JUnit – Carsten Spräner https://www.spraener.de Innovationen für Ihren Erfolg Wed, 27 Aug 2025 08:25:25 +0000 de hourly 1 https://wordpress.org/?v=6.8.2 https://www.spraener.de/wp-content/uploads/2023/12/CS-Icon-gruen.png JUnit – Carsten Spräner https://www.spraener.de 32 32 10/2023 – Today: Transportation (Rails) https://www.spraener.de/2023/12/11/10-2023-today-transportation-rails/ Mon, 11 Dec 2023 08:09:08 +0000 https://www.spraener.de/?p=2672 Modernization of a productive application to current software components. An existing internal application will be converted to modern and currently secure components as part of the contract.Struts-1, Spring 3, Hibernate 3, and similar outdated systems will be replaced. Stability in production had to be guaranteed under all circumstances for the changeover duration. Details Activities Conception, […]

Der Beitrag 10/2023 – Today: Transportation (Rails) erschien zuerst auf Carsten Spräner.

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Modernization of a productive application to current software components.

An existing internal application will be converted to modern and currently secure components as part of the contract.
Struts-1, Spring 3, Hibernate 3, and similar outdated systems will be replaced. Stability in production had to be guaranteed under all circumstances for the changeover duration.

Details

  • Integrating AWS Secret Manager
  • Creation and implementation of JUnit tests
  • Provide a new implementation of jmockit to run with Java-21
  • Design and implement the infrastructure for automatic integration tests with selenium
  • Replacing outdated APIs with new versions
  • Conversion of the built environment to Docker / docker-compose 
  • General maintenance and care
  • Guaranteeing production stability

Activities

Conception, implementation, and testing of the newly implemented functions with comparative JUnit tests. Converted the backend from Hibernate Criteria API to JPA Builder API and identified software problems during the conversion. Creation of a set of web tests for automatic quality assurance of new versions with HtmlUnit. Introduction of Docker as built and production environment.

IT-Technologies

AWS, Selenium Web Test, Spring 6, Hibernate 5, Docker, docker-compose, Angular, Struts-1 (web-legacy), JUnit, Mockito, JBoss-8, JDK-21, Jenkins

Let’s Talk About Your Project

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Contact Me

Der Beitrag 10/2023 – Today: Transportation (Rails) erschien zuerst auf Carsten Spräner.

]]> 04/2022 – 10/2023: Department of Justice https://www.spraener.de/2023/10/31/04-2022-10-2023-department-of-justice/ Tue, 31 Oct 2023 18:04:40 +0000 https://www.spraener.de/?p=2632 Implementing the backend of a lawsuit management software. The German Department of Justice initiated the project and aims to implement nationwide software to manage lawsuits. My task was to design, implement, and test the backend part of this system. Details Activities Design and developing µService endpoints with Spring Boot in consultation with the frontend team. […]

Der Beitrag 04/2022 – 10/2023: Department of Justice erschien zuerst auf Carsten Spräner.

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Implementing the backend of a lawsuit management software.

The German Department of Justice initiated the project and aims to implement nationwide software to manage lawsuits. My task was to design, implement, and test the backend part of this system.

Details

  • Developing with IntelliJ and Java-17
  • API-Specification with openAPI and implement the backend with Spring Boot
  • Running with Spring Boot
  • Organized with Jira and GitHub
  • Build with maven and Jenkins pipeline  

Activities

Design and developing µService endpoints with Spring Boot in consultation with the frontend team. Test the endpoints with JUnit to get a test coverage above 90%. Describing backend integration tests with IntelliJ HTTP-component.

IT-Technologies

µServices, Spring Boot 2, Java 17, Groovy, Docker, Docker-Compose, Swagger, Lombok, MapStruct, JBoss, J2EE, MySQL/MariaDB, JUnit, Mockito, maven, GIT, Lucene 3.8 / 9.2.0, IntelliJ, Eclipse, Jira, Confluence, GitLab, Jenkins, RedMine

Let’s Talk About Your Project

Just send me a message!

Contact Me

Der Beitrag 04/2022 – 10/2023: Department of Justice erschien zuerst auf Carsten Spräner.

]]> 06/2021 – 11/2021: Global Retailer https://www.spraener.de/2021/11/30/implementing-user-stories/ Tue, 30 Nov 2021 14:51:00 +0000 https://www.spraener.de/?p=530 Implementing user stories on an international till. The project builds and maintains the till for a global retailer. The project was organized as a scaled SCRUM project. Technically, it was built in 100% pure Java, with nearly all software components self-developed. Details Activities Developing user stories in a scaled SCRUM-Team with pure Java. Organizing the […]

Der Beitrag 06/2021 – 11/2021: Global Retailer erschien zuerst auf Carsten Spräner.

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Implementing user stories on an international till.

The project builds and maintains the till for a global retailer. The project was organized as a scaled SCRUM project. Technically, it was built in 100% pure Java, with nearly all software components self-developed.

Details

  • Developing under Eclipse with Java 8
  • Highly model-driven development with UML and TREND-Framework
  • Running under JBoss
  • Organized with Jira and GitHub
  • Build with maven
  • 95 % of self-developed software
  • Pure Java knowledge required

Activities

Developing user stories in a scaled SCRUM-Team with pure Java. Organizing the cross-team development in the Planning Chapter.

IT-Technologies

Java 8, PostgreSQL, Eclipse, TREND, JUnit, Mockito, maven, GIT, Jira, Confluence, SCRUM

Let’s Talk About Your Project

Just send me a message!

Contact Me

Der Beitrag 06/2021 – 11/2021: Global Retailer erschien zuerst auf Carsten Spräner.

]]> 03/2006 – 07/2009: Insurance https://www.spraener.de/2009/07/31/further-development-external-sales-system/ Fri, 31 Jul 2009 12:11:16 +0000 http://www.spraener.de/?p=349 Further development of an external sales system for the business offices of an insurance company. The system includes all business transactions of an insurance agency, especially creating offers and contracts. Details Activities Architecture consulting, implementation, and tests. IT-Technologies Ant, CVS, DB2, Eclipse, HTML, J2EE, Java, JavaScript, JDBC, JUnit, Camunda, NetBeans, Chrome-Extension-API, OJB, OOD, OR-Mapping, OS/2, […]

Der Beitrag 03/2006 – 07/2009: Insurance erschien zuerst auf Carsten Spräner.

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Further development of an external sales system for the business offices of an insurance company.

The system includes all business transactions of an insurance agency, especially creating offers and contracts.

Details

  • Developing a J2EE-Framework to integrate into the legacy system
  • Enabling automatic tests for all aspects of the application. (business rules, calculations, validations, and persistence)
  • Support of notebooks, especially a stand-alone operating mode. (Swing-UI).
  • Supporting operations on a WebSphere application server
  • Supporting different database systems and integrating a calculation and validation framework (VP/MS)
  • New design of application development with concern for a short time-to-market

Activities

Architecture consulting, implementation, and tests.

IT-Technologies

Ant, CVS, DB2, Eclipse, HTML, J2EE, Java, JavaScript, JDBC, JUnit, Camunda, NetBeans, Chrome-Extension-API, OJB, OOD, OR-Mapping, OS/2, MySQL, Test automatization, Tomcat, UML, VisualAge for Java, VP/MS, XML, XML4J, XSL

Let’s Talk About Your Project

Just send me a message!

Contact Me

Der Beitrag 03/2006 – 07/2009: Insurance erschien zuerst auf Carsten Spräner.

]]> 01/2002 – 07/2005: Insurance https://www.spraener.de/2005/07/31/sales-system/ Sun, 31 Jul 2005 12:27:00 +0000 http://www.spraener.de/?p=362 Sales system for the agencies of an insurance company. The system includes all business transactions required by an insurance company agency. The project was focused on the reimplementation of the creation of offers and contracts. These transactions need to be integrated into the legacy system. Details Activities Consulting in architecture, implementation, and tests. IT-Technologies Ant, […]

Der Beitrag 01/2002 – 07/2005: Insurance erschien zuerst auf Carsten Spräner.

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Sales system for the agencies of an insurance company.

The system includes all business transactions required by an insurance company agency. The project was focused on the reimplementation of the creation of offers and contracts. These transactions need to be integrated into the legacy system.

Details

  • Creating a J2EE-Framework to replace the old offer and contract system
  • Automatic testing of the application to deliver high-quality software.
  • Supporting stand-alone operation mode for Laptops.
  • Supporting operating on a J2EE Container platform (WebSphere)
  • Supporting different database systems for offline and online operation – Integrating a validation and calculation framework (VP/MS)
  • Redesign the development process to get a very short Time-To-Market

Activities

Consulting in architecture, implementation, and tests.

IT-Technologies

Ant, ANTLR, C, CVS, DB2, HTML, J2EE, Java, JavaScript, JDBC, JUnit, MDA, NetBeans, OJB, OOA, OOD, OR-Mapping, OS/2, SQL, Swing, Test automation, UML, VisualAge for Java, VP/MS, WebSphere Application Server, XML, XSL

Let’s Talk About Your Project

Just send me a message!

Contact Me

Der Beitrag 01/2002 – 07/2005: Insurance erschien zuerst auf Carsten Spräner.

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