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diff --git a/spec/unit/virtual_spec.rb b/spec/unit/virtual_spec.rb
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+++ b/spec/unit/virtual_spec.rb
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+require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
+
+require 'facter'
+require 'facter/util/virtual'
+require 'facter/util/macosx'
+
+describe "Virtual fact" do
+
+    after do
+        Facter.clear
+    end
+
+  it "should be zone on Solaris when a zone" do
+      Facter.fact(:kernel).stubs(:value).returns("SunOS")
+      Facter::Util::Virtual.stubs(:zone?).returns(true)
+      Facter::Util::Virtual.stubs(:vserver?).returns(false)
+      Facter::Util::Virtual.stubs(:xen?).returns(false)
+      Facter.fact(:virtual).value.should == "zone"
+  end
+
+  it "should be jail on FreeBSD when a jail in kvm" do
+      Facter.fact(:kernel).stubs(:value).returns("FreeBSD")
+      Facter::Util::Virtual.stubs(:jail?).returns(true)
+      Facter::Util::Virtual.stubs(:kvm?).returns(true)
+      Facter.fact(:virtual).value.should == "jail"
+  end
+
+  it "should be hpvm on HP-UX when in HP-VM" do
+     Facter.fact(:kernel).stubs(:value).returns("HP-UX")
+     Facter::Util::Virtual.stubs(:hpvm?).returns(true)
+     Facter.fact(:virtual).value.should == "hpvm"
+  end
+
+  describe "on Darwin" do
+      it "should be parallels with Parallels vendor id" do
+          Facter.fact(:kernel).stubs(:value).returns("Darwin")
+          Facter::Util::Macosx.stubs(:profiler_data).returns({ "spdisplays_vendor-id" => "0x1ab8" })
+          Facter.fact(:virtual).value.should == "parallels"
+      end
+
+      it "should be parallels with Parallels vendor name" do
+          Facter.fact(:kernel).stubs(:value).returns("Darwin")
+          Facter::Util::Macosx.stubs(:profiler_data).returns({ "spdisplays_vendor" => "Parallels" })
+          Facter.fact(:virtual).value.should == "parallels"
+      end
+
+      it "should be vmware with VMWare vendor id" do
+          Facter.fact(:kernel).stubs(:value).returns("Darwin")
+          Facter::Util::Macosx.stubs(:profiler_data).returns({ "spdisplays_vendor-id" => "0x15ad" })
+          Facter.fact(:virtual).value.should == "vmware"
+      end
+
+      it "should be vmware with VMWare vendor name" do
+          Facter.fact(:kernel).stubs(:value).returns("Darwin")
+          Facter::Util::Macosx.stubs(:profiler_data).returns({ "spdisplays_vendor" => "VMWare" })
+          Facter.fact(:virtual).value.should == "vmware"
+      end
+  end
+
+  describe "on Linux" do
+      before do
+          Facter::Util::Virtual.stubs(:zone?).returns(false)
+          Facter::Util::Virtual.stubs(:openvz?).returns(false)
+          Facter::Util::Virtual.stubs(:vserver?).returns(false)
+          Facter::Util::Virtual.stubs(:xen?).returns(false)
+          Facter::Util::Virtual.stubs(:kvm?).returns(false)
+      end
+
+      it "should be parallels with Parallels vendor id from lspci" do
+          Facter.fact(:kernel).stubs(:value).returns("Linux")
+          Facter::Util::Resolution.stubs(:exec).with('lspci').returns("01:00.0 VGA compatible controller: Unknown device 1ab8:4005")
+          Facter.fact(:virtual).value.should == "parallels"
+      end
+
+      it "should be parallels with Parallels vendor name from lspci" do
+          Facter.fact(:kernel).stubs(:value).returns("Linux")
+          Facter::Util::Resolution.stubs(:exec).with('lspci').returns("01:00.0 VGA compatible controller: Parallels Display Adapter")
+          Facter.fact(:virtual).value.should == "parallels"
+      end
+
+      it "should be vmware with VMware vendor name from lspci" do
+          Facter.fact(:kernel).stubs(:value).returns("Linux")
+          Facter::Util::Resolution.stubs(:exec).with('lspci').returns("00:0f.0 VGA compatible controller: VMware Inc [VMware SVGA II] PCI Display Adapter")
+          Facter.fact(:virtual).value.should == "vmware"
+      end
+
+      it "should be vmware with VMWare vendor name from dmidecode" do
+          Facter.fact(:kernel).stubs(:value).returns("Linux")
+          Facter::Util::Resolution.stubs(:exec).with('lspci').returns(nil)
