Our python environment in the www interface uses pyodide. As files from the host may not be easily shared/mounted from a web application, pyodide uses Emscripten FS. With pytest requiring tests to be in placed in their own files so they may be auto-discovered, we may want a "simple" UI to let push / change files in Emscripten FS.
For instance we could provide a mean to upload a zip file with a number of pytest modules, extract it to the Emscripten FS (pyodide provides an API for that) and let the user run pytest from there