Oliver Jakoubek 15cf18e2d8 Add unit tests for Client and Auth ... Create client_test.go with comprehensive tests using httptest.Server: - TestNewClient_Defaults: verify default configuration - TestNewClient_WithOptions: test functional options - TestAuthenticate_Success: successful authentication flow - TestAuthenticate_InvalidCredentials: 401 error handling - TestAuthenticate_2FA: 2FA token support - TestTokenRefresh_Auto: automatic token refresh on expiry - TestTokenRefresh_Manual: manual token refresh - TestCurrentUser: get current user information - TestRetryLogic_429: retry on rate limiting - TestRetryLogic_5xx: retry on server errors - TestRetryLogic_ExhaustedRetries: max retries exceeded - TestRetryLogic_ContextCancellation: respect context cancellation - TestCalculateRetryDelay: exponential backoff calculation - TestDefaultRetryConfig: verify default retry settings Add testdata/auth/ fixtures: - login_success.json - current_user.json All 14 tests pass. Closes checkvist-api-8bn		2026-01-14 13:35:44 +01:00
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current_user.json	Add unit tests for Client and Auth	2026-01-14 13:35:44 +01:00
login_success.json	Add unit tests for Client and Auth	2026-01-14 13:35:44 +01:00