1 files changed, 42 insertions, 0 deletions
diff --git a/spec/services/update_merge_request_metrics_service_spec.rb b/spec/services/update_merge_request_metrics_service_spec.rb
new file mode 100644
index 00000000000..b5fb999381d
--- /dev/null
+++ b/spec/services/update_merge_request_metrics_service_spec.rb
@@ -0,0 +1,42 @@
+require 'rails_helper'
+
+describe MergeRequestMetricsService do
+  let(:metrics) { create(:merge_request).metrics }
+
+  describe '#merge' do
+    it 'updates metrics' do
+      user = create(:user)
+      service = described_class.new(metrics)
+      event = double(Event, author_id: user.id, created_at: Time.now)
+
+      service.merge(event)
+
+      expect(metrics.merged_by).to eq(user)
+      expect(metrics.merged_at).to eq(event.created_at)
+    end
+  end
+
+  describe '#close' do
+    it 'updates metrics' do
+      user = create(:user)
+      service = described_class.new(metrics)
+      event = double(Event, author_id: user.id, created_at: Time.now)
+
+      service.close(event)
+
+      expect(metrics.latest_closed_by).to eq(user)
+      expect(metrics.latest_closed_at).to eq(event.created_at)
+    end
+  end
+
+  describe '#reopen' do
+    it 'updates metrics' do
+      service = described_class.new(metrics)
+
+      service.reopen
+
+      expect(metrics.latest_closed_by).to be_nil
+      expect(metrics.latest_closed_at).to be_nil
+    end
+  end
+end