Host snapshot rspec tests

spec/vmpooler/pool_manager_spec.rb

@@ -211,4 +211,72 @@ describe 'Pool Manager' do
     end
   end
 
+  describe '#_create_vm_snapshot' do
+    let(:snapshot_manager) { 'snapshot_manager' }
+    let(:pool_helper) { double('snapshot_manager') }
+    let(:vsphere) { {snapshot_manager => pool_helper} }
+
+    before do
+      expect(subject).not_to be_nil
+      $vsphere = vsphere
+    end
+
+    context '(valid host)' do
+      let(:vm_host) { double('vmhost') }
+
+      it 'creates a snapshot' do
+        expect(pool_helper).to receive(:find_vm).and_return vm_host
+        expect(logger).to receive(:log)
+        expect(vm_host).to receive_message_chain(:CreateSnapshot_Task, :wait_for_completion)
+        expect(redis).to receive(:hset).with('vmpooler__vm__testvm', 'snapshot:testsnapshot', Time.now.to_s)
+        expect(logger).to receive(:log)
+
+        subject._create_vm_snapshot('testvm', 'testsnapshot')
+      end
+    end
+  end
+
+  describe '#_revert_vm_snapshot' do
+    let(:snapshot_manager) { 'snapshot_manager' }
+    let(:pool_helper) { double('snapshot_manager') }
+    let(:vsphere) { {snapshot_manager => pool_helper} }
+
+    before do
+      expect(subject).not_to be_nil
+      $vsphere = vsphere
+    end
+
+    context '(valid host)' do
+      let(:vm_host) { double('vmhost') }
+      let(:vm_snapshot) { double('vmsnapshot') }
+
+      it 'reverts a snapshot' do
+        expect(pool_helper).to receive(:find_vm).and_return vm_host
+        expect(pool_helper).to receive(:find_snapshot).and_return vm_snapshot
+        expect(logger).to receive(:log)
+        expect(vm_snapshot).to receive_message_chain(:RevertToSnapshot_Task, :wait_for_completion)
+        expect(logger).to receive(:log)
+
+        subject._revert_vm_snapshot('testvm', 'testsnapshot')
+      end
+    end
+  end
+
+  describe '#_check_snapshot_queue' do
+    let(:pool_helper) { double('pool') }
+    let(:vsphere) { {pool => pool_helper} }
+
+    before do
+      expect(subject).not_to be_nil
+      $vsphere = vsphere
+    end
+
+    it 'checks appropriate redis queues' do
+      expect(redis).to receive(:spop).with('vmpooler__tasks__snapshot')
+      expect(redis).to receive(:spop).with('vmpooler__tasks__snapshot-revert')
+
+      subject._check_snapshot_queue
+    end
+  end
+
 end