What you'll learn
Where to use Testcontainers and why
Concepts and basics of Testcontainers library
Mocking systems as a whole instead of mocking certain modules in your code
Create, start and stop docker containers from your integration test code directly
How to integrate Testcontainers into the software build lifecycle
Usage of Testcontainers in example applications
Requirements
You should know about Docker basics
You should be experienced with java development
It helps if you have used a testing framework like junit already
It helps if you have worked with common frameworks in the Java ecosystem like Spring for example
Description
Why should you learn about Testcontainers, and what is it at all? If you reached here, you'll surely have an idea about that. I suppose you're testing your software already and want to figure out what Testcontainers can exactly do for you to somehow improve the quality of testing.So welcome here to the first course on Udemy regarding that topic. I'm Ansgar, and I'm a freelanced software engineer, working with tools like Testcontainers almost every day.Testcontainers points out, that it makes testing - especially integration testing - easier. I totally agree, but there are other - relevant and important - aspects which should be mentioned. Here are only a few examples:It makes extension of your integration tests scope to the outermost boundaries possible without having to switch to full-fledged e2e testsYou can avoid having potentially confusing test setup with mocks and fakesUsing H2 although that's likely not your production database? No longer soon, perhaps ...Not relying on JPA but on plain SQL and want to test your statements against a production-like database system? Easy with Testcontainers!Using Docker in your build lifecycle already? Then setting up Testcontainers is in a breeze...In this course, I'll talk about the above-mentioned topics and give you a step-by-step walkthrough of the most important features of Testcontainers. For this, I'll stick to the following guidelines:This course is about practice, not primarily theory (theory of testing for example)I keep sections short in order to accelerate your progress. I do this by not losing myself in endless details. If a question stays open: Leave me a messageFeedback and discussions are always welcome. I plan to extend this course content on demand based on your feedbackReady for takeoff? Subscribe to the course and let's go right away.
Overview
Section 1: Introduction
Lecture 1 Where does Testcontainers help?
Lecture 2 What problems it addresses
Lecture 3 How does it help in a nutshell
Section 2: Getting started
Lecture 4 System requirements
Lecture 5 Tooling requirements
Lecture 6 A first example
Section 3: Features
Lecture 7 Integration with junit 5
Lecture 8 Integration with junit 4
Lecture 9 Configure logging
Lecture 10 Port mapping
Lecture 11 Setting environment variables
Lecture 12 Bind mounts and volumes
Lecture 13 Accessing container logs
Lecture 14 Checking container liveness
Lecture 15 Checking container readiness
Lecture 16 Defining container dependencies
Lecture 17 Creating Docker images on the fly
Lecture 18 Image name substitution
Lecture 19 Using Docker Compose
Lecture 20 Using modules
Lecture 21 Testing inside a container
Section 4: Real world examples
Lecture 22 First things first
Lecture 23 Testing database access in SpringBoot
Lecture 24 Usage in Node.js connecting Express with Redis
Software developers who want to bring the power of Docker containers into their testing infrastructure,Software developers just interested in this topic


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