Add `to_reference` for models that support references

Now there is a single source of information for which attribute a model
uses to be referenced, and its special character.

1 files changed, 24 insertions, 0 deletions

diff --git a/spec/models/external_issue_spec.rb b/spec/models/external_issue_spec.rb
new file mode 100644
index 00000000000..7744610db78
--- /dev/null
+++ b/spec/models/external_issue_spec.rb
@@ -0,0 +1,24 @@
+require 'spec_helper'
+
+describe ExternalIssue do
+  let(:project) { double('project', to_reference: 'namespace1/project1') }
+  let(:issue)   { described_class.new('EXT-1234', project) }
+
+  describe 'modules' do
+    subject { described_class }
+
+    it { is_expected.to include_module(Referable) }
+  end
+
+  describe '#to_reference' do
+    it 'returns a String reference to the object' do
+      expect(issue.to_reference).to eq issue.id
+    end
+  end
+
+  describe '#title' do
+    it 'returns a title' do
+      expect(issue.title).to eq "External Issue #{issue}"
+    end
+  end
+end