(#4989) Add xendomains fact

Parses `/usr/sbin/xm list` and returns a comma-separated list of
domains. Based on a patch submitted by Jonas Genannt.

2 files changed, 27 insertions, 0 deletions

diff --git a/spec/unit/data/xendomains b/spec/unit/data/xendomains
new file mode 100644
index 0000000..9b112bc
--- /dev/null
+++ b/spec/unit/data/xendomains
@@ -0,0 +1,4 @@
+Name                                        ID   Mem VCPUs      State   Time(s)
+Domain-0                                     0   656     4     r-----  48140.9
+web01                                       48   512     2     -b----  97651.5
+mailserver                                  53   512     4     -b----   7536.1
diff --git a/spec/unit/util/xendomains.rb b/spec/unit/util/xendomains.rb
new file mode 100644
index 0000000..a0fa345
--- /dev/null
+++ b/spec/unit/util/xendomains.rb
@@ -0,0 +1,23 @@
+#!/usr/bin/env ruby
+
+require File.dirname(__FILE__) + '/../../spec_helper'
+
+require 'facter/util/xendomains'
+
+describe Facter::Util::Xendomains do
+  describe ".get_domains" do
+    it "should return a list of running Xen Domains on Xen0" do
+      sample_output_file = File.dirname(__FILE__) + '/../data/xendomains'
+      xen0_domains = File.read(sample_output_file)
+      Facter::Util::Resolution.stubs(:exec).with('/usr/sbin/xm list').returns(xen0_domains)
+      Facter::Util::Xendomains.get_domains.should == %{web01,mailserver}
+    end
+
+    context "when xm list isn't executable" do
+      it "should be nil" do
+        Facter::Util::Resolution.stubs(:exec).with('/usr/sbin/xm list').returns(nil)
+        Facter::Util::Xendomains.get_domains.should == nil
+      end
+    end
+  end
+end