this->webview_height_ratio;
-              }
-
-              if ($this->messenger_extensions){
-                  $result['messenger_extensions'] = $this->messenger_extensions;
-                  $result['fallback_url'] = $this->fallback_url;
-              }
-              
-              if($this->webview_share_button){
-                  $result['webview_share_button'] = $this->webview_share_button ;
-              }
-            break;
+                $result['title'] = $this->title;
+                $result['url'] = $this->url;
+
+                if ($this->webview_height_ratio) {
+                    $result['webview_height_ratio'] = $this->webview_height_ratio;
+                }
+
+                if ($this->messenger_extensions){
+                    $result['messenger_extensions'] = $this->messenger_extensions;
+                    $result['fallback_url'] = $this->fallback_url;
+                }
+
+                if($this->webview_share_button){
+                    $result['webview_share_button'] = $this->webview_share_button;
+                }
+                break;
 
             case self::TYPE_SHARE:
-              //only share_contents needed
-               if ($this->share_contents)
-                $result['share_contents'] = $this->share_contents->getData();
-            break;
+                //only share_contents needed
+                if ($this->share_contents)
+                    $result['share_contents'] = $this->share_contents->getData();
+                break;
 
             case self::TYPE_ACCOUNT_LINK:
                 $result['url'] = $this->url;
-            break;
+                break;
 
             case self::TYPE_ACCOUNT_UNLINK:
-              //only type needed
-            break;
-
+                //only type needed
+                break;
         }
 
         return $result;
diff --git a/Messages/MessageReceiptElement.php b/Messages/MessageReceiptElement.php
index c17190b..d80ee81 100755
--- a/Messages/MessageReceiptElement.php
+++ b/Messages/MessageReceiptElement.php
@@ -59,4 +59,4 @@ public function getData()
             'currency' => $this->currency
         ];
     }
-}
\ No newline at end of file
+}
diff --git a/Messages/SenderAction.php b/Messages/SenderAction.php
index 61ee7f7..a69919d 100755
--- a/Messages/SenderAction.php
+++ b/Messages/SenderAction.php
@@ -55,4 +55,4 @@ public function getData()
             'sender_action' => $this->action
         ];
     }
-}
\ No newline at end of file
+}
diff --git a/Messages/Summary.php b/Messages/Summary.php
index e090986..3c4e551 100755
--- a/Messages/Summary.php
+++ b/Messages/Summary.php
@@ -33,4 +33,4 @@ public function getData()
     {
         return $this->data;
     }
-}
\ No newline at end of file
+}
diff --git a/README.md b/README.md
index 8fa01fb..a3eeba4 100755
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
+[![Build Status](https://travis-ci.com/pimax/fb-messenger-php.svg?branch=master)](https://travis-ci.com/pimax/fb-messenger-php)
+[![Coverage badge](https://codecov.io/gh/pimax/fb-messenger-php/branch/master/graphs/badge.svg)](https://codecov.io/gh/pimax/fb-messenger-php)
+
 FB Messenger Bot PHP API
 ========================
 
@@ -10,8 +13,12 @@ The minimum requirement is that your Web server supports PHP 5.4.
 INSTALLATION
 ------------
 
+Version 1.2.2 is the last with PHP ">=5.4.0" support.  
