Home
/
Services
/
Functional application testing

Functional application testing

An experienced team of QA engineers

  • Product verification for all stated functions
  • Testing the API, database, interface, and business logic
  • Analysis of compliance with requirements and specifications
  • Working out positive, negative and boundary scenarios
  • Use of manual and automated checks
  • Detailed reporting and recommendations for product improvement
Discuss the project
50+
completed projects
5,7%
staff turnover
до 28%
budget savings on development

Advantages of functional testing of mobile and web applications

For the business owner
For the business owner
  • Guarantee that the product performs all the stated functions
  • Reducing the risk of financial losses due to critical errors
  • Rapid detection and elimination of defects
  • Improving the stability and quality of service



Find out the cost and timing of functional testing for

Get a KP
For the product owner
For the product owner
  • A stable product for users
  • Optimization of business logic and user scenarios
  • Lower costs for bug fixes after release
  • Uninterrupted operation on all supported devices and platforms



Order functional testing of the application

Request a test plan
For the team leader
For the team leader
  • Full test coverage from API to user interface
  • Scenarios adapted to the specifics of the project
  • Autotests to speed up the release cycle
  • Scalable testing approach for future product versions



Launch onboarding

Request a CV

The cost of software testing

3-4 weeks
from 1800 ₽/hour
projects starting from 50 thousand rubles.
LighTech The warranty period is 2 weeks
LighTech Comprehensive audit
LighTech The optimal team for the task
LighTech Support and mentoring from experts in related fields
LighTech Transparent process — TK work, reporting, tracking, timing control

The LighTech Team

Project managers
Product managers
DevOps engineers
Architects
Frontend Developers
Backend Developers
Mobile Developers
Flutter-
iOS Developers-Developers
Android Developers
QA Engineers
UX/UI specialists
Scrum Masters
Analysts
Designers
Marketers
Copywriters
Learn more about the team

Tell us about your project.

And we will offer you the optimal solution based on our experience, create a roadmap for the project and estimate the time and cost of development.
Discuss the project
LighTech

Our advantages

Scrum.org certification
Scrum.org certification

Our team is certified according to international standards Scrum.org . We apply the best practices of agile development to your business.

The Open-Source approach
The Open-Source approach

Active participation in open-source projects allows you to create reliable solutions using proven technologies and keep up with the times. 

The component approach
The component approach

Our solutions are created from ready-made tested components. This speeds up development and scaling, as well as making further support easier.

Worked commands
Worked commands

Our experts with extensive experience in collaboration guarantee efficiency, coherence and quality of the final product.

Experience in BPMS, CRM, and Highload development
Experience in BPMS, CRM, and Highload development

We are not new to complex projects. We have extensive experience in creating BPMS, CRM and high-load systems.

Accredited IT company
Accredited IT company

Proven professional qualifications, reliability and compliance with advanced industry standards.

Technology stack

We will help you create a solution that will meet the needs of your business. Our team uses proven and up-to-date tools, develops digital products for stable and efficient work for many years to come. 

Go
A compiled programming language with a simple syntax, focused on high performance and parallel computing.
Python
A powerful and flexible programming language that provides fast development and high performance. It is ideal for creating complex business logic and processing large amounts of data.
RDBMS
A relational database management system that allows you to store and process data in the form of linked tables
AWS
Amazon cloud platform, which provides a wide range of services for computing, data storage, and application development
Celery
Asynchronous task queue for Python, which allows you to perform deferred operations and distribute the load
Docker
A platform for packaging, distributing, and running applications in isolated containers
Django
High-level Python framework for fast development of secure and scalable web applications
DRF
Django REST Framework, a Django extension for creating APIs with REST architecture support
FastAPI
Modern Python framework for building high-performance APIs with automatic documentation
React
A library for developing interactive user interfaces. Allows you to create fast and scalable web applications with excellent performance.
Angular
A progressive framework for creating dynamic and responsive user interfaces. Guarantees smooth operation of your portal on any devices.
Vue
A progressive JavaScript framework for creating user interfaces with a reactive data update system
Next.js
React is a framework with support for server-side rendering for creating optimized web applications.
Nuxt
A framework for Vue.js, which simplifies the development of universal and statically generated applications
Dart
An object-oriented programming language from Google used for developing mobile, web, and desktop applications.
Flutter
A powerful framework for fast and efficient development, ideal for creating cross-platform applications. It provides high performance and flexibility, enables efficient implementation of complex business logic, and provides high-quality user interfaces.
Clean Architecture
An architectural approach to software development that focuses on separation of responsibility and independence from external frameworks
Swift
A modern programming language from Apple for developing applications for iOS, macOS and other platforms of the company
Kotlin
A statically typed programming language from JetBrains, compatible with Java, used for developing Android applications and server systems

They trust us.

Bayer
Bronevik
Stabilafonder
X5Group
W
Lean Apps

The stages of functional application testing

1

Design and preparation

At the first stage, we analyze the project, form test cases, a checklist for testing, select the optimal framework (Selenium, Appium or PyTest) and develop a strategy that takes into account the specifics of the product.

2

Test development and automation

We write and automate test scenarios and set up their regular launch. We keep the tests up-to-date with product changes and fix the defects found.

3

Performing functional checks

We comprehensively test the key functions of the product according to the requirements, identify deviations in operation.

4

Analysis and support

We provide detailed reports with problems found, recommendations for their correction, and an assessment of functionality compliance with requirements. We keep the test database up-to-date.

What is functional testing?

Functional testing is the foundation of software quality, without which stable system operation is impossible. The main purpose of this type of testing is to check whether the system works exactly as intended and described in the requirements and specifications. Simply put, we check what the product does.:

  • Are its main tasks and business logic being performed correctly?
     
  • Is the data being processed correctly?
     
  • Does the user interface (UI) respond adequately to actions?
     
  • Do the system components interact correctly with each other and with external services (APIs, databases)?

Each test is based on documented business requirements and functional specifications from the customer.
 

Functional testing Examples

  • User Interface (UI): Clicking the "Add to Cart" button actually adds an item. The email input field accepts only valid addresses.
     
  • API: Sending an order creation request returns a valid response with the order ID. A request to the API for receiving user data returns the correct information.
     
  • Databases: After the user registers, his data is correctly saved in the database. The discount calculation in the order is correctly reflected in the corresponding table.
     
  • Business logic: Using a promo code reduces the total amount of the order by exactly the specified percentage. When the product status changes to "Shipped", its quantity is deducted from the warehouse.

There is a concept of non-functional testing. It focuses on how the system works: how fast it is (for example, authorization time is less than 2 seconds), user-friendly (usability/UX), stable under load, secure and reliable. This testing evaluates the quality characteristics of the product, ensuring its effectiveness and comfort of use in real conditions.

Order testing of the website and mobile application

Discuss the project
LighTech

Frequently Asked questions about functional testing

What does functional testing check?
What is the difference between functional and non-functional testing?
Is it necessary to automate functional tests?
What are the test cases based on?
Do I need functional testing for MVP?
How often do I need to do functional testing?

What will you get after completing the project

Get artifacts from the project
Open
Stable product
Stable product
A set of test documentation
A set of test documentation
Closing documents
Closing documents
Flexible environment for running tests
Flexible environment for running tests
Support
Support

Projects that we have implemented

Tell us about your project
Name
Contact
Message
Attach file +
Request to get files
Name
Send files
Message
Thanks!
Your request has been sent
After processing, our manager will contact you