Difference Between Verification and Validation In Flutter
Hi everyone! today we learn about Verification and Validation In Flutter. Verification and validation to assure that a software system meets a user’s needs. Verification: “Are we building the product right?” The software should conform to its specification. Validation: “Are we building the right product?” The software should do what the user requires.
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Table Of Contents::
What is Verification in Software Testing?
Advantages of Verification Testing
When to use Verification Testing
What is Validation in Software Testing?
Advantages of Validation Testing
When to use Validation Testing;
Example of Verification and Validation
What is Verification in Software Testing?
Verification in Software Testing is a process of checking documents, design, code, and program to check if the software has been built according to the requirements or not.
The main goal of the verification process is to ensure the quality of software application, design, architecture, etc. The verification process involves activities like reviews, walk-throughs, and inspections.
Advantages of Verification Testing:
- Early and frequent verification reduces the number of bugs and defects that may show up in later stages.
- By verifying at each stage, devs, product managers, and stakeholders can get more insight into what the product may need to be developed better in the coming stages.
- Even if they can’t solve all bugs immediately, verifying helps QAs estimate the kind of issues that might emerge and help them better prepare to handle those when they appear.
- Verification helps keep software closely aligned with customers and business requirements at every stage. This ensures that devs have to put in less unnecessary work as development continues.
When to use Verification Testing:
Verification tests must be run at every stage of development before any feature is implemented.
For example, let’s consider a button labeled “Add to Cart”. Before starting with creating this button, verification tests would look through all relevant requirements previously decided in the ideation and brainstorming phases.
Let’s say the documentation says the button must be black with the lettering in white. It should be no larger than 10mm X 10mm, and it should be constantly visible in the top right corner of every product page of the website. Another button with the same text, color, and dimensions should be placed under every product on the page.
Before creating the button, design and requirements documents must be reviewed, and all necessary specifications must be listed before work begins. This must be done before working on every feature or element on the page so the devs do not miss any guidelines.
What is Validation in Software Testing?
Validation in Software Engineering is a dynamic mechanism of testing and validating if the software product meets the exact needs of the customer or not.
The process helps to ensure that the software fulfills the desired use in an appropriate environment. The validation process involves activities like unit testing, integration testing, system testing, and user acceptance testing.
Advantages of Validation Testing:
- Any bugs missed during verification will be detected while running validation tests.
- If specifications were incorrect and inadequate from the beginning, validation tests would reveal their inefficacy. Teams will have to spend time and effort fixing them, but it will prevent a bad product from hitting the market.
- Validation tests ensure that the product matches and adheres to customer demands, preferences, and expectations under different conditions (slow connectivity, low battery, etc.)
- These tests are also required to ensure that the software functions flawlessly across different browser-device-OS combinations. In other words, it authenticates software for cross-browser compatibility.
When to use Validation Testing;
Validation tests must be run after every feature or step in the development process is completed. For example, unit tests, a form of validation tests, are run after every unit of code has been created. Integration tests are run after multiple modules have been completed individually and are ready to be combined.
An important element of validation testing is the running of cross-browser testing. QAs must check that every function, feature, and design element appears and functions as expected on different browser-device-os combinations. For example, does the “Add to Cart” button show up and work perfectly on Chrome-Samsung Galaxy A23 and Safari-iPhone X?
KEY DIFFERENCE:
- The verification process includes checking documents, design, code, and program whereasthe Validation process includes testing and validation of the actual product.
- Verification does not involve code execution while Validation involves code execution.
- Verification uses methods like reviews, walkthroughs, inspections, and desk-checking whereas Validation uses methods like black box testing, white box testing, and non-functional testing.
- Verification checks whether the software confirms a specification whereas Validation checks whether the software meets the requirements and expectations.
- Verification finds the bugs early in the development cycle whereas Validation finds the bugs that verification can not catch.
- Comparing validation and verification in software testing, the Verification process targets on software architecture, design, database, etc. while the Validation process targets the actual software product.
- Verification is done by the QA team while Validation is done by the involvement of the testing team with the QA team.
- Comparing Verification vs Validation testing, the Verification process comes before validation whereas the Validation process comes after verification.
Example of Verification and Validation:
Now, let’s take an example to explain verification and validation planning:
- In Software Engineering, consider the following specification for verification testing and validation testing,
A clickable button with name Submet
- Verification would check the design doc and correct the spelling mistake.
- Otherwise, the development team will create a button like
Example of Verification
- So the new specification is
- A clickable button with the name Submit
- Once the code is ready, Validation is done. A Validation test found –
Example of Validation
- Owing to Validation testing, the development team will make the submit button clickable
Conclusion:
Verification and validation are crucial parts of the development life cycle of an embedded system. Verification starts from the requirements analysis stage where design reviews and checklists are used to the validation stage where functional testing and environmental modeling are done.
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