Refactor RepositoryCache to make it usable in other classes

1 files changed, 36 insertions, 0 deletions

diff --git a/spec/lib/gitlab/repository_cache_spec.rb b/spec/lib/gitlab/repository_cache_spec.rb
new file mode 100644
index 00000000000..f4789421663
--- /dev/null
+++ b/spec/lib/gitlab/repository_cache_spec.rb
@@ -0,0 +1,36 @@
+require 'spec_helper'
+
+describe Gitlab::RepositoryCache do
+  let(:backend) { double('backend').as_null_object }
+  let(:project) { create(:project) }
+  let(:repository) { project.repository }
+  let(:namespace) { "#{repository.full_path}:#{project.id}" }
+  let(:cache) { described_class.new(repository, backend) }
+
+  describe '#cache_key' do
+    it 'includes the namespace' do
+      expect(cache.cache_key(:foo)).to eq "foo:#{namespace}"
+    end
+  end
+
+  describe '#expire' do
+    it 'expires the given key from the cache' do
+      cache.expire(:foo)
+      expect(backend).to have_received(:delete).with("foo:#{namespace}")
+    end
+  end
+
+  describe '#fetch' do
+    it 'fetches the given key from the cache' do
+      cache.fetch(:bar)
+      expect(backend).to have_received(:fetch).with("bar:#{namespace}")
+    end
+
+    it 'accepts a block' do
+      p = -> {}
+
+      cache.fetch(:baz, &p)
+      expect(backend).to have_received(:fetch).with("baz:#{namespace}", &p)
+    end
+  end
+end