vitest-testing-patterns

# vitest testing patterns

Master Vitest testing patterns including unit tests, mocks, spies, and browser mode testing. This skill provides comprehensive coverage of essential concepts, patterns, and best practices for professional Vitest development.

## Overview

Vitest is a powerful tool for typescript development, providing robust capabilities for maintaining code quality and ensuring reliable software delivery. This skill covers the fundamental through advanced aspects of working with Vitest.

## Installation and Setup

### Basic Installation

Setting up Vitest requires proper installation and configuration in your development environment.

```bash
# Installation command specific to Vitest
# Follow official documentation for latest version
```

### Project Configuration

Create appropriate configuration files and setup for your project structure:

- Configuration file setup
- Project structure organization
- Team collaboration setup
- CI/CD integration preparation

## Core Concepts

### Fundamental Principles

Understanding the core principles of Vitest is essential for effective usage:

1. **Architecture** - How Vitest is structured and operates
2. **Configuration** - Setting up and customizing behavior
3. **Integration** - Working with other tools and frameworks
4. **Best Practices** - Industry-standard approaches

### Key Features

Vitest provides several key features that make it valuable:

- Feature 1: Core functionality
- Feature 2: Advanced capabilities  
- Feature 3: Integration options
- Feature 4: Performance optimization
- Feature 5: Extensibility

### Configuration Strategy

Proper configuration ensures Vitest works optimally:

- Environment-specific setup
- Team standards enforcement
- Performance tuning
- Error handling configuration

### Advanced Usage

For complex scenarios, Vitest offers advanced capabilities:

- Custom extensions
- Advanced patterns
- Performance optimization
- Scalability considerations

## Code Examples

### Example 1: Basic