Key Software Testing Techniques You Should Know | iCert Global

Software testing is the act of examining a computer programme or application to determine that it functions as intended and without bugs, which are faults. The process facilitates the detection of faults and their rectification, resulting in the final product being improved and more trustworthy.

We test software to determine whether:

• It does what it's supposed to
• It adheres to the plan or design.
• It repeats the same thing every time.

Why is software testing important?

Skipping testing is not recommended. It could cause problems with the product and for the business. The reasons below are some simple reasons indicating the importance of testing:

1. Saves Money

If we catch errors early in the project, it is less expensive to correct them. That is why it is cheaper and saves time to test at each stage in constructing the software.

2. Keeps It Safe

Comprehensive testing is employed to safeguard users by revealing security vulnerabilities prior to software release. Users desire applications that are both secure and reliable, and this points to the extreme significance of security testing.

3. Enhances Quality

In order to create an amazing product, it must perform just as intended. Testing ensures that everything functions as it should, and the final product can live up to the team's vision.

Testing Techniques You Should Know

Customer Satisfaction

The primary reason for developing any software is to meet customer satisfaction. Testing will help to ensure that the software provides the users with a simple and smooth experience.

Steps of the Software Testing Life Cycle (STLC)

1. Requirement Analysis

This is the first step. The test team reads and understands what they are supposed to test. They know what parts of the software are to be tested.

2. Test Planning

This is an extremely significant step. The team establishes the test strategy, as well as the tools or techniques they are going to use. In the meantime, the test manager provides an estimation of the cost and time required. This step stipulates the purpose and scope of the project.

3. Test Case Development

Once they are prepared, the team creates step-by-step instructions known as test cases. They are blueprints for testing the functionality of the software. They also obtain or prepare the data needed in the testing process. Once test cases have been written, the team members review them to ensure they are correct.

4. Test Environment Setup

Now the team prepares the computers, software, and networks on which they will be testing. This is referred to as the test environment. It contains everything required to execute the test cases.

5. Test Execution

Then the team performs the tests by running the test cases prepared. They test the software functions as designed with its actual behavior, wherever there is any deviation, they mark it as a bug.

6. Test Cycle Closure

This is the final step. The team has a meeting to discuss how testing went. They discuss whether they tested everything, stayed within budget, got done on time, and accomplished all most important goals.

Types of Software Testing

Testing is the most important aspect that makes a software project successful. The category of testing used depends on many factors, including the specific needs of the project, finances, timeline, and the level of expertise of the tester. There are various types of software testing, and it is the responsibility of the tester to choose the appropriate type to test the application correctly.

Functional Testing

Functional Testing verifies if all components of the software work as they are supposed to, according to the defined requirements. Functional testing can be performed manually or by using specific tools for automation.

Types of Functional Testing

Unit Testing

Unit Testing is the process of testing the smallest parts of a program, i.e., the units, to identify whether they work properly or not. In general, each unit is given some inputs and generates an output. The goal is to determine that every part of the system does its job correctly.

Advantages of Unit Testing

Unit testing provides a feeling of assurance when modifying or fixing code. With good tests written and run with every change, you can catch problems early.

Unit testing increases code reusability since it requires the code to be broken down into smaller and more manageable pieces.

It accelerates development, as it takes less time to correct issues identified during unit tests compared to correcting them later under more thorough testing.

Fixing bugs at the unit testing stage is cheaper compared to fixing those found afterwards in the process.

Debugging is a simpler task as well—if a test fails, you simply need to examine the most recent changes.

What is Integration Testing?

Integration testing is the process of bringing a lot of small pieces, or units, of a program together and testing them as a unit. The aim is to find problems that occur when the pieces interact.

Methods for Conducting Integration Testing

Big Bang:

In this process, all the units of the software are tested and all of them are combined. Testers use this strategy when they get the entire software at once.

Top Down:

Here, the testers start with the higher-level components, going down step by step to test the lower components in sequence. This is utilized in the case of top-down software design.

Bottom Up:

This approach starts testing bottom components, leaving the top components to be tested later. It is used where the software is written from scratch.

Sandwich/Hybrid:

This method perfectly blends both Top Down and Bottom Up approaches.

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Conclusion

Software testing is most important because it helps in identifying errors and ensuring that the software performs as desired. There are various types of testing, and each is used to test the different features of the software, thus ensuring it is safe, fast, and reliable. Knowing the different methods of testing prepares individuals to develop better software that meets the requirements of everyone.

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