Error Testing Overview

The Sparkle error testing framework provides a fluent API for creating comprehensive error scenarios and validation tests.

Test Scenario Builder

Create type-safe error scenarios using the fluent builder pattern:

import { TestScenarioBuilder } from '@sparkle/error-testing'

const scenario = TestScenarioBuilder
  .create<ValidationError, FormState>('Email validation')
  .withErrorType('VALIDATION_ERROR')
  .withState({ email: 'invalid-email' })
  .build()

Error Patterns

Common error testing patterns:

• Validation Errors - Form and input validation
• Network Errors - API and connectivity issues
• Authentication Errors - Login and permission failures
• Runtime Errors - Unexpected application errors

Best Practices

• Use descriptive scenario names
• Test both error and success paths
• Leverage TypeScript for type safety
• Group related scenarios together