1 files changed, 80 insertions, 0 deletions

diff --git a/spec/services/issues/duplicate_service_spec.rb b/spec/services/issues/duplicate_service_spec.rb
new file mode 100644
index 00000000000..089e77cc88b
--- /dev/null
+++ b/spec/services/issues/duplicate_service_spec.rb
@@ -0,0 +1,80 @@
+require 'spec_helper'
+
+describe Issues::DuplicateService do
+  let(:user) { create(:user) }
+  let(:canonical_project) { create(:project) }
+  let(:duplicate_project) { create(:project) }
+
+  let(:canonical_issue) { create(:issue, project: canonical_project) }
+  let(:duplicate_issue) { create(:issue, project: duplicate_project) }
+
+  subject { described_class.new(duplicate_project, user, {}) }
+
+  describe '#execute' do
+    context 'when the issues passed are the same' do
+      it 'does nothing' do
+        expect(subject).not_to receive(:close_service)
+        expect(SystemNoteService).not_to receive(:mark_duplicate_issue)
+        expect(SystemNoteService).not_to receive(:mark_canonical_issue_of_duplicate)
+
+        subject.execute(duplicate_issue, duplicate_issue)
+      end
+    end
+
+    context 'when the user cannot update the duplicate issue' do
+      before do
+        canonical_project.add_reporter(user)
+      end
+
+      it 'does nothing' do
+        expect(subject).not_to receive(:close_service)
+        expect(SystemNoteService).not_to receive(:mark_duplicate_issue)
+        expect(SystemNoteService).not_to receive(:mark_canonical_issue_of_duplicate)
+
+        subject.execute(duplicate_issue, canonical_issue)
+      end
+    end
+
+    context 'when the user cannot comment on the canonical issue' do
+      before do
+        duplicate_project.add_reporter(user)
+      end
+
+      it 'does nothing' do
+        expect(subject).not_to receive(:close_service)
+        expect(SystemNoteService).not_to receive(:mark_duplicate_issue)
+        expect(SystemNoteService).not_to receive(:mark_canonical_issue_of_duplicate)
+
+        subject.execute(duplicate_issue, canonical_issue)
+      end
+    end
+
+    context 'when the user can mark the issue as a duplicate' do
+      before do
+        canonical_project.add_reporter(user)
+        duplicate_project.add_reporter(user)
+      end
+
+      it 'closes the duplicate issue' do
+        subject.execute(duplicate_issue, canonical_issue)
+
+        expect(duplicate_issue.reload).to be_closed
+        expect(canonical_issue.reload).to be_open
+      end
+
+      it 'adds a system note to the duplicate issue' do
+        expect(SystemNoteService)
+          .to receive(:mark_duplicate_issue).with(duplicate_issue, duplicate_project, user, canonical_issue)
+
+        subject.execute(duplicate_issue, canonical_issue)
+      end
+
+      it 'adds a system note to the canonical issue' do
+        expect(SystemNoteService)
+          .to receive(:mark_canonical_issue_of_duplicate).with(canonical_issue, canonical_project, user, duplicate_issue)
+
+        subject.execute(duplicate_issue, canonical_issue)
+      end
+    end
+  end
+end