1 files changed, 84 insertions, 0 deletions
diff --git a/spec/unit/provider/dsc_resource_spec.rb b/spec/unit/provider/dsc_resource_spec.rb
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+++ b/spec/unit/provider/dsc_resource_spec.rb
@@ -0,0 +1,84 @@
+#
+# Author:: Jay Mundrawala (<jdm@chef.io>)
+#
+# Copyright:: Copyright (c) 2014 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 'chef'
+require 'spec_helper'
+
+describe Chef::Provider::DscResource do
+  let (:events) { Chef::EventDispatch::Dispatcher.new }
+  let (:run_context) { Chef::RunContext.new(node, {}, events) }
+  let (:resource) { Chef::Resource::DscResource.new("dscresource", run_context) }
+  let (:provider) do
+    Chef::Provider::DscResource.new(resource, run_context)
+  end
+
+  context 'when Powershell does not support Invoke-DscResource' do
+    let (:node) {
+      node = Chef::Node.new
+      node.automatic[:languages][:powershell][:version] = '4.0'
+      node
+    }
+
+    it 'raises a NoProviderAvailable exception' do
+      expect(provider).not_to receive(:meta_configuration)
+      expect{provider.run_action(:run)}.to raise_error(
+              Chef::Exceptions::NoProviderAvailable, /5\.0\.10018\.0/)
+    end
+  end
+
+  context 'when Powershell supports Invoke-DscResource' do
+    let (:node) {
+      node = Chef::Node.new
+      node.automatic[:languages][:powershell][:version] = '5.0.10018.0'
+      node
+    }
+
+    context 'when RefreshMode is not set to Disabled' do
+      let (:meta_configuration) { {'RefreshMode' => 'AnythingElse'}}
+
+      it 'raises an exception' do
+        expect(provider).to receive(:meta_configuration).and_return(
+                                                             meta_configuration)
+        expect { provider.run_action(:run) }.to raise_error(
+          Chef::Exceptions::NoProviderAvailable, /Disabled/)
+      end
+    end
+
+    context 'when RefreshMode is set to Disabled' do
+      let (:meta_configuration) { {'RefreshMode' => 'Disabled'}}
+
+      it 'does not update the resource if it is up to date' do
+        expect(provider).to receive(:meta_configuration).and_return(
+                                                             meta_configuration)
+        expect(provider).to receive(:test_resource).and_return(true)
+        provider.run_action(:run)
+        expect(resource).not_to be_updated
+      end
+
+      it 'converges the resource if it is not up to date' do
+        expect(provider).to receive(:meta_configuration).and_return(
+                                                             meta_configuration)
+        expect(provider).to receive(:test_resource).and_return(false)
+        expect(provider).to receive(:set_resource)
+        provider.run_action(:run)
+        expect(resource).to be_updated
+      end
+    end
+  end
+end