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DevOps

The Unit in Unit Testing

In this article, we will focus on how developers should consider using fake objects instead of mock objects, as fake objects offer similar isolation benefits while driving high confidence, clear documentation, and loose coupling between implementation and test code.

Tyson Gern
on Feb 21, 2023
Development

Proven Solutions to Five Test Automation Issues

Automated testing is often blocked due to some well-known issues, especially in a microservices architecture. API and service simulators can eliminate five common issues that block test automation.

Wojciech Bulaty
on Jan 16, 2023
DevOps

An Ode to Unit Tests: in Defense of the Testing Pyramid

The switch to the testing diamond approach has not effectively addressed issues caused by the testing pyramid. Instead, the focus should be on using unit tests correctly within a testable architecture.

Guilherme Ferreira
on Dec 19, 2022 4
Architecture & Design

Using API-First Development and API Mocking to Break Critical Path Dependencies

Teams are using API mocking to break critical path dependencies and enable what were serial execution sequences into parallel paths. This article looks at where mocks should be used for the greatest impact and provides a model to estimate the effect of implementing API mocking and an API-first approach.

Wojciech Bulaty
on Nov 17, 2021
.NET

The Fundamentals of Testing with Persistence Layers

Mocking out dependencies such as databases and other persistence layers leads to ineffective tests. Unfortunately, our industry is also focused on function-level testing to the exclusion of all else, so few are trained on how to write any other type of test. This article seeks to correct the issue by reintroducing the concept of testing with databases.

Jonathan Allen
on Oct 11, 2021 2
Java

Testing Quarkus Web Applications: Reactive Messaging, Kafka, and Testcontainers

Quarkus is a full-stack, Kubernetes-native Java framework that supports many coding styles, including reactive programming. Writing clean unit/component/integration tests for Quarkus applications when a reactive approach is used is vitally important. Here we demonstrate testing reactive code, reactive messaging, and full integration testing.

Alex Soto
on Mar 11, 2021 1
Java

Testing Quarkus Web Applications: Writing Clean Component Tests

In this article, we will learn how to write clean integration tests for Quarkus applications. We will see how we can write simple and clean tests for the following scenarios: a mail client, security with RBAC, testing using containers, and rest clients.

Alex Soto
on Mar 02, 2021
Java

Test-Driven Development: Really, It’s a Design Technique

Using a step-by-step example in Java, this article provides a practical example of how to use test-driven development (TDD) to divide, test, and conquer larger problems when coding.

Mohamed Taman
on May 10, 2019
Java

Tap Compare Testing with Diferencia and Java Microservices

“Tap compare” is a testing technique that allows you to test the behavior and performance of the new service by comparing its results against the old service. This article provides an example of using a new open source tool, Diferencia, and mirroring production traffic across both old and new services to compare the difference in result.

Alex Soto
on Feb 17, 2019 2
Cloud

How Contract Tests Improve the Quality of Your Distributed Systems

Catching bugs at the end of a development cycle is costly, but how do you incrementally test complex distributed systems? In this article, Marcin Grzejszczak looks at an integration testing approach for communication between components. He reviews contract testing, and Spring Cloud Contract, as one solution.

Marcin Grzejszczak
on Jul 29, 2018 1
Java

Automated Journey Testing with Cascade

Starting with a brief history of software testing, we investigate Cascade, a new framework for testing “journeys”, eliminating overlapping coverage to produce fast unit tests.

Robin de Villiers
on Aug 15, 2017
DevOps

The Holistic Approach: Preventing Software Disasters

Olivier Bonsignour on what "X-Raying" software means, how it can help prevent software disasters and why CIOs should care.

Olivier Bonsignour
on Apr 28, 2016 3