Can't get user groups with Rest API

[Julia Nunes Pedrosa]

Hey guys, 

I am trying to get the list of groups an user is member of but for some reason it isn't expanding.

curl -u user:userpassword http://jira.url/rest/api/2/user?username=testuser&expand=groups

This is the answer I'm receiving:

[...]

"groups":{"size":14,"items":[]},
"applicationRoles":{"size":1,"items":[]},
"expand":"groups,applicationRoles"}

[Julia Nunes Pedrosa · Accepted solution]

I just realized that for some reason my server is requiring the URL to be under quotation marks. Now it's working.

curl -u user:userpassword "http://jira.url/rest/api/2/user?username=testuser&expand=groups"