Testing Guide

This section covers testing strategies and best practices for the Hello World DAO LLC platform.

Test Stack

Layer	Tool	Purpose
Backend Unit	cargo test	Rust canister logic
Backend Integration	PocketIC	Multi-canister interactions
Frontend Unit	Vitest	Component logic, stores, services
Frontend Component	React Testing Library	Component rendering
E2E	Playwright	Browser-based user flows
QA	Playwright MCP	Manual verification automation

Testing Guides

Guide	Description
Testing Pyramid Guidelines	What belongs at each test layer
PocketIC Setup	How to set up PocketIC for canister testing
Visualization Testing	Strategy for charts and SVG components

Quick Start

Run Backend Tests

cd <canister-repo>
cargo test

Run Frontend Tests

cd dao-suite   # (think-tank-suite: repo DELETED 2026-07-16, bl-1073)
npm test              # Run all tests
npm test -- --watch   # Watch mode
npm test -- --coverage # With coverage

Run E2E Tests

cd dao-suite   # (think-tank-suite: repo DELETED 2026-07-16, bl-1073)
npm run test:e2e      # Playwright tests

Test Naming Conventions

// Describe block: Component or module name
describe('BurndownChart', () => {

  // Nested describe: Feature or AC reference
  describe('rendering (AC-2.2.3.1)', () => {

    // It block: Specific behavior
    it('renders chart container with aria-label', () => {
      // ...
    });
  });
});

Test File Structure

src/
├── components/
│   └── backlog/
│       ├── BurndownChart.tsx
│       └── __tests__/
│           └── BurndownChart.test.tsx
├── stores/
│   ├── sprintStore.ts
│   └── __tests__/
│       └── sprintStore.test.ts
└── services/
    ├── sprintService.ts
    └── __tests__/
        └── sprintService.test.ts

Coverage Goals

Type	Target	Notes
Unit Tests	80%+	Focus on business logic
Component Tests	70%+	Key UI interactions
E2E Tests	Critical paths	Login, core workflows