acl_users.getUser(owner) returns wrong user when users with similar login names exist

[mt]

PluggableAuthService with plugin ZODBUserManager returns an incorrect user when users with similar login names exist. e.g. system with two users 'editor' and 'copyeditor' PloneTool.py line 441

        user = acl_users.getUser(owner)

will return the user 'copyeditor' when you enter 'editor' Appending the following test case to PluggableAuthService/plugins/tests/test_ZODBUserManager.py shows the test failing

   def test_changeOwnership(self):        
        zum = self._makeOne()
        zum.addUser('copyeditor', 'copyeditor', 'password')
        zum.addUser('editor', 'editor', 'password')
        info = zum.enumerateUsers(login='editor')        
        self.assertEqual(info[0]['login'], 'editor')

then

cd zopeinstance
./bin/zopectl test --dir Products/PluggableAuthService

note: info[0] is used in the test as this is what is used in the function _verifyUser (PluggableAuthService.py line 785)

[mt]

The correct formatting for the test above is

 def test_changeOwnership(self):        
        zum = self._makeOne()
        zum.addUser('copyeditor', 'copyeditor', 'password')
        zum.addUser('editor', 'editor', 'password')
        info = zum.enumerateUsers(login='editor')        
        self.assertEqual(info[0]['login'], 'editor')

[wichert]

Can you retry with enumerateUsres(login='editor', exact=True) ?

[mt]

Hi Wichert, If I rerun the test with

info = zum.enumerateUsers(login='editor', exact_match=True)

the test passes fine, however the same problem arises with the getUsers function,

acl_users.getUser(owner)

How do I make it obey exact_match ?

[wichert]

(In [9908]) The new owner is identified by his/her userid, not by the users name. fixes #5535