+**As of version 2.0, PHP 7.1.3 is required.**
+
 ```
 composer require "pimax/fb-messenger-php" "dev-master"
+composer require "pimax/fb-messenger-php" "<version>"
 ```
 
 BASIC USAGE
diff --git a/composer.json b/composer.json
index e47923f..67172ca 100755
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
   "name": "pimax/fb-messenger-php",
-  "description": " Facebook Messenger Bot PHP API",
+  "description": "Facebook Messenger Bot PHP API",
   "homepage": "https://github.com/pimax/fb-messenger-php",
   "license": "MIT",
   "authors": [
@@ -12,10 +12,15 @@
     }
   ],
   "require": {
-    "php": ">=5.4.0"
+    "php": "^7.1.3"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^7.3"
   },
-
   "autoload": {
     "psr-4": { "pimax\\": "" }
+  },
+  "scripts": {
+    "test": "phpunit"
   }
-}
\ No newline at end of file
+}
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..37c9075
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,1492 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "fd8b0485d6bebcbff8757aa5f00d2135",
+    "packages": [],
+    "packages-dev": [
+        {
+            "name": "doctrine/instantiator",
+            "version": "1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/instantiator.git",
+                "reference": "a2c590166b2133a4633738648b6b064edae0814a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/a2c590166b2133a4633738648b6b064edae0814a",
+                "reference": "a2c590166b2133a4633738648b6b064edae0814a",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1"
+            },
+            "require-dev": {
+                "doctrine/coding-standard": "^6.0",
+                "ext-pdo": "*",
+                "ext-phar": "*",
+                "phpbench/phpbench": "^0.13",
+                "phpstan/phpstan-phpunit": "^0.11",
+                "phpstan/phpstan-shim": "^0.11",
+                "phpunit/phpunit": "^7.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Doctrine\\Instantiator\\": "src/Doctrine/Instantiator/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Marco Pivetta",
+                    "email": "ocramius@gmail.com",
+                    "homepage": "http://ocramius.github.com/"
+                }
+            ],
+            "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
+            "homepage": "https://www.doctrine-project.org/projects/instantiator.html",
+            "keywords": [
+                "constructor",
+                "instantiate"
+            ],
+            "time": "2019-03-17T17:37:11+00:00"
+        },
+        {
+            "name": "myclabs/deep-copy",
+            "version": "1.9.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/myclabs/DeepCopy.git",
+                "reference": "e6828efaba2c9b79f4499dae1d66ef8bfa7b2b72"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/e6828efaba2c9b79f4499dae1d66ef8bfa7b2b72",
+                "reference": "e6828efaba2c9b79f4499dae1d66ef8bfa7b2b72",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1"
+            },
+            "replace": {
+                "myclabs/deep-copy": "self.version"
+            },
+            "require-dev": {
+                "doctrine/collections": "^1.0",
+                "doctrine/common": "^2.6",
+                "phpunit/phpunit": "^7.1"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "DeepCopy\\": "src/DeepCopy/"
+                },
+                "files": [
+                    "src/DeepCopy/deep_copy.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Create deep copies (clones) of your objects",
+            "keywords": [
+                "clone",
+                "copy",
+                "duplicate",
+                "object",
+                "object graph"
+            ],
+            "time": "2019-04-07T13:18:21+00:00"
+        },
+        {
+            "name": "phar-io/manifest",
+            "version": "1.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phar-io/manifest.git",
+                "reference": "7761fcacf03b4d4f16e7ccb606d4879ca431fcf4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phar-io/manifest/zipball/7761fcacf03b4d4f16e7ccb606d4879ca431fcf4",
+                "reference": "7761fcacf03b4d4f16e7ccb606d4879ca431fcf4",
+                "shasum": ""
+            },
+            "require": {
+                "ext-dom": "*",
+                "ext-phar": "*",
+                "phar-io/version": "^2.0",
+                "php": "^5.6 || ^7.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Arne Blankerts",
+                    "email": "arne@blankerts.de",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Sebastian Heuer",
+                    "email": "sebastian@phpeople.de",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "Developer"
+                }
+            ],
+            "description": "Component for reading phar.io manifest information from a PHP Archive (PHAR)",
+            "time": "2018-07-08T19:23:20+00:00"
+        },
+        {
+            "name": "phar-io/version",
+            "version": "2.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phar-io/version.git",
+                "reference": "45a2ec53a73c70ce41d55cedef9063630abaf1b6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phar-io/version/zipball/45a2ec53a73c70ce41d55cedef9063630abaf1b6",
