sneak
ef3f10fecc
19 tests covering ApiClient's full public surface: default and custom origins, X-Client-Package and X-Auth-Token headers, getJSON with query params, postJSON with JSON body, ApiError on 4xx/5xx, streaming file and thumbnail downloads, and self-hosted origin routing. Tests inject a recording fetch via the constructor, so nothing hits the network. The test file is documented to serve as canonical usage reference per the development workflow.