1 files changed, 110 insertions, 0 deletions
diff --git a/qa/spec/resource/reusable_collection_spec.rb b/qa/spec/resource/reusable_collection_spec.rb
new file mode 100644
index 00000000000..9116462b396
--- /dev/null
+++ b/qa/spec/resource/reusable_collection_spec.rb
@@ -0,0 +1,110 @@
+# frozen_string_literal: true
+
+RSpec.describe QA::Resource::ReusableCollection do
+  let(:reusable_resource_class) do
+    Class.new do
+      prepend QA::Resource::Reusable
+
+      attr_reader :removed
+
+      def self.name
+        'FooReusableResource'
+      end
+
+      def comparable
+        self.class.name
+      end
+
+      def remove_via_api!
+        @removed = true
+      end
+
+      def exists?() end
+    end
+  end
+
+  let(:another_reusable_resource_class) do
+    Class.new(reusable_resource_class) do
+      def self.name
+        'BarReusableResource'
+      end
+    end
+  end
+
+  let(:a_resource_instance) { reusable_resource_class.new }
+  let(:another_resource_instance) { another_reusable_resource_class.new }
+
+  it 'is a singleton class' do
+    expect { described_class.new }.to raise_error(NoMethodError)
+  end
+
+  subject(:collection) do
+    described_class.instance
+  end
+
+  before do
+    described_class.register_resource_classes do |c|
+      reusable_resource_class.register(c)
+      another_reusable_resource_class.register(c)
+    end
+
+    collection.resource_classes = {
+      'FooReusableResource' => {
+        reuse_as_identifier: {
+          resource: a_resource_instance
+        }
+      },
+      'BarReusableResource' => {
+        another_reuse_as_identifier: {
+          resource: another_resource_instance
+        }
+      }
+    }
+
+    allow(a_resource_instance).to receive(:validate_reuse)
+    allow(another_resource_instance).to receive(:validate_reuse)
+  end
+
+  after do
+    collection.resource_classes = {}
+  end
+
+  describe '#each_resource' do
+    it 'yields each resource and reuse_as identifier in the collection' do
+      expect { |blk| collection.each_resource(&blk) }
+        .to yield_successive_args(
+          [:reuse_as_identifier, a_resource_instance],
+          [:another_reuse_as_identifier, another_resource_instance]
+        )
+    end
+  end
+
+  describe '.remove_all_via_api!' do
+    before do
+      allow(a_resource_instance).to receive(:exists?).and_return(true)
+      allow(another_resource_instance).to receive(:exists?).and_return(true)
+    end
+
+    it 'removes each instance of each resource class' do
+      described_class.remove_all_via_api!
+
+      expect(a_resource_instance.removed).to be true
+      expect(another_resource_instance.removed).to be true
+    end
+  end
+
+  describe '.validate_resource_reuse' do
+    it 'validates each instance of each resource class' do
+      expect(a_resource_instance).to receive(:validate_reuse)
+      expect(another_resource_instance).to receive(:validate_reuse)
+
+      described_class.validate_resource_reuse
+    end
+  end
+
+  describe '.register_resource_classes' do
+    it 'yields the hash of resource classes in the collection' do
+      expect { |blk| described_class.register_resource_classes(&blk) }.to yield_with_args(collection.resource_classes)
+    end
+  end
+end