+                "reference": "45a2ec53a73c70ce41d55cedef9063630abaf1b6",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.6 || ^7.0"
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Arne Blankerts",
+                    "email": "arne@blankerts.de",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Sebastian Heuer",
+                    "email": "sebastian@phpeople.de",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "Developer"
+                }
+            ],
+            "description": "Library for handling version information and constraints",
+            "time": "2018-07-08T19:19:57+00:00"
+        },
+        {
+            "name": "phpdocumentor/reflection-common",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/ReflectionCommon.git",
+                "reference": "21bdeb5f65d7ebf9f43b1b25d404f87deab5bfb6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/21bdeb5f65d7ebf9f43b1b25d404f87deab5bfb6",
+                "reference": "21bdeb5f65d7ebf9f43b1b25d404f87deab5bfb6",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.6"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": [
+                        "src"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jaap van Otterdijk",
+                    "email": "opensource@ijaap.nl"
+                }
+            ],
+            "description": "Common reflection classes used by phpdocumentor to reflect the code structure",
+            "homepage": "http://www.phpdoc.org",
+            "keywords": [
+                "FQSEN",
+                "phpDocumentor",
+                "phpdoc",
+                "reflection",
+                "static analysis"
+            ],
+            "time": "2017-09-11T18:02:19+00:00"
+        },
+        {
+            "name": "phpdocumentor/reflection-docblock",
+            "version": "4.3.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
+                "reference": "bdd9f737ebc2a01c06ea7ff4308ec6697db9b53c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/bdd9f737ebc2a01c06ea7ff4308ec6697db9b53c",
+                "reference": "bdd9f737ebc2a01c06ea7ff4308ec6697db9b53c",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0",
+                "phpdocumentor/reflection-common": "^1.0.0",
+                "phpdocumentor/type-resolver": "^0.4.0",
+                "webmozart/assert": "^1.0"
+            },
+            "require-dev": {
+                "doctrine/instantiator": "~1.0.5",
+                "mockery/mockery": "^1.0",
+                "phpunit/phpunit": "^6.4"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": [
+                        "src/"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mike van Riel",
+                    "email": "me@mikevanriel.com"
+                }
+            ],
+            "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
+            "time": "2019-04-30T17:48:53+00:00"
+        },
+        {
+            "name": "phpdocumentor/type-resolver",
+            "version": "0.4.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/TypeResolver.git",
+                "reference": "9c977708995954784726e25d0cd1dddf4e65b0f7"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/9c977708995954784726e25d0cd1dddf4e65b0f7",
+                "reference": "9c977708995954784726e25d0cd1dddf4e65b0f7",
+                "shasum": ""
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+                    "email": "whatthejeff@gmail.com"
+                },
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+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                },
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+                    "name": "Adam Harvey",
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+                }
+            ],
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+            "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
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+        },
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+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
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+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
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+            "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
+            "time": "2018-10-04T04:07:39+00:00"
+        },
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+            "version": "2.0.1",
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+                "url": "https://github.com/sebastianbergmann/version.git",
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+                }
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+            ],
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+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
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+            ],
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+            "homepage": "https://github.com/sebastianbergmann/version",
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+            },
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+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.11-dev"
+                }
+            },
+            "autoload": {
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+                    "Symfony\\Polyfill\\Ctype\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
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+                    "email": "BackEndTea@gmail.com"
+                }
+            ],
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+                "compatibility",
+                "ctype",
+                "polyfill",
+                "portable"
+            ],
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+        },
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+            "version": "1.1.2",
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+                    "email": "bschussek@gmail.com"
+                }
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+}
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..7011dc8
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit
+        backupGlobals="false"
+        backupStaticAttributes="false"
+        bootstrap="vendor/autoload.php"
+        colors="true"
+        convertErrorsToExceptions="true"
+        convertNoticesToExceptions="true"
+        convertWarningsToExceptions="true"
+        processIsolation="false"
+        stopOnFailure="false">
+    <testsuites>
+        <testsuite name="Test Suite">
+            <directory suffix=".php">./tests/TestCase</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">./Messages</directory>
+            <directory suffix=".php">./Menu</directory>
+            <file>FbBotApp.php</file>
+            <file>UserProfile.php</file>
+        </whitelist>
+    </filter>
+
+    <logging>
+        <log type="coverage-clover" target="clover.xml"/>
+    </logging>
+</phpunit>
diff --git a/tests/Mocks/Menu/LocalizedMenu/default.json b/tests/Mocks/Menu/LocalizedMenu/default.json
new file mode 100644
index 0000000..d1153d6
--- /dev/null
+++ b/tests/Mocks/Menu/LocalizedMenu/default.json
@@ -0,0 +1,21 @@
+{
+    "locale": "default",
+    "composer_input_disabled": false,
+    "call_to_actions": [
+        {
+        "type": "postback",
+        "title": "title_1",
+        "payload": "PAYLOAD_1"
+        },
+        {
+        "type": "postback",
+        "title": "title_2",
+        "payload": "PAYLOAD_2"
+        },
+        {
+        "type": "postback",
+        "title": "title_3",
+        "payload": "PAYLOAD_3"
+        }
+    ]
+}
diff --git a/tests/Mocks/Menu/LocalizedMenu/default_no_items.json b/tests/Mocks/Menu/LocalizedMenu/default_no_items.json
new file mode 100644
index 0000000..3ff807e
--- /dev/null
+++ b/tests/Mocks/Menu/LocalizedMenu/default_no_items.json
@@ -0,0 +1,4 @@
+{
+    "locale": "default",
+    "composer_input_disabled": false
+}
diff --git a/tests/Mocks/Menu/MenuItem/nested.json b/tests/Mocks/Menu/MenuItem/nested.json
new file mode 100644
index 0000000..ad9d97a
--- /dev/null
+++ b/tests/Mocks/Menu/MenuItem/nested.json
@@ -0,0 +1,21 @@
+{
+  "type": "nested",
+  "title": "title",
+  "call_to_actions": [
+    {
+      "type": "postback",
+      "title": "title_1",
+      "payload": "PAYLOAD_1"
+    },
+    {
+      "type": "postback",
+      "title": "title_2",
+      "payload": "PAYLOAD_2"
+    },
+    {
+      "type": "postback",
+      "title": "title_3",
+      "payload": "PAYLOAD_3"
+    }
+  ]
+}
diff --git a/tests/Mocks/Menu/MenuItem/postback.json b/tests/Mocks/Menu/MenuItem/postback.json
new file mode 100644
index 0000000..7471e13
--- /dev/null
+++ b/tests/Mocks/Menu/MenuItem/postback.json
@@ -0,0 +1,5 @@
+{
+    "type": "postback",
+    "title": "title",
+    "payload": "PAYLOAD"
+}
diff --git a/tests/Mocks/Menu/MenuItem/web.json b/tests/Mocks/Menu/MenuItem/web.json
new file mode 100644
index 0000000..f970d21
--- /dev/null
+++ b/tests/Mocks/Menu/MenuItem/web.json
@@ -0,0 +1,9 @@
+{
+  "type": "web_url",
+  "url": "https://github.com/pimax/fb-messenger-php/issues",
+  "title": "title",
+  "webview_height_ratio": "full",
+  "messenger_extensions": true,
+  "fallback_url": "https://github.com/pimax/fb-messenger-php",
+  "webview_share_button": "hide"
+}
diff --git a/tests/Mocks/Messages/AccountLink/link.json b/tests/Mocks/Messages/AccountLink/link.json
new file mode 100644
index 0000000..4db090c
--- /dev/null
+++ b/tests/Mocks/Messages/AccountLink/link.json
@@ -0,0 +1,11 @@
+{
+  "title": "title",
+  "subtitle": "subtitle",
+  "image_url": "https://www.facebook.com/images/fb_icon_325x325.png",
+  "buttons": [
+    {
+      "type": "account_link",
+      "url": "https://www.example.com/oauth/authorize"
+    }
+  ]
+}
diff --git a/tests/Mocks/Messages/AccountLink/unlink.json b/tests/Mocks/Messages/AccountLink/unlink.json
new file mode 100644
index 0000000..7700ea8
--- /dev/null
+++ b/tests/Mocks/Messages/AccountLink/unlink.json
@@ -0,0 +1,10 @@
+{
+  "title": "title",
+  "subtitle": "subtitle",
+  "image_url": "https://www.facebook.com/images/fb_icon_325x325.png",
+  "buttons": [
+    {
+      "type": "account_unlink"
+    }
+  ]
+}
diff --git a/tests/Mocks/Messages/SenderAction/mark_seen.json b/tests/Mocks/Messages/SenderAction/mark_seen.json
