What are the Different Levels of Software Testing?

Today’s world of technology is completely dominated by machines, and their behavior is controlled by the software powering it. Software testing provides the solution to all our worries about machines behaving the exact way we want them to. This article will provide in-depth knowledge about the different Levels of Software Testing in the following sequence:

• Types of Testing
• Levels of Software Testing
  • Unit Testing
  • Integration Testing
  • System Testing
  • Acceptance Testing

Let’s begin!

Types of Testing

There is a provision of two types of software testing:

1. Functional Testing
2. Non-functional Testing

I will give you a detailed explanation of both of them one by one. Starting with Functional Testing:

Functional Testing

Have you heard about black box testing? Well, it’s the process of inserting the input and scrutinizing the output, to check if we have got the required output or not. Functionality test involves the following functions:

• Determine the functionality of the project.
• Creation of a test data as per the  requirements of the application
• Check for output depending on the data being tested in your application.
• Checking the scenarios by testing and then executing those test cases
• Compare the actual as well as expected output depending on the executed tests

Non-Functional Testing

Non-functional testing deals with testing any product from the requirement point of view that is non-functional in type. The different categories are:

1. User interface
2. Performance
3. Security

Moving further, let me explain to you the levels of software testing.

Levels of Software Testing

There are four levels of software testing, namely:

Let’s understand each one of them.

Unit Testing:

The concept is to scrutinize every part of the program through this testing. Individual sections or parts of the program are tested to check whether they are fulfilling the requirements or not.

Integration Testing: 

The main idea here is to check the errors while interacting between the units of the program. In this software testing level, individual parts need to combine as well as test individually or more precisely as a single cluster. 

There are two kinds of Integration Testing:

• Top-Down Testing

In this testing, the highest-level modules are tested first and, lower-level modules are tested after that.

• Bottom-up Testing

Here, the lower-level modules are tested and thereafter, the higher-level modules.

System Testing: 

System testing tests the project as a whole. System testing is the first step in the Software Development Life Cycle.

The basic idea behind this testing is to check if the output has accomplished the goal of meeting the requirements of the project. In this software testing level, the whole software or the project that you created is tested. 

Acceptance Testing: 

At this software testing level, a system is tested for acceptability. The test checks if the system is compliant with respect to the business requirement. This is the most important type of testing, as it is conducted by the Quality Assurance Team who will check whether the application meets the specifications and satisfies the client’s requirement.

With this I have reached towards the end of my blog. I hope the above-mentioned content added value to your Java knowledge. We will keep exploring the Java world. Stay tuned!

Now with this, we come to an end to this “Levels of Software Testing” blog. I hope you guys enjoyed this article and understood what are the different levels of software testing.

Now that you have understood testing, check out the Software Testing Fundamentals Course by Edureka. This course is designed to introduce you to the complete software testing life-cycle. You will be learning different levels of testing, test environment setup, test case design technique, test data creation, test execution, bug reporting, CI/CD pipeline in DevOps, and other essential concepts of software testing. 

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