How to write a good test case in Software Testing

Software Testing is a process of executing the application with the intent of finding the software bugs to ensure that the product is defect free in order to produce the quality product. It is used to evaluate the functionality of a software application to find whether the developed software meets the specified requirements or not.

The main purpose of a Test case is to ensure if different features within an application are working as expected. It helps tester to validate if the software is free of defects and if it is working as per the expectations of the end users.

While writing Good and effective Test Cases, certain steps are to be followed.

1. Identifying the Scope And Purpose Of Testing Before writing effective test cases we need to identify the testable requirements. We need to understand the purpose of testing and must understand the features and user requirements.

2. Defining how To perform Testing Activities Defining the effect test scenarios and a better understanding of functional requirements of an application is mandatory. We must know about what all operations can be used, so that the test scenarios, test cases can be written based on the guidelines.

3. Identify Non-Functional Requirements. Along with the functional requirements, the non-functional requirements are equally important. Basically in non-functional requirements criterion like Operating system, hardware requirements, security features are to be considered and also additional prerequisites required for testing like test data preparation.

4.Implement Testing Techniques – Positive And Negative Test Cases While writing test cases few test case design methods should be used like equivalence classes portioning, boundary value analysis, normal and abnormal conditions. It should also consider negative testing, failure conditions and error handling which could help to discover most probable defects in the code.

It is essential that testcases both valid and Invalid testcases are to be checked before releasing software Project to the End User.

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