Render snapshot for VM

Refresh parser now renders snapshot for VM.
VCloud only returns creation time, size and
poweredOn, which tells if if the virtual machine was
powered on when the snapshot was created. So `uid` and
`ems_ref` are created from VM's id and creation time
of snapshot.

app/models/manageiq/providers/vmware/cloud_manager/refresh_parser.rb

@@ -141,6 +141,7 @@ def parse_vm(vm)
       :name                => name,
       :vendor              => "vmware",
       :raw_power_state     => status,
+      :snapshots           => [parse_snapshot(vm)].compact,
 
       :hardware            => {
         :guest_os             => guest_os,
@@ -217,4 +218,21 @@ def parse_vapp_template(vapp_template)
 
     return uid, new_result
   end
+
+  def parse_snapshot(vm)
+    resp = @connection.get_snapshot_section(vm.id).data
+    if (snapshot_resp = resp.fetch_path(:body, :Snapshot))
+      {
+        :name        => "#{vm.name} (snapshot)",
+        :uid         => "#{vm.id}_#{snapshot_resp[:created]}",
+        :ems_ref     => "#{vm.id}_#{snapshot_resp[:created]}",
+        :parent_id   => vm.id,
+        :parent_uid  => vm.id,
+        :create_time => snapshot_resp[:created],
+        :total_size  => snapshot_resp[:size]
+      }
+    else
+      return nil
+    end
+  end
 end

spec/models/manageiq/providers/vmware/cloud_manager/refresher_spec.rb

@@ -40,6 +40,10 @@
   end
 
   it "will perform a full refresh" do
+    # Mock snapshot collection since VCR cassete does not contain those request yet.
+    # TODO: record a new VCR cassette when provider development is done.
+    allow_any_instance_of(ManageIQ::Providers::Vmware::CloudManager::RefreshParser).to receive(:parse_snapshot).and_return(nil)
+
     2.times do # Run twice to verify that a second run with existing data does not change anything
       @ems.reload
       VCR.use_cassette(described_class.name.underscore, :allow_unused_http_interactions => true) do
@@ -58,6 +62,18 @@
     end
   end
 
+  it "will perform refresh for snapshot" do
+    2.times do # Run twice to verify that a second run with existing data does not change anything
+      @ems.reload
+      VCR.use_cassette(described_class.name.underscore + '_snapshots') do
+        EmsRefresh.refresh(@ems)
+      end
+      @ems.reload
+
+      assert_specific_vm_with_snapshot
+    end
+  end
+
   def assert_table_counts
     expect(ExtManagementSystem.count).to eq(2) # cloud_manager + network_manager
     expect(Flavor.count).to eq(0)
@@ -348,4 +364,18 @@ def assert_specific_orchestration_template
     expect(@template.content.include?('ovf:Envelope')).to be_truthy
     expect(@template.md5).to eq('729bfcafe52065bdee376931efe104d9')
   end
+
+  def assert_specific_vm_with_snapshot
+    vm = ManageIQ::Providers::Vmware::CloudManager::Vm.find_by(:name => "saso-vm")
+
+    expect(vm.snapshots.first).not_to be_nil
+    expect(vm.snapshots.first).to have_attributes(
+      :ems_ref    => 'vm-f910f019-38a4-4d6a-a6cb-be403cc35ff3_2018-02-23T12:37:58.151+01:00',
+      :uid        => 'vm-f910f019-38a4-4d6a-a6cb-be403cc35ff3_2018-02-23T12:37:58.151+01:00',
+      :parent_uid => 'vm-f910f019-38a4-4d6a-a6cb-be403cc35ff3',
+      :name       => 'saso-vm (snapshot)',
+      :total_size => 21_474_836_480
+    )
+    expect(vm.snapshots.first.create_time.to_s).to eq('2018-02-23 11:37:58 UTC')
+  end
 end