Positive Testing - Software Testing

In software testing, there are two main approaches: positive testing and negative testing. While negative testing tries to break the software by using incorrect or unexpected inputs, positive testing checks if the software works as expected when given the correct inputs.

The goal of positive testing is to make sure the system performs its intended tasks correctly when valid data is provided. It focuses on ensuring that the core functionality works as it should and that the system meets its requirements.

This article will explore positive testing in detail, explaining its importance in software development, how to perform it, and real-life examples to help you understand its application.

What is Positive Testing

Positive testing, also known as "happy path testing," involves checking if the software works as expected with valid inputs. The main goal is to make sure that the software functions correctly when everything is in the right place.

In positive testing, you:

• Test the system with valid data, as defined by the requirements.
• Check if the application works properly according to the functional specifications.
• Verify if the software follows the intended business logic.

Why is Positive Testing Important?

Positive testing is important for several reasons:

• Ensures Expected Behavior: It makes sure the software works correctly under normal, expected conditions, building confidence that the system will function well in real-world use.
• Validates Core Functionality: Positive testing checks that the key features of the application meet the requirements. This ensures the software is ready for release.
• Increases Customer Satisfaction: When the software performs as expected, users are happier. Positive testing helps meet user expectations.
• Reduces Production Failures: By confirming that the core features work correctly, positive testing lowers the risk of bugs or failures when the software goes live.

When to Perform Positive Testing?

Positive testing should be done at the following stages:

• At the Beginning of Development: After the first version of the app is ready, positive testing ensures the basic features work as expected.
• During Unit and Integration Testing: It’s used in unit and integration testing to check if individual parts of the software and their interactions work properly.
• During Functional Testing: Positive testing is a key part of functional testing to confirm that each feature works as intended.
• After Code Changes or Updates: After making changes to the code, positive testing ensures that everything still works correctly.

Examples of Positive Testing

 Example 1:

Enter Name in Capital Letters: (as Input)
GEEKSFORGEEKS 

The name is given in capital letters. So, here the requirement meets as we expected. Hence the testing is implemented correctly for Positive Testing.

Example 2:

Enter Name in Capital Letter: (as Input)
geeksforgeeks

The name is given in small letters. So, here the positive testing becomes fail because the entered input is against the requirement and It is considered as negative testing.

Example 3:

 <input type="file"  accept="application/pdf" required>

Condition 1: In this, it accepts only the input as file type. 
Condition 2: It will only accept the file type of pdf only. 

If we input the PDF file type, the requirement will get fulfilled. Hence, it is considered as positive testing.

Execution of Positive Testing

Two different techniques can be used for Positive Testing Validation-

1. Boundary Value Analysis
2. Equivalence Partitioning

Let's discuss these techniques in detail.

1. Boundary Value Analysis

It is related to the valid partition in the input data range. It consists of 2 boundary values - upper bound and lowers bound. It checks the value of the lower boundary and upper boundary to ensure positive validation for test cases.

Example:

<input type="number" min="1" max="4">

Here,
1. The range is between 1-4. 
2. The lower boundary value is 1 and the upper boundary value is 4. 
3. It will get the input from this range only. 
4. It will not accept the numbers from out of the given range. 
5. The range from 1-4 is considered as positive test cases.

Let us consider an example

 A= 1, B= 4. 

The Test Cases that we designed are-
A, A+1, B-1, B.

Test Case 1: Accepts A (i.e 1)
Test Case 2: Accepts A+1 (i.e 1+1 =2)
Test Case 3: Accepts B-1 (i.e 4-1=3)
Test Case 4: Accepts B (i.e 4)

These are all Positive Test Cases.

2. Equivalence Partitioning

In this, the test data is divided into 'n' partitions, and the input data which satisfies the valid data will be considered as positive test cases for the system.

Example: To appear for a particular exam, one should be above 18 years of age and below 33 years of age. This is the condition to appear for the exam. 

Here the valid partition is in the range of 18-32 and Invalid partitions are <=17 and >=33.

Test Case 1:
if(age>=18 && age<=32)
Then "VALID"

Test Case 2:
if(age <=17)
Then "INVALID"

Test Case 3:
if(age >=33)
Then "INVALID"

Here, Test Case 1 is the only positive test case.
In case of positive testing, it will accept only the test case 1 for the system.

