Monkey testing

Monkey testing image

What is monkey testing?

Monkey testing is a software testing technique where you throw random inputs at an application to see if it breaks. Testers use this unscripted, messy approach to find crashes, bugs, and edge cases that planned testing might miss. It's great at catching stability issues when users do unexpected things.

Do you have any examples of monkey testing?

In practice, monkey testing might look like:
  • Rapidly tapping random areas on a mobile screen
  • Typing nonsense into form fields
  • Jumping frantically between features
  • Using tools that generate thousands of random actions
  • Pressing multiple buttons at once
  • Entering extreme values in number fields

Why is monkey testing important?

Monkey testing finds vulnerabilities that careful testing misses. By copying unpredictable user behavior, it puts your application through stress it wasn't designed for. This helps catch memory leaks, crashes, and stability problems before real users find them. It's a tough but useful way to strengthen your software against real-world chaos.

What are the challenges of monkey testing?

The randomness that makes monkey testing effective also creates problems. When you find a bug, recreating it can be nearly impossible without good logs. Coverage is uneven—you might hit one area repeatedly while totally missing others. For best results, pair monkey testing with focused exploratory testing and solid test logs to record exactly 

MoT Professional Membership image
For the advancement of software testing and quality engineering
Explore MoT
Software Quality in the AI-First Landscape image
Thu, 24 Apr
The Al wave is here, and QA teams are at a turning point
MoT Software Testing Essentials Certificate image
Boost your career in software testing with the MoT Software Testing Essentials Certificate. Learn essential skills, from basic testing techniques to advanced risk analysis, crafted by industry experts. Early access available now at a discounted rate!
Leading with Quality
A one-day educational experience to help business lead with expanding quality engineering and testing practices.
This Week in Testing image
Debrief the week in Testing via a community radio show hosted by Simon Tomes and members of the community
Subscribe to our newsletter
We'll keep you up to date on all the testing trends.