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diff --git a/spec/unit/chef_fs/data_handler/data_handler_base_spec.rb b/spec/unit/chef_fs/data_handler/data_handler_base_spec.rb
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+++ b/spec/unit/chef_fs/data_handler/data_handler_base_spec.rb
@@ -0,0 +1,58 @@
+#
+# Author:: Jeremy Miller (<jm@chef.io>)
+# Copyright:: Copyright 2014-2018, Chef Software Inc.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require "spec_helper"
+require "lib/chef/chef_fs/data_handler/data_handler_base"
+
+describe Chef::ChefFS::DataHandler::DataHandlerBase do
+ describe "#normalize_hash" do
+ let(:some_item) do
+ { "name" => "grizzly",
+ "gender" => "female",
+ "age" => 3
+ }
+ end
+
+ let(:item_defaults) do
+ { "family" => "ursidae",
+ "hibernate" => true,
+ "avg_lifespan_years" => 22,
+ }
+ end
+
+ let(:normalized) do
+ { "name" => "grizzly",
+ "gender" => "female",
+ "family" => "ursidae",
+ "hibernate" => true,
+ "avg_lifespan_years" => 22,
+ "age" => 3
+ }
+ end
+
+ let(:handler) { described_class.new }
+
+ it "normalizes the Hash, filling in defaults" do
+ expect(handler.normalize_hash(some_item, item_defaults)).to eq(normalized)
+ end
+
+ it "handles being passed a nil value instead of Hash" do
+ expect(handler.normalize_hash(nil, item_defaults)).to eq(item_defaults)
+ end
+ end
+end