Lesson 1 / 25

Introduction to JUnit 5 & Mockito

Apply foundations 1 in JUnit 5 & Mockito.

Understand Introduction to JUnit 5 & Mockito

In JUnit 5 & Mockito, use foundations 1 to connect the problem, constraints, and measurable outcome before selecting an approach.

Practise the workflow

Start small, verify one result, and record what the evidence changes.

A four-stage learning workflow.
Figure 1.1 — Understand, act, verify, improve.

A useful comparison

Think of this as a route plan: each step should lead to a checked destination.

Check your reasoning.

Quick check: What should come before choosing an approach?

  • A clear goal and constraints.
  • An unverified copy.
  • No measurement.
Answer

A clear goal and constraints. — Evidence makes a decision reviewable.