Agach Testing Strategy

Test Contract Pattern

Each repository interface has a companion test package:

/domain/repositories/<name>/<name>.go        - Interface definition
/domain/repositories/<name>/<name>test/
    contract.go - Mock<Name> + <Name>ContractTesting

Mock Structure

type Mock<Name> struct {
    <Method>Func func(...) ...
}

func (m *Mock<Name>) <Method>(...) ... {
    if m.<Method>Func == nil {
        panic("called not defined <Method>Func")
    }
    return m.<Method>Func(...)
}

Contract Test Structure

func <Name>ContractTesting(t *testing.T, repo <Name>) {
    ctx := context.Background()

    t.Run("Contract: <behavior>", func(t *testing.T) {
        // Test implementation
        require.NoError(t, err)
        assert.ErrorIs(t, err, domain.ErrExpected)
    })
}

Integration Tests

• Use testcontainers-go with postgres:17 for all PostgreSQL tests
• One shared container per test package — start in TestMain, never per test function
• Pattern: newTestPool() → setupRepos() → contract testing

Security Tests

• Located alongside handler tests (*_security_test.go, deep_security_test.go)
• Test auth enforcement, input validation, injection prevention
• Both command and query handlers have security test coverage

Service Mock + Contract

domain/service/servicetest/contract.go - MockCommands + MockQueries

Used by app layer unit tests and inbound handler tests.

QA Seed Data (internal/server/qaseed/seed.go)

Deterministic seed for E2E/Playwright tests. Wipes and recreates:

• 3 roles: Backend (⚙️), Frontend (🖥️), QA (🧪) with tech stacks
• 2 skills: Go Development, Playwright Testing
• 1 Dockerfile: "go-service" (Go 1.24 template)
• 2 projects: "QA Test Project" (main) + "QA Feature Branch" (feature)
• 8 tasks in various states: todo, in_progress, blocked, done, won't-do, backlog, feature-linked, dependency pair
• 2 comments: one on todo task, one human comment on blocked task
• Outputs JSON with all entity IDs for Playwright test fixtures

Bug Fix Guidelines

• Add unit tests covering the fixed scenario to prevent regressions
• If the bug involves data/state that can be reproduced via seed data, add the use case to internal/server/qaseed/
• If the bug is reproducible through the web UI, add a Playwright test in playwright/

Playwright Tests (playwright/)

playwright/tests/
  01-home.spec.ts            - Login, home, navigation
  02-kanban-board.spec.ts    - Board display
  03-task-management.spec.ts - Task CRUD
  04-roles-features.spec.ts  - Roles & features
  05-backlog-settings.spec.ts - Backlog & settings
  06-skills-stats-export.spec.ts - Skills, stats, export
  07-theme-comments-ws-health.spec.ts - Theme, comments, WebSocket
  helpers.ts                 - Shared test helpers

data-qa Attributes

Interactive elements use data-qa attributes for Playwright targeting: create-project-btn, login-email-input, search-input, nav-kanban-btn, task-open-btn, user-menu-btn, theme-toggle-btn, etc.