Articles Tagged ‘surefire’

Testing Java Applications for Resilience by Simulating Network Problems with Toxiproxy, JUnit and the Docker Maven Plugin

Sunday, July 29th, 2018

When implementing distributed systems, client-server architectures and simple applications with network related functionalities, everything is fine when we’re in the development or in the testing stage because the network is reliable and the communicating systems are not as stressed as they are in production.

But to sleep well we want to validate how resilient we have implemented our systems, how they behave when the network fails, the latency rises, the bandwidth is limited, connections time out and so on.

In the following tutorial I will demonstrate how to set up a testing environment to simulate different classical network problems with a tool named Toxiproxy and I will show how to integrate it with the well known Java testing stack with Maven and JUnit.

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Setting up Kafka Brokers for Testing with Kafka-Unit

Wednesday, March 28th, 2018

When writing test for applications that interact with Kafka brokers we often need to setup a decent environment including an instance of Kafka and ZooKeeper.

Though Kafka ships with some classes for testing, setting up a simple testing environment is quite easier with the kafka-unit library that offers JUnit test rule support or a fast programmatic setup within no time.

In the following short example, I’d like to show how create a simple setup using Maven, Surefire and kafka-unit. (more…)

Assuring Architectural Rules with ArchUnit

Monday, July 3rd, 2017

Maintaining architecture rules and constraints for a specific software project or an application is not easy as textual documentation is easily forgotten after a while and hard to verify.

ArchUnit is a testing library that allows developers and software architects to write down such rules as executable tests that may be run by the development teams and the integration servers.

In the following article I will demonstrate the basic features of this library by applying rules and constraints to an existing application.

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Template Driven Test POJO Generation with Fixture Factory and Java

Tuesday, June 20th, 2017

In our tests we often need to create a bunch of test-objects that are populated with random-data. This data needs to follow specific rules as identifiers need to be unique or must be incremented, string-properties must follow special conventions and so on. In the following short tutorial I will demonstrate how to generate such test data using the Fixture Factory library. (more…)

Running categorized Tests using JUnit, Maven and Annotated-Test Suites

Thursday, December 6th, 2012

Sometimes we need to classify the tests in a project and a possible solution to achieve this goal is to assign different categories to the tests.

Often we’re doing this to separate the execution of fast-running and long-running tests or to run a specific set of tests that is only applicable in special situations.

To run a specific set of categorized tests there are different options and in the following tutorial we’ll be covering two of them: by configuring the Maven Surefire Plug-in or by using a JUnit Test Suite and the JUnit annotations.

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