Bug 10382: Add unit tests for course items

Bug 10382: Add unit tests for course items

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit 3e6f9b8a1d5b293cfe5a00732e2b6f1371046855)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 84bf7c9468a1be39de54a488f41e5c579be86072)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>