Testing

This section covers testing strategies for applications using LaunchDarkly feature flags.

Testing Recipes

Integration Testing

• Emulating LaunchDarkly Downtime - Validate your application behaves correctly when LaunchDarkly is unavailable

Unit Testing

• Unit Testing React Components - Test React components that use LaunchDarkly hooks in isolation

Choosing a Testing Strategy

Integration testing validates that your application handles LaunchDarkly service unavailability gracefully. Use these patterns to test:

• Application startup with LD unreachable
• Fallback value behavior
• Timeout and retry logic

Unit testing validates component behavior with specific flag values. Use these patterns to test:

• Component rendering with different flag states
• Flag-dependent logic and branches
• Component interactions with LaunchDarkly hooks