Mastering Test-Driven Development: Designing and Implementing Unit Tests

Mastering Test Driven Development


In a Software Development Environment that is evolving and changing with every new solution, making sure that code meets the high standards of quality and reliability is of fundamental importance. One of the most important stones in building the process is designing unit tests. The focus of this article is on the assessment specifications of “Unit Test Design and Implementation” assignment that will be assessed by the following learning outcomes as they will serve as an orientation to the module.

Assignment Overview

Assignment Title: Designing and realising Unit Tests

Learning Outcomes Assessed:

1. Show masters of the testing of design controls.

2. Make and implement your own automation unit tests.

3. Showcase advanced software development tactics such as agile and test driven methods.

Assignment Details

This assignment solidifies the students complete grasp of the core test-design rules, ability to use a program for automatic unit testing, and skills in implementing the contemporary software development approaches. Students must create and configure unit tests for a specific portion of a software code, thus students display their knowledge about testing approaches and tools.

Related Project Details

Students shall participate in a project like the software development company actually where they experience software development. These will be available to them: tasks to do, codes they can check, and frameworks for testing. The project setting will allow them to use the theoretical concepts learned in the class in an applied way to the real-life situations, and as such, a more in-depth comprehension of software testing or development will be fortified.

Certainly! Let’s now look at an example where we will be creating a function for calculating factorials. The next task can be to write a unit test which will make sure that this function operates as expected.

mastering test driven development

And here are some unit tests for this factorial function

mastering test-driven development

Explanation of the tests

2. test_factorial_of_zero: This test must be used to determine the error of 0 factorial finding. Meanwhile, the factorial definition maintains that 0!= 1.

3. test_factorial_of_positive_number: It ensures whether a specific positive integer (5 in this event, for example) is computed with the correct factorial.

4. test_factorial_of_negative_number: The test where factorial raises for lower values represents the case when factorial is not defined for negative numbers and gives a ValueError.

5. test_factorial_of_large_number: The test is passed if the factorial of the large number by ten (in this case, is multiplied by itself).

For this test, you usually execute a command-line utils, for example pytest. Once you have cmdpall into pytest (pip install pytest), you need to direct your navigating to the folder which has these files to run pytest in order to execute all the tests in the directory.

The unit tests being in place can serve as a kind of safety contrivance, ensuring the accuracy of the factorial function under various conditions, and also help to pull up footprints as the code base increases.

To run these tests, one usually resorts to a utility that operates on the command line and is called pytest. As a following step, you can activate pytest by running the command ‘pip install pytest’ in the directory where your test files are located. From there, you can initiate all the tests in the directory by simply running ‘pytest’ command.

Such unit tests are a providential security cover which checks out if the factorial function behaves correctly in various circumstances and the defects are easily spotted in case of any regressions which may occur as codebase develops.

Academic Expert UK as a Designing Partner: UK academic Experts would be the main strategic ally as they develop and run this task. Placing an emphasis on educational effectiveness and practical course content, Academic Professional experts UK is committed to establishing connections with academic institutions to identify the gaps between the updated industry requirements and academic programs. Through employing their competency in software-development and instruction-training Academic Expert UK provided students with a well-packaged education which lays a strong foundation of the underpinning in the discipline.


The Creating and Setting up Unit Tests project lets them expand the acquired knowledge of test-driven methodology thus enabling them to be ready for the challenges of modern software development. This will be the case with hands-on experience and instrumental lessons that not only meet the assessment requisites but also touch students by providing enlightenment on the significance of unit testing in software quality assurance. The development of students’ practical skills will be unperturbed with Academic Expert UK’s assistant, making this assignment a starting point for future great software developers.

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