Technical Integrity

Verified quality assurance for 2026 calculations

1004/1004

All Tests Passed

Verified for EU-27 2026 legislation

Last verification: 01/08/2026

Test Coverage by Category

129 tests
Fiscal Simulators

Validation of IRS brackets, social security contributions and tax calculations for EU-27.

168 tests
Internationalization

Tests ensuring all 19 languages display correctly across all components.

48 tests
Contact & Forms

Form validation, email integration and user feedback systems.

96 tests
Legal Pages

Terms, Privacy Policy and cookie consent system validation.

152 tests
Comparators

Country comparison logic, ranking systems and advantage calculations.

255 tests
Hooks & Utilities

PDF export, voice input, chat history and notification systems.

97 tests
SEO & Structured Data

Validation of meta titles, Schema.org JSON-LD, hreflang tags and structured data across all 19 languages and 70+ routes.

24 tests
Newsletter System

Validation of newsletter subscription flow, email delivery via Resend, and subscriber management in Supabase.

35 tests
Blog & Content

Validation of 35 blog articles across 19 languages, internal linking, image references and translation parity.

Tests by Category
Test Distribution
Code Coverage Metrics
Statements
98%
Branches
94%
Functions
97%
Lines
99%
Internationalization Validation

All components validated to work correctly across 19 languages with dynamic translation keys.

Testimonials with dynamic i18n keys
Country Comparator validated for 27 EU countries
113 tests for 2026 fiscal data integrity
100% coverage on Cookie Consent Context
PDF export hook fully tested
Web Speech API integration validated
Schema.org JSON-LD validated for 70+ routes across all EU countries
Newsletter subscription system with Resend email delivery verified
35 blog articles verified across 19 languages with translation parity
Testing Technology Stack
Vitest
React Testing Library
Playwright E2E
TypeScript
Zod Validation
@vitest/coverage-v8

Euro Duty is committed to accuracy. Every calculation is backed by automated tests to ensure reliability.