This document contains detailed notes from Lecture 12 of the CO2401 course on Software Development. The lecture focuses on advanced unit testing techniques, specifically the use of mocking frameworks to simulate and test interactions between a unit of code and its dependencies.
Recap: Terminology and Principles Related to Mocking Frameworks
1. Mocking:
o Mock Objects: Simulated objects that mimic the behavior of real
objects in controlled ways, used to test the interactions of a unit
with its dependencies.
o Purpose: Helps isolate the unit under test by simulating the
behavior of its dependencies, ensuring the test focuses solely on
the unit itself.
2. Why Use Mocking Frameworks?
o Efficiency: Hand-coding stubs and mocks is time-consuming and
prone to errors. Mocking frameworks automate the creation of fake
objects, making tests easier to write, read, and maintain.
o Popular Frameworks: MOQ, FakeItEasy, NSubstitute. NSubstitute
is highlighted for its focus on test readability and familiar syntax.
Interaction Testing
1. Types of Testing in Unit Tests:
o Value-Based Testing: Validates the return values of a method.
o State-Based Testing: Ensures that the internal state of the unit
under test changes as expected.
o Interaction Testing: Verifies that the unit under test interacts
correctly with other objects by calling their methods.
2. When to Use Interaction Testing:
o Interaction testing is essential when the primary outcome of a unit
of work is calling a method on another object. Mock objects help
verify that these interactions occur as expected.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BpoBpo. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $4.50. You're not tied to anything after your purchase.
