Switching to an account somebody had shared showed an empty folder tree.
Their files listed perfectly well; the sidebar beside them was blank,
with nothing to say why.
Switching accounts cleared `nodes` and `children` and stopped there. So
`treeLoaded` stayed true from the account before -- the sidebar only asks
for folders when it is false, and it never asked again -- while `dirIds`
still named the previous account's folders, which no longer resolved
against the cleared `nodes`. An empty tree either way, and no error,
because nothing had failed.
The fields that belong to one account are now named in one place,
`emptyForAccount`, and the test asserts the whole set rather than the
ones that come to mind. The bug was not bad logic, it was a field nobody
remembered when two more were added a commit earlier, and asserting the
set is the only guard that survives the next two.
Found by the person it was built for, on a real share between two
accounts, which is where it was always going to show up: the tree is
built from a query that had already run for their own account, so it
only breaks on the switch.
jcoffey-dev
2360e40733