Starting around snap 4 we expect to have 100% translations for all Hammer and Foreman plugins. Before that (and any stream) we don't.

The supported languages are currently:

• French (fr)
• Japanese (ja)
• Korean (ko)
• Simplified Chinese (zh_CN)

The best way to verify there are no untranslated strings isn't quite clear to me (and needs to be researched), but https://issues.redhat.com/browse/SAT-32453?focusedId=26995058&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-26995058 shows how I did it before. Ideally you wouldn't also verify it against the .pot file that they were in fact updated.