[Task]: TEST-003: Test API Helper Functions

[jeromehardaway]

Priority: P0 - Critical
Effort: Small (2-3 hours)
File: src/pages/api/api-helpers/index.test.ts

Description

Develop comprehensive unit tests for API helper functions to ensure reliable parameter validation and error handling across all API endpoints. These utilities are foundational to API security and data integrity.

Test Cases

• ✅ checkParams() - missing parameters, null values, empty strings
• ✅ checkParams() - valid parameters, various types
• ✅ checkLength() - single word, multiple words, empty strings
• ✅ contactErrors - verify error messages are correct
• ✅ Test with generic types

Acceptance Criteria

• 100% code coverage for api-helpers/index.ts
• Type safety verified with TypeScript strict mode
• Edge cases tested (null, undefined, empty strings, special characters)
• All error messages validated for accuracy and consistency
• Tests run in <1 second
• No type errors or warnings

Technical Notes

• Verify generic type constraints work correctly
• Test parameter validation with different data types (string, number, object, array)
• Ensure error messages match expected format for API responses
• Consider boundary conditions for checkLength()