Bug 34513: Add checkauth unit test for resetting auth state when changing users

Bug 34513: Add checkauth unit test for resetting auth state when changing users

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit abbbc5924de287a73c7d91c0f8ab70f8d7461508)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 6c1b969a1f5014c3ae4ea6405a91ff54f7c8afbe)
Signed-off-by: Jacob O'Mara <jacob.omara@ptfs-europe.com>