A mock object library for MATLAB.
Updated 4 May 2021

Editor's Note: This file was selected as MATLAB Central Pick of the Week

I initially wrote MockObject to help me unit test code that connected to hardware devices using COM objects. By swapping in a mock for the actual COM object, I could could simulate any device behavior I wanted.

I've since used it to mock HTTP sessions as well, and it's probably useful wherever you want to mock out Something Big.


The MockObject class has two main features:

* It maintains a lookup table of function return values: for any function, for a specific function, or for a specific function with specific arguments
* It maintains a list of what methods were called, along with the arguments used.


See the example subdirectory for an example of how this would work.


MockObject will _probably_ run on any version of MATLAB back to R2008a. It certainly won't work on anything older, as it uses classdef-based classes.

Cite As

Paul Sexton (2024). MockObject (, GitHub. Retrieved .

MATLAB Release Compatibility
Created with R2011a
Compatible with any release
Platform Compatibility
Windows macOS Linux
Find more on Call Web Services from MATLAB Using HTTP in Help Center and MATLAB Answers

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Versions that use the GitHub default branch cannot be downloaded

Version Published Release Notes

Changing file link to point to the github repo.

To view or report issues in this GitHub add-on, visit the GitHub Repository.
To view or report issues in this GitHub add-on, visit the GitHub Repository.