What is Monkey Testing? Benefits, Disadvantages & Types

Infotek Solutions
5 min readDec 1, 2023

Monkey testing is a type of testing that involves dealing with random inputs.

Testing software is crucial for ensuring the viability and efficiency of applications. The traditional testing approach emphasizes a well-organized and planned approach, but a novel technique known as monkey testing is gaining traction. Monkey testing involves giving random and unplanned input to software systems to find hidden problems and weaknesses.

This technique deviates from predetermined test cases or strategies and relies solely on the tester’s emotional state and intuitive intuition.

Why Monkey in Monkey Testing?

The concept of monkey testing stems from the idea that monkeys randomly press keys on a keyboard, imitating the unpredictable and haphazard nature of their actions. The analogy is employed to describe the random and unplanned testing approach employed by this method, in which the software system is subjected to arbitrary and unexpected outcomes without any predetermined testing scenarios or predetermined procedures.

The term ‘monkey testing’ is employed to emphasize the element of disorder and unpredictability inherent in the procedure. Like monkeys randomly tapping keys on a keyboard, monkey testing involves testing the software against a variety of random events, user inputs, or simulated scenarios to see how it performs and to uncover any potential flaws that may not have been anticipated or anticipated in conventional testing methods.

By utilizing a randomized and exploratory methodology, monkey testing aims to uncover concealed bugs, vulnerabilities, and performance issues that may remain undetected through more structured testing methodologies. The term “monkey testing” serves to convey the notion of introducing disorder into the system in order to comprehensively assess its resilience and robustness.

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Benefits of Monkey Testing:

Uncovering Unanticipated Bugs:
Monkey testing is a highly efficient method for identifying defects that may not be detected through conventional testing methods. By giving random information, it explores new areas in the software and increases the chance of finding mistakes or weaknesses that are not expected.

Improved Application Resilience:
Monkey testing helps assess the resilience and robustness of the application by intentionally bombarding it with random inputs. This shows how well the software can handle unexpected situations like random user actions or changes in the environment. This helps the developers make the application more stable.

Enhancing User Experience:
Monkey testing helps to create random input scenarios that look like real-world usage patterns. By testing the software in different situations, developers learn how it behaves when users use it. This helps them make the user experience better.

Identifying Memory Leaks and Performance Issues:
Monkey testing uncovers memory leaks, performance hiccups, and resource utilization issues by continuously delivering unstructured data. This information helps developers make the software work better and use less memory, which makes the program work better.

Cost and Time Efficiency:
Monkey testing has the potential to be a cost-effective approach to identify crucial defects at an early stage of the development process. The setup process is minimally invasive and can operate autonomously, thereby enabling testers to concentrate on other crucial testing activities. Early detection and remediation of defects during the development process can significantly reduce both the overall expenses and the time-to-market.

Disadvantages of Monkey Testing:

Lack of Test Coverage:
Monkey testing may not provide comprehensive test coverage because of its random nature. It is not capable of substituting structured testing methodologies, such as functional or regression testing, which are specifically designed to address specific scenarios. Therefore, its important to combine monkey testing with other testing methods to make sure everything is tested thoroughly.

Difficulty in Reproducing Issues:
Monkey testing involves inputs that are random and unstructured, so it may be hard to reproduce issues that happen during testing. For developers to understand and fix the problems effectively, it is essential to have reproducibility. It is imperative to implement appropriate logging and recording mechanisms to facilitate issue replication and debugging.

Potential False Positives and Negatives:
Monkey testing relies on randomness, which makes it susceptible to generating false positives or false negatives. To avoid unnecessary rework or overlooking critical issues, testers should exercise caution and carefully analyze the results.

Types of monkey testing

1. Dumb Monkey Testing

In this particular type of testing, the tester lacks knowledge of the application or workflow. The tester is instructed to test it with random flaws, which may aid in naively identifying significant flaws. The tester is not required to possess any technical expertise and must evaluate the application in accordance with their comprehension, ensuring that no incorrect data is entered.

2. Smart Monkey Testing

The main objective is to surpass the application with invalid inputs and tests. The primary goal is to conquer the application and uncover any flaws that may arise. This particular technique proves to be advantageous for conducting load/stress testing.

3. Brilliant Monkey Testing

This method is one step ahead of smart monkey testing. The tester knows everything about the application and is specifically chosen because they know the application well and can even find bugs that might be found in the future. The tester is familiar with the item, enabling them to conduct evaluations from the perspective of the end user.

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