(POOLER-73) Add spec tests for get_vm_host_info

Add spec tests for get_vm_host_info

spec/unit/pool_manager_spec.rb

@@ -920,6 +920,22 @@ EOT
     end
   end
 
+  describe "#get_vm_host_info" do
+    before do
+      expect(subject).not_to be_nil
+    end
+
+    let(:vm_object) { double('vm_object') }
+    let(:parent_host) { double('parent_host') }
+
+    it 'should return an array with host information' do
+      expect(vm_object).to receive_message_chain(:summary, :runtime, :host).and_return(parent_host)
+      expect(parent_host).to receive(:name).and_return('vmhostname')
+
+      expect(subject.get_vm_host_info(vm_object)).to eq([parent_host,'vmhostname'])
+    end
+  end
+
   describe '#_check_pool' do
     let(:pool_helper) { double('pool') }
     let(:vsphere) { {pool => pool_helper} }