Testing Infrastructure Skill

Expert in creating shared testing infrastructure for Angular 21+ applications with modern best practices.

When to Use This Skill

Use this skill when:

• Setting up shared test fixtures and factories
• Creating component test harness
• Building mock services with ng-mocks
• Eliminating duplicate test setup code
• Standardizing test patterns across the codebase
• Implementing AAA (Arrange-Act-Assert) pattern
• Migrating from Jasmine to Jest

Angular Testing Best Practices (2025)

AAA Pattern (Arrange-Act-Assert)