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This adds playwright tests related to the file system. These tests modify files/directories by running shell commands such as
cp
andtouch
, and checks that the changes are reflected in the JupyterLite contents manager.To do this I hot swap the JupyterLab
galata
ContentsHelper
https://github.com/jupyterlab/jupyterlab/blob/9fb90cab96a67bef9050ab7cf917eb3cfdb55414/galata/src/contents.ts#L20
which works via the REST API for a different
ContentsHelper
which is part-implemented in this PR and uses the JupyterLite contents manager instead.I am following the
ContentsHelper
approach to keep consistent withgalata
. This approach might be useful upstream in JupyterLite for tests like these:https://github.com/jupyterlite/jupyterlite/blob/ac544cc2a2836aa8cb74fb280b2488bf43157e99/ui-tests/test/contents.test.ts#L33-L44