All about creating test scenarios
Tags: devops, testing, webdev, mobile
Published: 2023-08-28 15:06:03

In the vast landscape of an application, each feature is like a landmark. The goal is to make sure we visit each of these landmarks to ensure they are as expected. That's where the test scenarios come in. They provide a high-level view, a roadmap of all the features (landmarks) that need to be tested. Each test scenario can be thought of as a potential route that a user might take through the software or application. This makes them an invaluable tool for ensuring all functionalities are checked and validated.

But why is the test scenario so vital? Without test scenarios, you could miss testing some features, overlook potential user journeys, or, in worst-case scenarios, let bugs slip into the production environment. This blog covers the importance of writing test scenarios, its comparison with test scripts and cases, and a detailed example of creating test scenarios for [testing an app with HeadSpin](https://www.headspin.io/solutions/mobile-app-testing).

**Definition of test scenarios**

In the field of software testing, a test scenario holds a significant position. But what exactly is it?

Test scenarios are high-level descriptions in the software testing process that outline possible user paths or activities that can take place on the application or system under test. They provide a generalized view of what should be tested without detailing the specific test steps. Each Test scenario encapsulates a sequence of actions a user may take, with the goal of validating the behavior of a feature or functionality. Essentially, they define 'what' to test, ensuring that all possible user interactions with the software are covered and validated.

**Why should you create test scenarios?**

Creating test scenarios is akin to drawing out a detailed map or itinerary for this journey through the software. By outlining all possible paths a user might take, test scenarios make sure we test every functionality of the system, ensuring nothing is overlooked. 

Creating test scenarios is a critical step in the software testing process for several reasons:

**1. Ensures comprehensive coverage:** Test scenarios ensure that all functionalities of the system are tested. They provide a roadmap that covers all possible user interactions with the software.

**2. Improves efficiency:** They help testers identify the maximum number of test cases with minimal overlap, making the testing process more efficient.

**3. Enhances clarity and organization:** Test scenarios provide a clear understanding of the application flow and business requirements, aiding in better organization and planning of the testing process.

**4. Facilitates team collaboration:** They serve as a communication tool between testers, developers, and stakeholders, facilitating a better understanding of the system’s functionalities and the scope of testing.

**5. Helps in risk mitigation:** With well-defined test scenarios, potential risks can be identified early, and mitigation plans can be put in place, leading to a high-quality, reliable software product.

In essence, creating test scenarios is like plotting your journey before starting a road trip. They guide you on what path to take, ensuring no important features are missed, ultimately leading to a robust and thoroughly tested software application.

**Decoding testing terminology: Test scripts vs. test scenarios vs. test cases**

In the world of software testing, terminology like test script, test scenario, and test case might seem interchangeable, but they represent distinct elements in the testing process. Let's break down what each term means and identify their differences.

**1. Test script**

A test script refers to a set of instructions or a program written in a scripting language that is executed to perform a specific test on a software application. It includes the detailed steps, data, and expected outcomes necessary to automate testing, particularly in regression or performance testing.

**Key features:**

-     Often used for automated testing.
-     It is a written code that follows a step-by-step process.
-     Contains both actions to perform and expected results.

**2. Test scenario**

A test scenario refers to a high-level description of what needs to be tested within the system. It outlines a specific pathway a user might take and provides a generalized view of functionality or feature to be tested without diving into detailed steps.

**Key features:**

-     High-level description, often a one-liner that encapsulates a user journey.
-     Focuses on 'what' to test rather than 'how' to test.
-     Guides the creation of multiple test cases.

**3. Test case**

A test case is a set of specific conditions or variables under which a tester will evaluate whether a system under test satisfies requirements or works correctly. It contains detailed steps, data inputs, preconditions, postconditions, and expected results to guide manual testing.

**Key features:**

-     Contains detailed instructions for the execution of a particular testing scenario.
-     Involves specific inputs, preconditions, expected outcomes, and postconditions.
-     Can be both manual and automated.

**Comparison and key differences**

- Test script: Primarily used in automated testing, it is a coded set of instructions.
- Test scenario: A high-level outline of functionalities guiding what to test.
- Test case: A detailed guide for manual or automated testing, including step-by-step instructions and expected outcomes.

