Test-Driven Development Courses and Certifications

Foundations of TDD in Kotlin with JUnit: The Principles

Master Test-Driven Development in Kotlin using JUnit, from Red-Green-Refactor workflow to SOLID principles and dependency injection, improving code quality through practical examples.

• CodeSignal
• 4 hours
• On-Demand
• Free Certificate

Isolating Dependencies with Test Doubles in Scala

Discover how test doubles like dummies, stubs, spies, mocks, and fakes can isolate units under test, control behavior, and help build reliable, fast, and maintainable tests in Scala.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Refactoring by Leveraging Tests with Scala & ScalaTest

Master refactoring techniques in Scala & ScalaTest to identify code smells, apply solutions, and maintain functionality through test-driven development with practical examples.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Isolating Dependencies using JUnit and Mockito

Master the essentials of test doubles in software testing, from dummies to mocks, and learn how to isolate units, control behavior, and build reliable tests using JUnit and Mockito.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Refactoring by Leveraging Tests with Kotlin & JUnit

Master refactoring techniques in Kotlin using TDD principles to identify code smells, apply solutions, and maintain functionality through comprehensive testing.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Increasing Code Test Coverage

Discover strategies to improve test coverage in Scala projects, learn to create characterization tests, and enhance testability through interfaces and mocks for safer code modifications.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Using Sprout and Wrap Techniques

Discover safe refactoring techniques to add functionality to existing code through sprouting and wrapping methods, minimizing risk while improving testability in Scala.

• CodeSignal
• 4 hours
• On-Demand
• Free Certificate

Foundations of TDD in Ruby and RSpec: The Fundamentals

Master Test-Driven Development in Ruby using RSpec, from Red-Green-Refactor cycles to SOLID principles and dependency injection, improving code quality and development efficiency.

• CodeSignal
• 4 hours
• On-Demand
• Free Certificate

Isolating Dependencies with Test Doubles in Ruby & RSpec

Explore test doubles in Ruby & RSpec - learn to use dummies, stubs, spies, mocks, and fakes to isolate dependencies and build faster, more reliable tests for better development practices.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Refactoring with Confidence Using Tests in Ruby & RSpec

Master refactoring techniques in Ruby & RSpec to identify code smells, implement effective solutions, and maintain functionality through comprehensive testing.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Isolating Dependencies with Test Doubles with Google Mock

Master test doubles with Google Mock to isolate dependencies, control behavior, and build reliable C++ tests using dummies, stubs, spies, mocks, and fakes.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Refactoring by Leveraging Tests with C++ & Google Test

Master C++ refactoring techniques to eliminate code smells, improve maintainability, and preserve functionality using Google Test in real-world TDD scenarios.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Isolating Dependencies with Test Doubles with Go & Testify

Master test doubles in Go using dummies, stubs, mocks, and fakes to isolate dependencies, control behavior, and build reliable, maintainable tests with Testify framework.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

Refactoring by Leveraging Your Tests with Go & Testify

Discover how to refactor Go code by identifying smells, extracting functions, eliminating duplication, and preserving functionality through comprehensive testing techniques.

• CodeSignal
• 3 hours
• On-Demand
• Free Certificate

DevOps Engineering

Master DevOps fundamentals with hands-on experience in Kubernetes, OpenShift, CI/CD pipelines, security practices, and monitoring for modern software delivery.

• GetSmarter
• 12 weeks, 12 hours a week
• 29th Apr, 2026
• Paid Course