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Mocks and Stubs using Mockito

Step by step guide to Mocks, Stubs, and Mockito. Includes hands-on exercises for each topic

  Abhinav Manchanda

   Unit Testing, IT & Software

  Language - English

   Published on 01/2022

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Description

Mocks are a special case objects that simulate real objects for testing. Mocks help you write Unit Test for complex, interconnected components, modules, and services. 

This course teaches you everything you need to know about testing complex services with test doubles (Mocks and Stubs) in a way that is simple to understand. The course consitutes of videos, hands-on exercises and scenarios that guide you in the right direction and help you learn by doing things on your own.

Lectures are focused on building your knowledge intuitivley so that it's easier to transition this knowledge into real world solutions.

Course covers in-depth exploration of various topics like what are test doubles, mocks, stubs, the mockito library, testing errors with mocks and is designed keeping in mind real world applications of Mocks.

These tools and techniques are used by large organisations to test production grade applications with over a million lines of code!

About the teaching Style: 

This course uses Socratic learning techniques, where you learn by actually solving coding assignments. It is structured in a way that you can do the first few chapters, and gain enough practical knowledge to apply it on a project. The coding assignments give you the confidence to directly use this knowledge during your job or your college.

If you already know a bit of Mocks and Stubs: 

If you already know a bit about mocks and stubs, you might still benefit from this course. Just do the exercises, and watch the solution videos to verify. Make sure you watch the last video on next steps.

What Will I Get ?

  • Why do we need test doubles (mocks and stubs)?
  • Understand how the behaviour of an object can be verified using mocks
  • Understand how an interaction with an object can be simulated using stubs
  • Learn how to create mocks using Mockito
  • Test errors and exception scenarios using Mocks and Stubs

Requirements

  • Hands-on programming experience
  • Working knowledge of a unit testing framework such as JUnit or Jest
  • Experience writing unit tests for functions of intermediate complexity
  • Working knowledge of git, and a GitHub account
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