1 files changed, 85 insertions, 0 deletions
diff --git a/spec/requests/api/task_completion_status_spec.rb b/spec/requests/api/task_completion_status_spec.rb
new file mode 100644
index 00000000000..ee2531197b1
--- /dev/null
+++ b/spec/requests/api/task_completion_status_spec.rb
@@ -0,0 +1,85 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'task completion status response' do
+  set(:user) { create(:user) }
+  set(:project) do
+    create(:project, :public, creator_id: user.id, namespace: user.namespace)
+  end
+
+  shared_examples 'taskable completion status provider' do |path|
+    samples = [
+        {
+            description: '',
+            expected_count: 0,
+            expected_completed_count: 0
+        },
+        {
+            description: 'Lorem ipsum',
+            expected_count: 0,
+            expected_completed_count: 0
+        },
+        {
+            description: %{- [ ] task 1
+              - [x] task 2 },
+            expected_count: 2,
+            expected_completed_count: 1
+        },
+        {
+            description: %{- [ ] task 1
+              - [ ] task 2 },
+            expected_count: 2,
+            expected_completed_count: 0
+        },
+        {
+            description: %{- [x] task 1
+              - [x] task 2 },
+            expected_count: 2,
+            expected_completed_count: 2
+        },
+        {
+            description: %{- [ ] task 1},
+            expected_count: 1,
+            expected_completed_count: 0
+        },
+        {
+            description: %{- [x] task 1},
+            expected_count: 1,
+            expected_completed_count: 1
+        }
+    ]
+    samples.each do |sample_data|
+      context "with a description of #{sample_data[:description].inspect}" do
+        before do
+          taskable.update!(description: sample_data[:description])
+
+          get api("#{path}?iids[]=#{taskable.iid}", user)
+        end
+
+        it { expect(response).to have_gitlab_http_status(200) }
+
+        it 'returns the expected results' do
+          expect(json_response).to be_an Array
+          expect(json_response).not_to be_empty
+
+          task_completion_status = json_response.first['task_completion_status']
+          expect(task_completion_status['count']).to eq(sample_data[:expected_count])
+          expect(task_completion_status['completed_count']).to eq(sample_data[:expected_completed_count])
+        end
+      end
+    end
+  end
+
+  context 'task list completion status for issues' do
+    it_behaves_like 'taskable completion status provider', '/issues' do
+      let(:taskable) { create(:issue, project: project, author: user) }
+    end
+  end
+
+  context 'task list completion status for merge_requests' do
+    it_behaves_like 'taskable completion status provider', '/merge_requests' do
+      let(:taskable) { create(:merge_request, source_project: project, target_project: project, author: user) }
+    end
+  end
+end