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Course Introduction and Outcomes

Welcome, Expectations, and How We Will Learn

Course Goals and Production Readiness Criteria

Foundations of Unit Testing Strategy for Production

Designing a Beginner-Friendly Unit Testing Strategy

Integrating Unit Tests into the Development Workflow and CI Pipeline

Breaking Dependencies to Make Code Testable

Understanding Dependencies and When to Use Stubs

Stubbing and Injection Patterns for Beginners

Hands-On: Applying Functional, Modular, and Object-Oriented Injection

Interaction Testing with Mocks for Production Scenarios

When to Prefer Mocks Over Stubs and How to Use Them Safely

Practical Mocking Across Styles

Assessments: Knowledge Checks and Practice

Quiz: Fundamentals of Unit Testing Strategy

Quiz: Workflow and CI Integration

Quiz: Dependencies, Stubs, and Injection Basics

Quiz: Functional and Object-Oriented Injection Techniques

Quiz: Interaction Testing with Mocks

Final Survey

Course Feedback Survey

Ship reliable code faster with Production-Ready Unit Testing Foundations with Dependency Injection Techniques. This beginner-friendly, language-agnostic course teaches you how to design unit tests that are fast, deterministic, and meaningful in real-world production environments. You’ll learn how to define test boundaries, isolate dependencies like time, I/O, and randomness, and adopt injection patterns that make code testable without compromising behavior. We’ll map practical testing strategies to your development workflow, from local runs and pre-commit hooks to CI pipelines with caching, parallelism, and quality gates. Through hands-on labs, you’ll refactor for testability using functional, modular, and object-oriented approaches; use stubs to control state and speed; and apply mocks safely to verify critical interactions without creating brittle tests. By the end, you’ll understand how unit tests fit alongside integration, end-to-end, and exploratory testing, and how to set production-readiness criteria such as risk-based coverage and test duration budgets. Whether you’re new to unit testing or formalizing your practice, you’ll leave with patterns, checklists, and a workflow you can apply immediately to any tech stack.

Topic 2 - Production-Ready Unit Testing Foundations with Dependency Injection Techniques

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            <p>Modern software teams cannot claim production readiness without a disciplined approach to unit testing. This course builds a rigorous foundation for creating fast, deterministic, and maintainable unit tests, emphasizing dependency management and practical dependency injection techniques. You will learn how unit tests anchor risk-based quality gates, complement integration and end-to-end testing, and deliver actionable feedback in local and CI environments. From core terminology—units, fixtures, assertions, determinism—to testing styles such as AAA, Given-When-Then, and table-driven tests, the curriculum focuses on real-world trade-offs that keep tests stable, meaningful, and aligned with business-critical paths.</p>

<p>We begin by clarifying expectations, prerequisites, and the course flow, including how to use the examples and labs in a language-agnostic way with a simple local setup checklist. The strategy modules then guide you to define boundaries, isolate behavior, and structure suites by feature and risk while setting pragmatic coverage targets and introducing mutation testing at a conceptual level. You will integrate tests into daily development with fast local runs, pre-commit hooks, and CI pipelines that enforce quality gates, parallelize execution, and surface artifacts such as JUnit XML and coverage reports. A substantial portion of the course tackles breaking dependencies—time, I/O, randomness, environment, network, and stateful globals—using stubs and injection patterns (parameter, functional, modular, constructor/interface) so your tests remain deterministic and fast. Finally, you will learn when to prefer mocks over stubs for interaction testing, avoid brittle verifications, and apply mocking consistently across functional, modular, and object-oriented designs. Knowledge checks and quizzes throughout reinforce key concepts, ensuring you can apply these techniques confidently to production-grade systems.</p>
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