1 files changed, 83 insertions, 0 deletions
diff --git a/spec/support/shared_examples/graphql/mutations/boards_list_create_shared_examples.rb b/spec/support/shared_examples/graphql/mutations/boards_list_create_shared_examples.rb
new file mode 100644
index 00000000000..b096a5e17c0
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+++ b/spec/support/shared_examples/graphql/mutations/boards_list_create_shared_examples.rb
@@ -0,0 +1,83 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.shared_examples 'board lists create mutation' do
+  include GraphqlHelpers
+
+  let_it_be(:user) { create(:user) }
+
+  let(:mutation) { described_class.new(object: nil, context: { current_user: user }, field: nil) }
+  let(:list_create_params) { {} }
+
+  subject { mutation.resolve(board_id: board.to_global_id.to_s, **list_create_params) }
+
+  describe '#ready?' do
+    it 'raises an error if required arguments are missing' do
+      expect { mutation.ready?(board_id: 'some id') }
+        .to raise_error(Gitlab::Graphql::Errors::ArgumentError, /one and only one of/)
+    end
+
+    it 'raises an error if too many required arguments are specified' do
+      expect { mutation.ready?(board_id: 'some id', backlog: true, label_id: 'some label') }
+        .to raise_error(Gitlab::Graphql::Errors::ArgumentError, /one and only one of/)
+    end
+  end
+
+  describe '#resolve' do
+    context 'with proper permissions' do
+      before_all do
+        group.add_reporter(user)
+      end
+
+      describe 'backlog list' do
+        let(:list_create_params) { { backlog: true } }
+
+        it 'creates one and only one backlog' do
+          expect { subject }.to change { board.lists.backlog.count }.by(1)
+          expect(board.lists.backlog.first.list_type).to eq 'backlog'
+
+          backlog_id = board.lists.backlog.first.id
+
+          expect { subject }.not_to change { board.lists.backlog.count }
+          expect(board.lists.backlog.last.id).to eq backlog_id
+        end
+      end
+
+      describe 'label list' do
+        let_it_be(:dev_label) do
+          create(:group_label, title: 'Development', color: '#FFAABB', group: group)
+        end
+
+        let(:list_create_params) { { label_id: dev_label.to_global_id.to_s } }
+
+        it 'creates a new label board list' do
+          expect { subject }.to change { board.lists.count }.by(1)
+
+          new_list = subject[:list]
+
+          expect(new_list.title).to eq dev_label.title
+          expect(new_list.position).to eq 0
+        end
+
+        context 'when label not found' do
+          let(:list_create_params) { { label_id: "gid://gitlab/Label/#{non_existing_record_id}" } }
+
+          it 'returns an error' do
+            expect(subject[:errors]).to include 'Label not found'
+          end
+        end
+      end
+    end
+
+    context 'without proper permissions' do
+      before_all do
+        group.add_guest(user)
+      end
+
+      it 'raises an error' do
+        expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+      end
+    end
+  end
+end