Testing Strategy

This document outlines the testing strategy for the OAuth functionality in the application.

OAuth Helper Tests

We've implemented several types of tests for the OAuth functionality:

1. Unit Tests (src/lib/oauth.test.ts)

These tests verify that the OAuth helper functions work correctly in isolation:

• Tests for getRedirectUri function.
• Tests for service-specific OAuth configuration functions.
• Tests for environment variable handling and fallbacks.

2. OAuth Integration Tests (src/lib/oauth.integration.test.ts)

These tests verify that the OAuth helper functions integrate correctly with the Google OAuth client:

• Tests for creating a Google OAuth client with the helper functions.
• Tests for environment-specific redirect URI handling.

3. Token Refresh Tests (src/lib/token-refresh.test.ts)

These tests verify that the token refresh functionality works correctly:

• Tests for refreshing expired Google OAuth tokens.
• Tests for the token refresh flow.

4. API Route Integration Tests (src/app/api/oauth-integration.test.ts)

These tests verify that the OAuth helper functions can be used correctly in the API routes:

• Tests for generating auth URLs with the correct redirect URIs.
• Tests for handling custom redirect URIs.

5. OAuth Route Integration Tests (src/lib/oauth-route-integration.test.ts)

These tests verify that the OAuth helper functions work correctly in a route-like context: