Merge pull request #753 from jyaworski/add_nginx_version_fact

Add nginx_version fact

lib/facter/nginx_version.rb

@@ -0,0 +1,8 @@
+Facter.add(:nginx_version) do
+  setcode do
+    if Facter::Core::Execution.which('nginx')
+      nginx_version = Facter::Core::Execution.execute('nginx -v 2>&1')
+      %r{^nginx version: nginx\/([\w\.]+)}.match(nginx_version)[1]
+    end
+  end
+end

spec/unit/nginx_version_spec.rb

@@ -0,0 +1,19 @@
+require "spec_helper"
+
+describe Facter::Util::Fact do
+  before {
+    Facter.clear
+  }
+
+  describe "nginx_version" do
+    context 'with value' do
+      before :each do
+        Facter::Core::Execution.stubs(:which).with('nginx').returns(true)
+        Facter::Core::Execution.stubs(:execute).with('nginx -v 2>&1').returns('nginx version: nginx/1.8.1')
+      end
+      it {
+        expect(Facter.fact(:nginx_version).value).to eq('1.8.1')
+      }
+    end
+  end
+end