Refactor systemd facts (#12)

* Use `Facter::Util::Resolution.exec`, which is backwards compatible with older Facter, calls the same method in modern facter
* Adds basic unit testing for facts

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/facter/systemd.rb b/lib/facter/systemd.rb
index d488efb..4361f77 100644
--- a/lib/facter/systemd.rb
+++ b/lib/facter/systemd.rb
@@ -23,13 +23,13 @@
 Facter.add(:systemd) do
   confine :kernel => :linux
   setcode do
-    Facter::Core::Execution.exec('ps -p 1 -o comm=') == 'systemd'
+    Facter::Util::Resolution.exec('ps -p 1 -o comm=') == 'systemd'
   end
 end
 
 Facter.add(:systemd_version) do
   confine :systemd => true
   setcode do
-    Facter::Core::Execution.exec("systemctl --version | awk '/systemd/{ print $2 }'")
+    Facter::Util::Resolution.exec("systemctl --version | awk '/systemd/{ print $2 }'")
   end
 end