ensure that users are cached when they are retrieved

[blizzz]

this got lost during the performance changes (sic!), but now comes with a unit test 😊

Basically you see an additional request on LDAP after getting a user list (even on login) that checks for existence of the user. The data is fresh from LDAP however and can be cached right away to avoid this additional requests.

@nextcloud/ldap

[codecov]

Codecov Report

Merging #7418 into master will decrease coverage by 23.65%.
The diff coverage is 0%.

@@              Coverage Diff              @@
##             master    #7418       +/-   ##
=============================================
- Coverage     50.93%   27.27%   -23.66%     
- Complexity    24710    24712        +2     
=============================================
  Files          1586     1522       -64     
  Lines         94144    86415     -7729     
  Branches       1364        0     -1364     
=============================================
- Hits          47948    23568    -24380     
- Misses        46196    62847    +16651

Impacted Files	Coverage Δ	Complexity Δ
apps/user_ldap/lib/Helper.php	29% <ø> (-9%)	34 <0> (ø)
apps/user_ldap/lib/Access.php	0% <0%> (-26.29%)	315 <0> (+2)
lib/private/DB/OCSqlitePlatform.php	0% <0%> (-100%)	5% <0%> (ø)
lib/private/Files/Cache/Wrapper/JailPropagator.php	0% <0%> (-100%)	1% <0%> (ø)
lib/private/SystemTag/ManagerFactory.php	0% <0%> (-100%)	3% <0%> (ø)
lib/private/Share20/Hooks.php	0% <0%> (-100%)	3% <0%> (ø)
apps/files_trashbin/lib/Command/Expire.php	0% <0%> (-100%)	3% <0%> (ø)
apps/files_trashbin/lib/Hooks.php	0% <0%> (-100%)	3% <0%> (ø)
...yBuilder/FunctionBuilder/SqliteFunctionBuilder.php	0% <0%> (-100%)	1% <0%> (ø)
apps/user_ldap/lib/LDAPProviderFactory.php	0% <0%> (-100%)	2% <0%> (ø)
... and 443 more

[rullzer]

Yes please!

[MorrisJobke]

Tested and still works 👍