File linked_to doesn't work properly

(moved from GitHub:

Describe the problem

When run kitchen verify it reports that symbolic link is not linked to proper location. However when I check file manually - the link is right:
The check:

  describe file('/etc/systemd/system/') do
    it { should be_linked_to '/dev/null' }


      ×  File /etc/systemd/system/ should be linked to "/dev/null"
     expected `File /etc/systemd/system/"/dev/null")` to return true, got false

Manual check:

$ ls -la /etc/systemd/system/
lrwxrwxrwx. 1 root root 9 Oct 26 20:42 /etc/systemd/system/ -> /dev/null

chef dk version I use:

$ chef --version
ChefDK version: 4.5.1
Chef Infra Client version: 15.4.45
Chef InSpec version: 4.18.0
Test Kitchen version: 2.3.3
Foodcritic version: 16.1.1
Cookstyle version: 5.9.3

And here is my OS:

$ sw_vers
ProductName:	Mac OS X
ProductVersion:	10.15
BuildVersion:	19A602