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Testing Overview

Why Test API Integrations?

Thorough testing helps ensure your integration works correctly, handles errors gracefully, and provides a reliable user experience.
Testing Benefits:
  • Catch integration issues before production
  • Validate error handling and edge cases
  • Ensure data integrity and security
  • Improve application reliability
  • Reduce support requests and debugging time

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Authentication Setup

Test API Keys

Create dedicated API keys for testing to avoid affecting production data.
Best Practices:
  • Use separate API keys for testing and production
  • Create test keys with minimal required permissions
  • Document your test key configurations
  • Rotate test keys regularly for security

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Error Scenario Testing

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Date Format Testing

ISO 8601 Date Format

All date and time values in the Affelios API must follow the ISO 8601 standard format.
Required Format: 
YYYY-MM-DDTHH:mm:ss.sssZ
Test Cases:
  • Valid ISO 8601 formats
  • Invalid date formats (MM/DD/YYYY, DD/MM/YYYY)
  • Missing timezone information
  • 12-hour format without AM/PM
  • Timezone names instead of offsets
  • Unix timestamps instead of ISO strings
Examples:
  • ✅ 2024-01-15T10:30:00.000Z (UTC timezone)
  • ✅ 2024-01-15T10:30:00.000+00:00 (with timezone offset)
  • ✅ 2024-01-15 (date only)
  • ❌ 01/15/2024 (US format)
  • ❌ 15/01/2024 (European format)
  • ❌ 2024-01-15 10:30:00 (missing T separator)

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Integration Testing

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End-to-End Testing

Complete Workflow Testing

Test complete user workflows to ensure all components work together correctly.
Test Scenarios:
  1. Customer Creation Flow
    • Create customer via API
    • Verify customer appears in dashboard
    • Test customer data retrieval
    • Validate error handling
  2. Transaction Processing Flow
    • Submit transaction via API
    • Verify immediate response (201 Created)
    • Check transaction appears in dashboard
    • Monitor for asynchronous processing errors
  3. Commission Calculation Flow
    • Create transaction with known commission rules
    • Verify commission calculation
    • Check commission appears in reports
    • Validate payout calculations

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Performance Testing

Load and Performance

Test your integration under various load conditions to ensure it performs well.
Test Scenarios:
  • Single Request Testing: Verify individual API calls work correctly
  • Batch Request Testing: Test multiple requests in sequence
  • Concurrent Request Testing: Test simultaneous API calls
  • Rate Limit Testing: Verify behavior under high request volumes
  • Timeout Testing: Test behavior with slow network conditions

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Testing Tools and Methods

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API Testing Tools

Benefits:
  • Test API requests directly without application code
  • Easily modify headers, body, and parameters
  • View raw request and response data
  • Test different authentication scenarios
  • Save and organize API requests for reuse
Quick Start: You can import the Affelios OpenAPI specification directly into Postman. Use the OpenAPI Specification to automatically generate a complete collection with all available endpoints, request examples, and response schemas.
Setup Example:
Method: POST
URL: https://api.affelios.com/api/v1/transactions
Headers:
  X-Api-Key: your-api-key-here
  Content-Type: application/json
Body (raw JSON):
{
  "externalId": "test_transaction_123",
  "customerId": "customer_456",
  "amount": 100.00
}
Unit Tests:
  • Test individual API functions
  • Mock API responses for consistent testing
  • Validate error handling logic
  • Test data transformation functions
Integration Tests:
  • Test complete API workflows
  • Use test environment for safe testing
  • Validate end-to-end functionality
  • Test error scenarios and recovery
Dashboard Verification:
  • Check that API-created data appears correctly
  • Verify data formatting and display
  • Test different user permission levels
  • Validate report generation
Error Monitoring:
  • Check Transactions > Transaction Errors and Failures
  • Monitor for asynchronous processing errors
  • Verify error messages are helpful
  • Test error recovery procedures

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Monitoring and Validation

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Real-time Monitoring

Live Monitoring

Monitor your integration in real-time to catch issues early.
Monitoring Points:
  • API response times and success rates
  • Error frequency and types
  • Data synchronization accuracy
  • User experience metrics
  • System performance indicators

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Validation Checklist

Pre-Production Checklist

Use this checklist to ensure your integration is ready for production.
Integration Validation:
  • All API endpoints tested successfully
  • Error handling tested for all scenarios
  • Authentication and permissions verified
  • Data validation working correctly
  • Performance meets requirements
  • Monitoring and logging implemented
  • Documentation updated
  • Support team trained on integration
Error Handling Validation:
  • 401 Unauthorized errors handled
  • 403 Forbidden errors handled
  • 404 Not Found errors handled
  • 400 Validation errors handled
  • Network timeout errors handled
  • Asynchronous processing errors monitored
  • User-friendly error messages displayed
  • Error logging and reporting working

Next Steps

Now that you understand API testing, you can build more reliable integrations with the Affelios API.
What’s Next?
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