This test is no longer executing successfully when applied to master. Looks like some changes made in f098f2e have altered the test logic.

```
Failures:

  1) Puppet::Type::Cron should default to user => root if Etc.getpwuid(Process.uid) returns nil (#12357)
     Failure/Error: entry.value(:user).should eql "root"
       
       expected: "root"
            got: "*"
       
       (compared using eql?)
     # ./spec/unit/type/cron_spec.rb:508:in `block (2 levels) in <top (required)>'

Finished in 0.36857 seconds
92 examples, 1 failure
```