1 files changed, 79 insertions, 0 deletions
diff --git a/spec/lib/banzai/reference_parser/issue_parser_spec.rb b/spec/lib/banzai/reference_parser/issue_parser_spec.rb
new file mode 100644
index 00000000000..514c752546d
--- /dev/null
+++ b/spec/lib/banzai/reference_parser/issue_parser_spec.rb
@@ -0,0 +1,79 @@
+require 'spec_helper'
+
+describe Banzai::ReferenceParser::IssueParser, lib: true do
+  include ReferenceParserHelpers
+
+  let(:project) { create(:empty_project, :public) }
+  let(:user) { create(:user) }
+  let(:issue) { create(:issue, project: project) }
+  subject { described_class.new(project, user) }
+  let(:link) { empty_html_link }
+
+  describe '#nodes_visible_to_user' do
+    context 'when the link has a data-issue attribute' do
+      before do
+        link['data-issue'] = issue.id.to_s
+      end
+
+      it 'returns the nodes when the user can read the issue' do
+        expect(Ability.abilities).to receive(:allowed?).
+          with(user, :read_issue, issue).
+          and_return(true)
+
+        expect(subject.nodes_visible_to_user(user, [link])).to eq([link])
+      end
+
+      it 'returns an empty Array when the user can not read the issue' do
+        expect(Ability.abilities).to receive(:allowed?).
+          with(user, :read_issue, issue).
+          and_return(false)
+
+        expect(subject.nodes_visible_to_user(user, [link])).to eq([])
+      end
+    end
+
+    context 'when the link does not have a data-issue attribute' do
+      it 'returns an empty Array' do
+        expect(subject.nodes_visible_to_user(user, [link])).to eq([])
+      end
+    end
+
+    context 'when the project uses an external issue tracker' do
+      it 'returns all nodes' do
+        link = double(:link)
+
+        expect(project).to receive(:external_issue_tracker).and_return(true)
+
+        expect(subject.nodes_visible_to_user(user, [link])).to eq([link])
+      end
+    end
+  end
+
+  describe '#referenced_by' do
+    context 'when the link has a data-issue attribute' do
+      context 'using an existing issue ID' do
+        before do
+          link['data-issue'] = issue.id.to_s
+        end
+
+        it 'returns an Array of issues' do
+          expect(subject.referenced_by([link])).to eq([issue])
+        end
+
+        it 'returns an empty Array when the list of nodes is empty' do
+          expect(subject.referenced_by([link])).to eq([issue])
+          expect(subject.referenced_by([])).to eq([])
+        end
+      end
+    end
+  end
+
+  describe '#issues_for_nodes' do
+    it 'returns a Hash containing the issues for a list of nodes' do
+      link['data-issue'] = issue.id.to_s
+      nodes = [link]
+
+      expect(subject.issues_for_nodes(nodes)).to eq({ issue.id => issue })
+    end
+  end
+end