🧪 EU Parliament Monitor — Unit Test Plan

Comprehensive Unit Testing Strategy for European Parliament Intelligence
🔬 Vitest Framework • 📊 Coverage Tracking • 🔐 Security Validation

📋 Document Owner: CEO | 📄 Version: 1.0 | 📅 Last Updated: 2026-02-20 (UTC)
🔄 Review Cycle: Quarterly | ⏰ Next Review: 2026-05-20

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📚 Architecture Documentation Map

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📋 Executive Summary

This Unit Test Plan provides the comprehensive unit testing strategy for the EU Parliament Monitor platform, ensuring all critical components — news generation, multi-language support, and content validation — function correctly and maintain quality standards.

🔐 ISMS Alignment: This unit test plan implements Hack23 Secure Development Policy Section 4.3.1 — Unit Testing Requirements.

ISMS Compliance Requirements

🎯 Requirement	📊 Target	✅ Status	📋 ISMS Reference
Line Coverage	≥80%	✅ Tracked	Section 4.3.1.1
Branch Coverage	≥70%	✅ Tracked	Section 4.3.1.2
Test Execution	Every commit	✅ Automated	Section 4.3.1.3
Public Reporting	Required	✅ Published	Section 4.3.1.4

Evidence Links:

• 
• Coverage Reports

See Also:

• E2E Test Plan
• Performance Testing
• Architecture

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🔧 Testing Framework

Core Testing Stack

Component	Technology	Purpose
Unit Testing	Vitest	Modern, fast unit test runner
Coverage Tool	@vitest/coverage-v8	V8-based code coverage
Assertions	Vitest built-in	expect() API
Mocking	Vitest vi.mock	Module and function mocking
Environment	Node.js 26	Runtime environment

Configuration

Coverage thresholds and reporting configured in vitest.config.js:

export default defineConfig({
  test: {
    coverage: {
      provider: 'v8',
      reporter: ['text', 'html', 'lcov', 'json-summary'],
    },
  },
});

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🧩 Test Organization

File Structure

test/
├── unit/
│   ├── news-generator.test.js       # News generation logic
│   ├── template-engine.test.js      # HTML template processing
│   └── language-utils.test.js       # Multi-language utilities
├── integration/
│   ├── multi-language.test.js       # Multi-language integration
│   └── news-generation.test.js      # Full news pipeline
├── fixtures/
│   ├── sample-news.json             # Test news data
│   └── test-template.html           # Test HTML template
└── README.md

Test Categories

Category	Purpose	Coverage Target
Unit Tests	Individual function validation	≥80% line coverage
Integration Tests	Multi-component workflows	Key pipeline paths
Fixture Tests	Template and data validation	All templates

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🧪 Test Execution

Development Commands

Command	Purpose
npm run test	Run all tests once
npm run test:coverage	Run tests with coverage report
npm run test -- --watch	Watch mode for development

CI/CD Integration

Tests run automatically on every push and pull request via GitHub Actions:

- name: Run tests
  run: npm run test
- name: Run tests with coverage
  run: npm run test:coverage

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📊 Coverage Requirements

Overall Targets

Per ISMS Secure Development Policy:

Metric	Policy Minimum	Status
Line Coverage	80%	✅ Tracked
Branch Coverage	70%	✅ Tracked
Function Coverage	75%	✅ Tracked
Statement Coverage	80%	✅ Tracked

Component Coverage

Component	Target	Priority
News Generation Scripts	80%+	✅ High
Template Engine	80%+	✅ High
Language Utilities	90%+	✅ High
Content Validation	80%+	⚠️ Medium
HTML Generation	70%+	⚠️ Medium

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📋 Testing Standards

Test Structure — AAA Pattern

All tests follow the Arrange-Act-Assert pattern:

import { describe, it, expect } from 'vitest';

describe('NewsGenerator', () => {
  it('should generate articles in all supported languages', () => {
    // Arrange
    const languages = [
      'en',
      'de',
      'fr',
      'es',
      'it',
      'nl',
      'pl',
      'pt',
      'ro',
      'sv',
      'da',
      'fi',
      'el',
      'hu',
    ];

    // Act
    const articles = generateNewsForLanguages(languages);

    // Assert
    expect(articles).toHaveLength(14);
    languages.forEach((lang) => {
      expect(articles.find((a) => a.language === lang)).toBeDefined();
    });
  });
});

Edge Case Testing

Every function must test:

• ✅ Happy path (expected input)
• ✅ Boundary conditions (empty arrays, max lengths)
• ✅ Invalid input (null, undefined, malformed data)
• ✅ Error handling and recovery

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🎯 Compliance Mapping

ISO 27001 Alignment

Control	Requirement	Implementation
A.8.9	Configuration Management	Version-controlled test plans
A.14.2	Testing in Development	Automated unit testing
A.14.3	Test Data Protection	Sanitized test data only

NIST CSF Alignment

Function	Category	Implementation
PR.IP-1	Baseline Configuration	Vitest config management
PR.IP-2	SDLC Integration	Unit tests in CI/CD pipeline

CIS Controls Alignment

Control	Description	Implementation
16.9	Automated Testing	Unit test automation
16.10	Test Environment	Isolated test execution

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🔗 Related Documentation

• 🔍 E2E Test Plan — End-to-end testing
• ⚡ Performance Testing — Performance benchmarks
• 🏛️ Architecture — System design
• 🛡️ Security Architecture — Security controls
• ⚙️ Workflows — CI/CD documentation
• 🛡️ CRA Assessment — Testing evidence for CRA

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📋 Document Control:
✅ Approved by: James Pether Sörling, CEO
📤 Distribution: Public
🏷️ Classification:
🎯 Framework Compliance: