Add shindo tests for volume models and collection.

tests/hp/models/block_storage/volume_tests.rb

@@ -0,0 +1,21 @@
+Shindo.tests("Fog::BlockStorage[:hp] | volumes", ['hp', 'block_storage']) do
+
+  model_tests(Fog::BlockStorage[:hp].volumes, {:name => "fogvoltests", :description => "fogvoltests-desc", :size => 1}, true)
+
+  tests("new volume") do
+    @volume = Fog::BlockStorage[:hp].volumes.create(:name => "testvol", :size => 1)
+    @volume.wait_for { ready? } unless Fog.mocking?
+
+    test("get(#{@volume.id})") do
+      Fog::BlockStorage[:hp].volumes.get(@volume.id) != nil?
+    end
+
+    test("has_attachments?") do
+      @volume.has_attachments? == false
+    end
+    after do
+      @volume.destroy
+    end
+  end
+
+end

tests/hp/requests/block_storage/volume_tests.rb

@@ -2,12 +2,12 @@ Shindo.tests('Fog::BlockStorage[:hp] | volume requests', ['hp', 'block_storage']
 
   @volume_format = {
     'status'             => String,
-    'displayDescription' => String,
+    'displayDescription' => Fog::Nullable::String,
     'availabilityZone'   => String,
-    'displayName'        => String,
+    'displayName'        => Fog::Nullable::String,
     'attachments'        => [Fog::Nullable::Hash],
     'volumeType'         => Fog::Nullable::String,
-    'snapshotId'         => String,
+    'snapshotId'         => Fog::Nullable::String,
     'size'               => Integer,
     'id'                 => Integer,
     'createdAt'          => String,