1 files changed, 41 insertions, 0 deletions
diff --git a/spec/unit/facter/systemd_spec.rb b/spec/unit/facter/systemd_spec.rb
new file mode 100644
index 0000000..a7b6241
--- /dev/null
+++ b/spec/unit/facter/systemd_spec.rb
@@ -0,0 +1,41 @@
+require "spec_helper"
+
+describe Facter::Util::Fact do
+  before {
+    Facter.clear
+  }
+
+  describe "systemd" do
+    context 'returns true when systemd present' do
+      before do
+        Facter.fact(:kernel).stubs(:value).returns(:linux)
+      end
+      let(:facts) { {:kernel => :linux} }
+      it do
+        Facter::Util::Resolution.expects(:exec).with('ps -p 1 -o comm=').returns('systemd')
+        expect(Facter.value(:systemd)).to eq(true)
+      end
+    end
+      context 'returns false when systemd not present' do
+        before do
+          Facter.fact(:kernel).stubs(:value).returns(:linux)
+        end
+        let(:facts) { {:kernel => :linux} }
+        it do
+          Facter::Util::Resolution.expects(:exec).with('ps -p 1 -o comm=').returns('init')
+          expect(Facter.value(:systemd)).to eq(false)
+        end
+    end
+
+    context 'returns nil when kernel is not linux' do
+      before do
+        Facter.fact(:kernel).stubs(:value).returns(:windows)
+      end
+      let(:facts) { {:kernel => :windows} }
+      it do
+        Facter::Util::Resolution.expects(:exec).with('ps -p 1 -o comm=').never
+        expect(Facter.value(:systemd)).to be_nil
+      end
+    end
+  end
+end