1 files changed, 17 insertions, 0 deletions
diff --git a/spec/models/concerns/faster_cache_keys_spec.rb b/spec/models/concerns/faster_cache_keys_spec.rb
new file mode 100644
index 00000000000..8d3f94267fa
--- /dev/null
+++ b/spec/models/concerns/faster_cache_keys_spec.rb
@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe FasterCacheKeys do
+  describe '#cache_key' do
+    it 'returns a String' do
+      # We're using a fixed string here so it's easier to set an expectation for
+      # the resulting cache key.
+      time = '2016-08-08 16:39:00+02'
+      issue = build(:issue, updated_at: time)
+      issue.extend(described_class)
+
+      expect(issue).to receive(:id).and_return(1)
+
+      expect(issue.cache_key).to eq("issues/1-#{time}")
+    end
+  end
+end