[claude]

Requested by Sebastian Konowrocki · Slack thread

Before / After

@leancodepl/axios-cqrs-client previously had no tests. This PR adds 36 unit tests across two spec files covering both public factories:

• mkCqrsClient — endpoint routing (query/, operation/, command/), DTO body serialization, Bearer token injection (default + custom header), absent-token handling, abort signal wiring, success wrapping (no key transform), and the createCommand.handle flow (success and mapped validation-error branches).
• mkUncapitalizedCqrsClient — deep PascalCase→camelCase result transformation (nested objects and arrays), error passthrough (no transform on failures), command inheritance, and endpoint routing.
• Error handling & the 401 refresh flow — status mapping for 400/403/404/422/500, network errors (AxiosError without a response), unknown non-Axios errors, ERR_CANCELED → aborted, token-refresh-and-retry success, give-up after a second 401 (isRetry marker + fresh token asserted), and refresh-failure when invalidateToken returns false.

How

Tests drive the real axios instance (with its real request/response interceptors — the unit under test) end-to-end via a custom queued adapter injected through axiosOptions, so axios itself converts non-2xx responses into the AxiosError paths the interceptor handles. Conventions mirror the sibling @leancodepl/fetch-client spec.

🤖 Generated with Claude Code

https://claude.ai/code/session_01DXXPnGepYUGie3we1X9PTR

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