new file mode 100644
index 0000000..7426ad7
--- /dev/null
+++ b/tests/Mocks/Messages/SenderAction/mark_seen.json
@@ -0,0 +1,6 @@
+{
+    "recipient": {
+        "id": "1234567890"
+    },
+    "sender_action": "mark_seen"
+}
diff --git a/tests/Mocks/Messages/SenderAction/typing_off.json b/tests/Mocks/Messages/SenderAction/typing_off.json
new file mode 100644
index 0000000..c0a3da9
--- /dev/null
+++ b/tests/Mocks/Messages/SenderAction/typing_off.json
@@ -0,0 +1,6 @@
+{
+    "recipient": {
+        "id": "1234567890"
+    },
+    "sender_action": "typing_off"
+}
diff --git a/tests/Mocks/Messages/SenderAction/typing_on.json b/tests/Mocks/Messages/SenderAction/typing_on.json
new file mode 100644
index 0000000..f2dd686
--- /dev/null
+++ b/tests/Mocks/Messages/SenderAction/typing_on.json
@@ -0,0 +1,6 @@
+{
+    "recipient": {
+        "id": "1234567890"
+    },
+    "sender_action": "typing_on"
+}
diff --git a/tests/Mocks/Response/User/user.json b/tests/Mocks/Response/User/user.json
new file mode 100644
index 0000000..324c55b
--- /dev/null
+++ b/tests/Mocks/Response/User/user.json
@@ -0,0 +1,8 @@
+{
+  "first_name": "Peter",
+  "last_name": "Chang",
+  "profile_pic": "https://placeimg.com/200/200/nature",
+  "locale": "en_US",
+  "timezone": -7,
+  "gender": "male"
+}
\ No newline at end of file
diff --git a/tests/TestCase/AbstractTestCase.php b/tests/TestCase/AbstractTestCase.php
new file mode 100644
index 0000000..9b585b0
--- /dev/null
+++ b/tests/TestCase/AbstractTestCase.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace pimax\Test\TestCase;
+
+use PHPUnit\Framework\TestCase;
+
+class AbstractTestCase extends TestCase
+{
+}
diff --git a/tests/TestCase/Menu/LocalizedMenuTest.php b/tests/TestCase/Menu/LocalizedMenuTest.php
new file mode 100644
index 0000000..5ec652f
--- /dev/null
+++ b/tests/TestCase/Menu/LocalizedMenuTest.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace pimax\Test\TestCase\Menu;
+
+use pimax\Menu\MenuItem;
+use pimax\Menu\LocalizedMenu;
+use pimax\Test\TestCase\AbstractTestCase;
+
+/**
+ * Class LocalizedMenuTest.
+ */
+class LocalizedMenuTest extends AbstractTestCase
+{
+    public function testLocalizedMenuDefault(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Menu/LocalizedMenu/default.json');
+
+        $localizedMenu = new LocalizedMenu(
+            'default', 
+            false,
+            [
+                new MenuItem(MenuItem::TYPE_POSTBACK, 'title_1', 'PAYLOAD_1'),
+                new MenuItem(MenuItem::TYPE_POSTBACK, 'title_2', 'PAYLOAD_2'),
+                new MenuItem(MenuItem::TYPE_POSTBACK, 'title_3', 'PAYLOAD_3'),
+            ]
+        );
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($localizedMenu->getData()));
+    }
+
+    public function testLocalizedMenuWithoutItems(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Menu/LocalizedMenu/default_no_items.json');
+
+        $localizedMenu = new LocalizedMenu('default', false);
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($localizedMenu->getData()));
+    }
+}
diff --git a/tests/TestCase/Menu/MenuItemTest.php b/tests/TestCase/Menu/MenuItemTest.php
new file mode 100644
index 0000000..c539848
--- /dev/null
+++ b/tests/TestCase/Menu/MenuItemTest.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace pimax\Test\TestCase\Menu;
+
+use pimax\Menu\MenuItem;
+use pimax\Test\TestCase\AbstractTestCase;
+
+/**
+ * Class MenuItemTest.
+ */
+class MenuItemTest extends AbstractTestCase
+{
+    public function testItemPostback(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Menu/MenuItem/postback.json');
+
+        $menuItem = new MenuItem(MenuItem::TYPE_POSTBACK, 'title', 'PAYLOAD');
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($menuItem->getData()));
+    }
+
+    public function testItemWeb(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Menu/MenuItem/web.json');
+
+        $menuItem = new MenuItem(
+            MenuItem::TYPE_WEB,
+            'title',
+            'https://github.com/pimax/fb-messenger-php/issues',
+            'full',
+            true,
+            'https://github.com/pimax/fb-messenger-php',
+            'hide'
+        );
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($menuItem->getData()));
+    }
+
+    public function testItemNested(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Menu/MenuItem/nested.json');
+
+        $menuItem = new MenuItem(
+            MenuItem::TYPE_NESTED, 
+            'title',
+            [
+                new MenuItem(MenuItem::TYPE_POSTBACK, 'title_1', 'PAYLOAD_1'),
+                new MenuItem(MenuItem::TYPE_POSTBACK, 'title_2', 'PAYLOAD_2'),
+                new MenuItem(MenuItem::TYPE_POSTBACK, 'title_3', 'PAYLOAD_3'),
+            ]
+        );
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($menuItem->getData()));
+    }
+}
diff --git a/tests/TestCase/Messages/AccountLinkTest.php b/tests/TestCase/Messages/AccountLinkTest.php
new file mode 100644
index 0000000..544d07a
--- /dev/null
+++ b/tests/TestCase/Messages/AccountLinkTest.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace pimax\Test\TestCase\Messages;
+
+use pimax\Messages\AccountLink;
+use pimax\Test\TestCase\AbstractTestCase;
+
+/**
+ * Class AccountLinkTest.
