add test for #813

spec/unit/nginx_version_spec.rb

@@ -6,7 +6,7 @@ describe Facter::Util::Fact do
   }
 
   describe "nginx_version" do
-    context 'with value' do
+    context 'with current version output format' do
       before :each do
         Facter::Util::Resolution.stubs(:which).with('nginx').returns(true)
         Facter::Util::Resolution.stubs(:exec).with('nginx -v 2>&1').returns('nginx version: nginx/1.8.1')
@@ -15,5 +15,14 @@ describe Facter::Util::Fact do
         expect(Facter.fact(:nginx_version).value).to eq('1.8.1')
       }
     end
+    context 'with old version output format' do
+      before :each do
+        Facter::Util::Resolution.stubs(:which).with('nginx').returns(true)
+        Facter::Util::Resolution.stubs(:exec).with('nginx -v 2>&1').returns('nginx: nginx version: nginx/0.7.0')
+      end
+      it {
+        expect(Facter.fact(:nginx_version).value).to eq('0.7.0')
+      }
+    end
   end
 end