**Determining when to use test scenarios, test cases, and test scripts?**

In the software testing process, understanding when to use test scenarios, test cases, and test scripts is essential to ensure effective and efficient testing. Here's an overview of when each one is most relevant:

**Test scenarios**

Test scenarios are primarily used during the planning phase of the testing process. They are developed after the testing team has a clear understanding of the software's functionalities and user interactions. Their primary function is to ensure that all possible user journeys and functionalities are considered and covered in the testing process.

**Test case**

Once the test scenarios are defined, the next step is to create detailed test cases for each scenario. A test case provides a set of specific conditions or variables under which a tester determines whether the system under test satisfies the requirements and works correctly. It includes step-by-step procedures to follow, data to be inputted, and the expected outcome. These are used during the execution phase of the testing process.

**Test scripts**

Test scripts, on the other hand, are most commonly used in automated testing. They are essentially coded instructions for automated tests, written in a programming or scripting language that a testing tool can interpret and execute. Test scripts are primarily used in cases where certain tests are repeated frequently (regression testing) or require a large amount of data to be validated (performance testing).

**Some peculiarities associated with creating test scenarios**

-     Test scenarios cover a broad scope, ensuring a comprehensive view of the software's functionality.
-     They offer a user-centric perspective, focusing on different ways users might interact with the software.
-     Test scenarios help simplify complex systems by breaking down the system into manageable chunks, each focusing on a specific user journey or functionality.
-     They guide the creation of test cases, with each scenario having multiple related test cases.
-     Test scenarios can assist in prioritizing testing activities by assigning higher priorities to scenarios associated with critical functionalities.
-     Being high-level and less technical than test cases or scripts, test scenarios facilitate effective communication with stakeholders, including project managers, developers, and clients.

**How to create a test scenario? Using HeadSpin for testing an application**

HeadSpin offers a data science driven Platform that enables testers and QA teams to test their application securely and remotely across 90+ locations worldwide. With its unique capabilities, HeadSpin helps capture custom KPIs and pinpoint high-priority issues that can degrade user experiences. Following is a section for a test scenario example. 

Let’s consider an example of testing a gaming application with HeadSpin.

**1. User registration:** Test the user's ability to register a new account on the app, including inputting their details, setting a password, and receiving a confirmation email or message.
user registration

**2. User login:** Test the user's ability to log in to their account with the correct username and password, as well as the system's response to incorrect login details.
user login

**3. Game loading:** Test if the game loads correctly when the user selects it, including loading all game assets and any necessary data.

**4. Gameplay:** Test the core game mechanics, such as character movement, combat system (if applicable), game progression, score updates, and game rules adherence.
Game play

**5. Saving and loading game progress:** Test if the game correctly saves the player's progress and if the player can load saved progress when they reopen the app.
saving nad loading game progress

**6. In-app purchases:** Test the functionality of making in-app purchases, if applicable, including transaction processing and receipt of purchased items.
in-app purchases

**7. Performance:** Test the game's performance, including loading times, frame rates, and responsiveness, especially under high stress or with long periods of use.
performance

**8. Compatibility:** Test the game's compatibility with different device models, operating systems, and screen sizes.
compatibility

**Conclusion**

Creating test scenarios is not merely a step in the software testing process; it's a strategic approach that underpins quality assurance. By meticulously crafting scenarios that mirror real-world usage, testers can discover unseen flaws and enhance software reliability. From defining objectives and understanding user behaviors to collaborating with cross-functional teams, the art of creating test scenarios necessitates a blend of technical expertise and creative thinking. Embracing these practices not only ensures that the final product aligns with user expectations but also fosters a culture of excellence within the development team. As we advance into an era where software plays an ever more critical role in our daily lives, the ability to generate effective test scenarios will remain a pivotal skill, strengthening the bond between developers, testers, and end-users. The investment in creating comprehensive and meaningful test scenarios pays off in the form of robust, resilient, and user-friendly software, elevating the user experience to new heights.

_**Source:** https://www.headspin.io/blog/test-scenarios-comprehensive-guide_