Software Unit Testing
Build unbreakable code with comprehensive unit tests that catch bugs before they multiply. Achieve 95% code coverage and 85% bug prevention with our proven unit testing strategies.
The Foundation of Quality Software
Code Coverage
Unit testing isn't just about finding bugs—it's about building confidence. Every function, method, and component tested is a guarantee that your code works as designed.
Bugs Caught Early
When unit tests fail, you know exactly what broke and where. Our approach validates business logic, edge cases, and integration points systematically.
ROI on Testing
Our unit testing approach goes beyond basic coverage metrics. The result? Software that's maintainable, refactorable, and reliable at scale.
Test Pyramid Excellence
70% unit tests, 20% integration, 10% E2E - the proven formula for comprehensive coverage with fast feedback loops and maintainable test suites.
Our Unit Testing Process
Identify Units
Isolate testable components, functions, and methods that form your application's building blocks
Write Tests
Create comprehensive test cases covering happy paths, edge cases, and error scenarios
Execute & Validate
Run tests continuously, ensuring all assertions pass and coverage targets are met
Refactor
Improve code quality with confidence, knowing tests will catch any regressions
Beyond Coverage Metrics
True Quality Testing
True quality isn't just about hitting coverage numbers—it's about testing the right things. We focus on meaningful tests that validate critical business logic and edge cases.
Test-Driven Development
Embrace the Red-Green-Refactor cycle. Write failing tests first, implement minimal code to pass, then refactor with confidence. TDD drives better design and fewer bugs.
Comprehensive Coverage
Statement, branch, function, and path coverage - we measure it all. But more importantly, we ensure tests actually validate behavior, not just execute code.
describe('PaymentProcessor', () => {
it('should process valid payment', () => {
const payment = new Payment(100, 'USD');
const result = processor.process(payment);
expect(result.status).toBe('success');
expect(result.transactionId).toBeDefined();
});
});
Unit Testing Best Practices
Test Isolation
Each test runs independently with no shared state. Mock external dependencies and ensure tests can run in any order.
Clear Naming
Test names describe what they test and expected outcomes. Anyone should understand test purpose without reading code.
Fast Execution
Unit tests execute in milliseconds. No database calls, file I/O, or network requests. Speed enables continuous testing.
Single Focus
One test, one assertion. When tests fail, you know exactly what broke. Multiple assertions indicate test is too broad.
Deterministic
Tests produce same results every run. No random data, timestamps, or external factors affecting test outcomes.
Maintainable
Tests evolve with code. Use helper functions, avoid duplication, and refactor tests alongside production code.
Unit Testing Tools & Frameworks
JavaScript Testing
Jest, Mocha, Jasmine - comprehensive testing for JavaScript applications with mocking and coverage support
Java Testing
JUnit, TestNG, Mockito - enterprise-grade testing frameworks for Java applications
Python Testing
PyTest, unittest - powerful testing tools for Python with fixtures and parameterization
.NET Testing
NUnit, xUnit, MSTest - comprehensive testing solutions for .NET applications
Ruby Testing
RSpec, MiniTest - behavior-driven testing frameworks for Ruby applications
PHP Testing
PHPUnit, Codeception - full-featured testing frameworks for PHP applications
Build Bulletproof Software with Unit Testing
Still not convinced?
Hear it straight from BetterQA’s clients.
Address: 28-30 Anton Pann street, Cluj-Napoca 400053, Romania, RO39687318, J12/3363/2018
Phone number: +40 751 289 399
Better Quality Assurance. All Rights Reserved. Copyright 2024