+ */
+class AccountLinkTest extends AbstractTestCase
+{
+    public function testAccountLink(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Messages/AccountLink/link.json');
+
+        $accountLink = new AccountLink(
+            $title='title', 
+            $subtitle='subtitle', 
+            $url='https://www.example.com/oauth/authorize',
+            $image_url='https://www.facebook.com/images/fb_icon_325x325.png', 
+            $logout=false
+        );
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($accountLink->getData()));
+    }
+
+    public function testAccountUnlink(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Messages/AccountLink/unlink.json');
+
+        $accountUnlink = new AccountLink(
+            $title='title', 
+            $subtitle='subtitle', 
+            $url='',
+            $image_url='https://www.facebook.com/images/fb_icon_325x325.png', 
+            $logout=true
+        );
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($accountUnlink->getData()));
+    }
+}
diff --git a/tests/TestCase/Messages/SenderActionTest.php b/tests/TestCase/Messages/SenderActionTest.php
new file mode 100644
index 0000000..baad816
--- /dev/null
+++ b/tests/TestCase/Messages/SenderActionTest.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace pimax\Test\TestCase\Messages;
+
+use pimax\Messages\SenderAction;
+use pimax\Test\TestCase\AbstractTestCase;
+
+/**
+ * Class SenderActionTest.
+ */
+class SenderActionTest extends AbstractTestCase
+{
+    public function testMarkSeen(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Messages/SenderAction/mark_seen.json');
+
+        $markSeen = new SenderAction('1234567890', SenderAction::ACTION_MARK_SEEN);
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($markSeen->getData()));
+    }
+
+    public function testTypingOn(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Messages/SenderAction/typing_on.json');
+
+        $typingOn = new SenderAction('1234567890', SenderAction::ACTION_TYPING_ON);
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($typingOn->getData()));
+    }
+
+    public function testTypingOff(): void
+    {
+        $expectedJson = file_get_contents(__DIR__ . '/../../Mocks/Messages/SenderAction/typing_off.json');
+
+        $typingOff = new SenderAction('1234567890', SenderAction::ACTION_TYPING_OFF);
+
+        $this->assertJsonStringEqualsJsonString($expectedJson, json_encode($typingOff->getData()));
+    }
+}
diff --git a/tests/TestCase/UserProfile/UserProfileTest.php b/tests/TestCase/UserProfile/UserProfileTest.php
new file mode 100644
index 0000000..aca70dd
--- /dev/null
+++ b/tests/TestCase/UserProfile/UserProfileTest.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace pimax\Test\TestCase\UserProfile;
+
+use pimax\UserProfile;
+use pimax\Test\TestCase\AbstractTestCase;
+
+/**
+ * Class UserProfileTest.
+ */
+class UserProfileTest extends AbstractTestCase
+{
+    /**
+     * UserProfile class instance
+     *
+     * @var pimax\UserProfile
+     */
+    protected $userProfile;
+
+    public function setUp(): void
+    {
+        $this->data = file_get_contents(__DIR__ . '/../../Mocks/Response/User/user.json');
+
+        $this->userProfile = new UserProfile(json_decode($this->data, true));
+    }
+
+    public function testUserProfile(): void
+    {
+        $this->assertSame('Peter', $this->userProfile->getFirstName());
+        $this->assertSame('Chang', $this->userProfile->getLastName());
+        $this->assertSame('https://placeimg.com/200/200/nature', $this->userProfile->getPicture());
+        $this->assertSame('en_US', $this->userProfile->getLocale());
+        $this->assertSame(-7, $this->userProfile->getTimezone());
+        $this->assertSame('male', $this->userProfile->getGender());
+    }
+
+    public function testUserProfileData(): void
+    {
+        $this->assertJsonStringEqualsJsonString($this->data, json_encode($this->userProfile->getData()));
+    }
+}