Added spec for resource_store

1 files changed, 76 insertions, 0 deletions

diff --git a/spec/unit/util/dsc/resource_store.rb b/spec/unit/util/dsc/resource_store.rb
new file mode 100644
index 0000000000..a89e73fcaa
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+++ b/spec/unit/util/dsc/resource_store.rb
@@ -0,0 +1,76 @@
+#
+# Author:: Jay Mundrawala <jdm@chef.io>
+# Copyright:: Copyright (c) 2015 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 'chef/util/dsc/resource_store'
+
+describe Chef::Util::DSC::ResourceStore do
+  let(:resource_store) { Chef::Util::DSC::ResourceStore.new }
+  let(:resource_a) { {
+    'ResourceType' => 'AFoo',
+    'Name' => 'Foo',
+    'Module' => {'Name' => 'ModuleA'}
+    }
+  }
+
+  let(:resource_b) { {
+    'ResourceType' => 'BFoo',
+    'Name' => 'Foo',
+    'Module' => {'Name' => 'ModuleB'}
+    }
+  }
+
+  context 'when resources are not cached' do
+    context 'when calling #resources' do
+      it 'returns an empty array' do
+        expect(resource_store.resources).to eql([])
+      end
+    end
+
+    context 'when calling #find' do
+      it 'returns an empty list if it cannot find any matching resources' do
+        expect(resource_store).to receive(:query_resource).and_return([])
+        expect(resource_store.find('foo')).to eql([])
+      end
+
+      it 'returns the resource if it is found (comparisons are case insensitive)' do
+        expect(resource_store).to receive(:query_resource).and_return([resource_a])
+        expect(resource_store.find('foo')).to eql([resource_a])
+      end
+
+      it 'returns multiple resoures if they are found' do
+        expect(resource_store).to receive(:query_resource).and_return([resource_a, resource_b])
+        expect(resource_store.find('foo')).to include(resource_a, resource_b)
+      end
+
+      it 'deduplicates resources by ResourceName' do
+        expect(resource_store).to receive(:query_resource).and_return([resource_a, resource_a])
+        resource_store.find('foo')
+        expect(resource_store.resources).to eq([resource_a])
+      end
+    end
+  end
+
+  context 'when resources are cached' do
+    it 'recalls resources from the cache if present' do
+      expect(resource_store).not_to receive(:query_resource)
+      expect(resource_store).to receive(:resources).and_return([resource_a])
+      resource_store.find('foo')
+    end
+  end
+end