Installing and testing DC/OS on AWS


In the step-by-step tutorial Getting Started with DC/OS on Vagrant, we have learned how to install a MesosPhere DC/OS data center operating system locally. This time, we will install a DC/OS system on AWS Cloud: existing AWS CloudFormation templates will help us create a fully functional DC/OS data center with a Mesos master and five Mesos slaves within … More Installing and testing DC/OS on AWS

Behavior-Driven Angular – Part 2: Inserting REST Data as “innerHTML” into a Web Application


Today, we will extend the behavior-driven development example of the previous blog post and add the blog content to the document. Like last time, we will retrieve the HTML content from the WordPress API. Sounds easy, right? We will see that the challenge is to display the HTML content correctly, so we do not see escaped … More Behavior-Driven Angular – Part 2: Inserting REST Data as “innerHTML” into a Web Application

Behavior-Driven Angular – part 1: Consuming a RESTful Web Service with Angular 4


In this step-by-step tutorial, we will follow a behavior-driven development approach to create an Angular 4 application from Angular CLI. The hello-world-like application will consume the WordPress REST API and it will display a blog post title. We will create and run end-to-end test scripts that simulate the customer behavior on a Chrome browser within … More Behavior-Driven Angular – part 1: Consuming a RESTful Web Service with Angular 4

Angular 4: Automatic Table of Contents


In this step by step tutorial, we will go through the process of creating a two-level automatic Table of Contents by adding Angular Typescript/javascript code. We will perform following steps: We will discuss alternative solutions. We will start an Angular Docker Container. We will download a demo application with server-side rendering and WordPress REST API integration. … More Angular 4: Automatic Table of Contents

Getting Started with DC/OS on Vagrant


In the course of this Hello World style tutorial, we will explore DC/OS, a Data Center Operating System developed and open sourced by Mesosphere with the target to hide the complexity of data centers. We will install DC/OS on your local PC or Notebook using Vagrant and VirtualBox, deploy a “hello world” application with more than one instance, load balance between … More Getting Started with DC/OS on Vagrant

Jenkins Part 6: Automated Cross Browser Testing via BrowserStack


With the BrowserStack cloud-based solution, there is no need to buy many different hardware types for testing your web site for many different mobile devices and operating systems. In this blog post, we will learn how to integrate BrowserStack-based automated cross browser tests into a continuous integration workflow controlled by the pupular Jenkins tool. First we will demonstrate how to … More Jenkins Part 6: Automated Cross Browser Testing via BrowserStack

Jenkins Part 4.2: Code Quality Tests via Checkstyle


Today, we will show how to use Checkstyle for improving the style of Java code. First, we will add Checkstyle to Gradle in order to create XML reports for a single build. Jenkins allows us to visualize the results of more than one test/build run into historic reports. After that, we will show, how a developer can … More Jenkins Part 4.2: Code Quality Tests via Checkstyle

Jenkins Part 4.1: Functional Java Tests via JUnit


You also think that functional tests are one of the most important ingredients for delivering high quality software? You share my opinion that we should help the developer automating this task in order to get comparable results and to receive meaningful trend reports? I will cover functional tests here. Instructions on how to perform code quality tests and performance … More Jenkins Part 4.1: Functional Java Tests via JUnit

Jenkins Part 3.1: periodic vs triggered Builds


Today, we will make sure that Jenkins will detect a code change in the software repository without manual intervention. We will show two methods to do so: Periodic Builds via Schedulers: Jenkins periodically asks the software repository for any code changes Triggered Builds via Webhooks: Jenkins is triggered by the software repository to perform the build … More Jenkins Part 3.1: periodic vs triggered Builds

Getting Started with Mesos Resource Reservation & Marathon Watchdog – A “Hello World” Example


Today, we will introduce Apache Mesos, an open source distributed computing system with the target to allow applications to run on a computer cluster as if it was running on a single computer. On top of a Mesos cluster, we will run Mesosphere Marathon, an open source container orchestration platform. Similar to a watchdog, Marathon helps running and maintaining … More Getting Started with Mesos Resource Reservation & Marathon Watchdog – A “Hello World” Example