1 files changed, 151 insertions, 0 deletions
diff --git a/spec/lib/bulk_imports/groups/pipelines/milestones_pipeline_spec.rb b/spec/lib/bulk_imports/groups/pipelines/milestones_pipeline_spec.rb
new file mode 100644
index 00000000000..f0c34c65257
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+++ b/spec/lib/bulk_imports/groups/pipelines/milestones_pipeline_spec.rb
@@ -0,0 +1,151 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe BulkImports::Groups::Pipelines::MilestonesPipeline do
+  let_it_be(:user) { create(:user) }
+  let_it_be(:group) { create(:group) }
+  let_it_be(:cursor) { 'cursor' }
+  let_it_be(:timestamp) { Time.new(2020, 01, 01).utc }
+  let_it_be(:bulk_import) { create(:bulk_import, user: user) }
+
+  let(:entity) do
+    create(
+      :bulk_import_entity,
+      bulk_import: bulk_import,
+      source_full_path: 'source/full/path',
+      destination_name: 'My Destination Group',
+      destination_namespace: group.full_path,
+      group: group
+    )
+  end
+
+  let(:context) { BulkImports::Pipeline::Context.new(entity) }
+
+  subject { described_class.new(context) }
+
+  def milestone_data(title)
+    {
+      'title' => title,
+      'description' => 'desc',
+      'state' => 'closed',
+      'start_date' => '2020-10-21',
+      'due_date' => '2020-10-22',
+      'created_at' => timestamp.to_s,
+      'updated_at' => timestamp.to_s
+    }
+  end
+
+  def extracted_data(title:, has_next_page:, cursor: nil)
+    page_info = {
+      'end_cursor' => cursor,
+      'has_next_page' => has_next_page
+    }
+
+    BulkImports::Pipeline::ExtractedData.new(data: [milestone_data(title)], page_info: page_info)
+  end
+
+  before do
+    group.add_owner(user)
+  end
+
+  describe '#run' do
+    it 'imports group milestones' do
+      first_page = extracted_data(title: 'milestone1', has_next_page: true, cursor: cursor)
+      last_page = extracted_data(title: 'milestone2', has_next_page: false)
+
+      allow_next_instance_of(BulkImports::Common::Extractors::GraphqlExtractor) do |extractor|
+        allow(extractor)
+          .to receive(:extract)
+          .and_return(first_page, last_page)
+      end
+
+      expect { subject.run }.to change(Milestone, :count).by(2)
+
+      expect(group.milestones.pluck(:title)).to contain_exactly('milestone1', 'milestone2')
+
+      milestone = group.milestones.last
+
+      expect(milestone.description).to eq('desc')
+      expect(milestone.state).to eq('closed')
+      expect(milestone.start_date.to_s).to eq('2020-10-21')
+      expect(milestone.due_date.to_s).to eq('2020-10-22')
+      expect(milestone.created_at).to eq(timestamp)
+      expect(milestone.updated_at).to eq(timestamp)
+    end
+  end
+
+  describe '#after_run' do
+    context 'when extracted data has next page' do
+      it 'updates tracker information and runs pipeline again' do
+        data = extracted_data(title: 'milestone', has_next_page: true, cursor: cursor)
+
+        expect(subject).to receive(:run)
+
+        subject.after_run(data)
+
+        tracker = entity.trackers.find_by(relation: :milestones)
+
+        expect(tracker.has_next_page).to eq(true)
+        expect(tracker.next_page).to eq(cursor)
+      end
+    end
+
+    context 'when extracted data has no next page' do
+      it 'updates tracker information and does not run pipeline' do
+        data = extracted_data(title: 'milestone', has_next_page: false)
+
+        expect(subject).not_to receive(:run)
+
+        subject.after_run(data)
+
+        tracker = entity.trackers.find_by(relation: :milestones)
+
+        expect(tracker.has_next_page).to eq(false)
+        expect(tracker.next_page).to be_nil
+      end
+    end
+  end
+
+  describe '#load' do
+    it 'creates the milestone' do
+      data = milestone_data('milestone')
+
+      expect { subject.load(context, data) }.to change(Milestone, :count).by(1)
+    end
+
+    context 'when user is not authorized to create the milestone' do
+      before do
+        allow(user).to receive(:can?).with(:admin_milestone, group).and_return(false)
+      end
+
+      it 'raises NotAllowedError' do
+        data = extracted_data(title: 'milestone', has_next_page: false)
+
+        expect { subject.load(context, data) }.to raise_error(::BulkImports::Pipeline::NotAllowedError)
+      end
+    end
+  end
+
+  describe 'pipeline parts' do
+    it { expect(described_class).to include_module(BulkImports::Pipeline) }
+    it { expect(described_class).to include_module(BulkImports::Pipeline::Runner) }
+
+    it 'has extractors' do
+      expect(described_class.get_extractor)
+        .to eq(
+          klass: BulkImports::Common::Extractors::GraphqlExtractor,
+          options: {
+            query: BulkImports::Groups::Graphql::GetMilestonesQuery
+          }
+        )
+    end
+
+    it 'has transformers' do
+      expect(described_class.transformers)
+        .to contain_exactly(
+          { klass: BulkImports::Common::Transformers::ProhibitedAttributesTransformer, options: nil }
+        )
+    end
+  end
+end