+          Facter::Util::Resolution.stubs(:exec).with('dmidecode').returns("On Board Device 1 Information\nType: Video\nStatus: Disabled\nDescription: VMware SVGA II")
+          Facter.fact(:virtual).value.should == "vmware"
+      end
+
+      it "should be parallels with Parallels vendor name from dmidecode" do
+          Facter.fact(:kernel).stubs(:value).returns("Linux")
+          Facter::Util::Resolution.stubs(:exec).with('lspci').returns(nil)
+          Facter::Util::Resolution.stubs(:exec).with('dmidecode').returns("On Board Device Information\nType: Video\nStatus: Disabled\nDescription: Parallels Video Adapter")
+          Facter.fact(:virtual).value.should == "parallels"
+      end
+
+      it "should be vmware with VMWare vendor name from prtdiag" do
+          Facter.fact(:kernel).stubs(:value).returns("Linux")
+          Facter::Util::Resolution.stubs(:exec).with('lspci').returns(nil)
+          Facter::Util::Resolution.stubs(:exec).with('dmidecode').returns(nil)
+          Facter::Util::Resolution.stubs(:exec).with('prtdiag').returns("System Configuration: VMware, Inc. VMware Virtual Platform")
+          Facter.fact(:virtual).value.should == "vmware"
+      end
+
+      it "should be parallels with Parallels vendor name from prtdiag" do
+          Facter.fact(:kernel).stubs(:value).returns("Linux")
+          Facter::Util::Resolution.stubs(:exec).with('lspci').returns(nil)
+          Facter::Util::Resolution.stubs(:exec).with('dmidecode').returns(nil)
+          Facter::Util::Resolution.stubs(:exec).with('prtdiag').returns("System Configuration: Parallels Virtual Platform")
+          Facter.fact(:virtual).value.should == "parallels"
+      end
+  end
+
+end
+
+describe "is_virtual fact" do
+
+    after do
+        Facter.clear
+    end
+
+    it "should be virtual when running on xen" do
+       Facter.fact(:kernel).stubs(:value).returns("Linux")
+       Facter.fact(:virtual).stubs(:value).returns("xenu")
+       Facter.fact(:is_virtual).value.should == "true"
+    end
+
+    it "should be false when running on xen0" do
+       Facter.fact(:kernel).stubs(:value).returns("Linux")
+       Facter.fact(:virtual).stubs(:value).returns("xen0")
+       Facter.fact(:is_virtual).value.should == "false"
+    end
+
+    it "should be false when running on physical" do
+       Facter.fact(:kernel).stubs(:value).returns("Linux")
+       Facter.fact(:virtual).stubs(:value).returns("physical")
+       Facter.fact(:is_virtual).value.should == "false"
+    end
+
+    it "should be true when running on vmware" do
+        Facter.fact(:kernel).stubs(:value).returns("Linux")
+        Facter.fact(:virtual).stubs(:value).returns("vmware")
+        Facter.fact(:is_virtual).value.should == "true"
+    end
+
+    it "should be true when running on openvz" do
+        Facter.fact(:kernel).stubs(:value).returns("Linux")
+        Facter.fact(:virtual).stubs(:value).returns("openvzve")
+        Facter.fact(:is_virtual).value.should == "true"
+    end
+
+    it "should be true when running on kvm" do
+        Facter.fact(:kernel).stubs(:value).returns("Linux")
+        Facter.fact(:virtual).stubs(:value).returns("kvm")
+        Facter.fact(:is_virtual).value.should == "true"
+    end
+
+    it "should be true when running in jail" do
+        Facter.fact(:kernel).stubs(:value).returns("FreeBSD")
+        Facter.fact(:virtual).stubs(:value).returns("jail")
+        Facter.fact(:is_virtual).value.should == "true"
+    end
+
+    it "should be true when running in zone" do
+        Facter.fact(:kernel).stubs(:value).returns("SunOS")
+        Facter.fact(:virtual).stubs(:value).returns("zone")
+        Facter.fact(:is_virtual).value.should == "true"
+    end
+
+    it "should be true when running on hp-vm" do
+        Facter.fact(:kernel).stubs(:value).returns("HP-UX")
+        Facter.fact(:virtual).stubs(:value).returns("hpvm")
+        Facter.fact(:is_virtual).value.should == "true"
+    end
+
+    it "should be true when running on parallels" do
+        Facter.fact(:kernel).stubs(:value).returns("Darwin")
+        Facter.fact(:virtual).stubs(:value).returns("parallels")
+        Facter.fact(:is_virtual).value.should == "true"
+    end
+end