Features of Positive Testing

Here is the Features of Positive Testing

• Evaluation of Functionality: Positive testing evaluates the functionality of the software system to ensure that it meets the intended requirements.
• Accurate Results: This testing methodology aims to provide accurate and expected results by providing valid input data.
• Detection of Errors: Positive testing helps detect any errors or defects in the software system and ensures that they are identified and fixed during the testing phase.
• Improved Software Quality: Positive testing plays a crucial role in improving the overall quality of the software system by identifying and fixing issues and defects before the software is released to the end-users.
• Increased Confidence: Positive testing increases the confidence of the development team and the stakeholders that the software system is functioning correctly and as per the intended design.
• Time-Saving: Positive testing is a time-efficient method of testing as it focuses on testing the expected functionalities and features of the software system.

Advantages of Positive Testing

Here is the advantages of Positive Testing

• It takes less time than Negative testing since it covers only valid test cases.
• It verifies that all the requirements are met.
• It makes sure that the software is working perfectly as built.
• Positive Testing saves the efforts of a tester by identifying the wrong build in the initial stages.
• Verifications of the product will be done with a known set of test cases/conditions.
• It helps in improving the code ability.
• Compared to other testing techniques, Positive testing scenarios will have fewer defects count.
• It accurately tests or checks the expected behavior of the application.

Disadvantages of Positive Testing

Here is the Disadvantages of Positive Testing

• Positive Testing will not carry out all possible test cases.
• It will not handle the unexpected error of the product/application.
• Providing a valid set of data for each test case should be given properly else it will not cover the test cases.
• Specifying positive test cases for a large number of data require special attention and learning.
• It does not ensure the accuracy of the product completely.
• It is less efficient as compared to Negative Testing.

Real-World Examples

1. Online Assessment Platform

• Situation: Submitting exam answers online.
• Positive Test Case: Sign in as a student, complete the test questions with appropriate responses, and verify that the answers were submitted successfully and error-free.

2. System for Managing Inventory

• Situation: Including new items in a stock list.
• Positive Test Case: Register for an account on the inventory system, input accurate product information, and verify that the new item has been added to the database of inventory.

3. Mobile App Login

• Situation: Accessing a mobile banking application.
• Positive Test Case: Verify that access to the mobile banking functions is allowed without any problems by entering valid login information, such as your username and password.

Tools and Techniques

Here is the Tools and Techniques which is used in the positive testing.

• Testing for user acceptance (UAT): Enlisting end users to verify the functioning of the program in ideal circumstances.
• Testing Using Models: Creating positive test cases that follow the intended behavior specified in the system specifications by using models.
• Testing Using a Checklist: Creating checklists will help to guarantee that positive test scenarios meet user expectations and corporate needs.
• Risk-Based Testing: Placing affirmative test cases in order of priority according to possible threats to vital system functionality.
• Checklists: Generating positive test scenario checklists based on functional requirements and specifications.
• Continuous Deployment/Continuous Integration (CI/CD): Whenever updates are sent to the version control system, the testing process is automated using program like Jenkins or GitLab CI.

Positive Testing Vs Negative Testing

Below are the differences between positive testing and negative testing-

Conclusion

Positive testing is key to making sure the software works as expected under normal conditions. It checks that the basic features and functions are working correctly, providing a solid foundation for further testing like negative testing and performance testing. By focusing on how the software behaves with valid inputs, positive testing ensures the software is ready for users and meets their needs.

While positive testing is important for confirming the software works in ideal conditions, it should be paired with other testing methods to ensure the software can handle unexpected situations, errors, and edge cases.

Positive Testing in Software Testing

What is Positive Testing?

Positive testing, involves checking if the software works as expected with valid inputs. The main goal is to make sure that the software functions correctly when everything is in the right place.

What is a Positive and Negative test?

Positive Test:
A positive test checks if the software works as expected when given valid or correct inputs. It tests the "happy path," ensuring the software performs its functions correctly under normal, expected conditions. For example, entering the correct username and password to log in to a system.

Negative Test:
A negative test checks if the software can handle incorrect or invalid inputs. It tests how the system behaves when something goes wrong, such as entering the wrong password or an invalid email address. The goal is to ensure the system properly handles errors and does not crash.

What is Positive and Negative unit testing?

Positive testing helps verify that the software works as expected, while negative testing checks for any potential issues or failures. Using both types of tests is important to find both strengths and weaknesses, ensuring the software is reliable and of high quality.