1 files changed, 80 insertions, 0 deletions
diff --git a/spec/graphql/mutations/boards/lists/create_spec.rb b/spec/graphql/mutations/boards/lists/create_spec.rb
new file mode 100644
index 00000000000..1a881ac81e8
--- /dev/null
+++ b/spec/graphql/mutations/boards/lists/create_spec.rb
@@ -0,0 +1,80 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Boards::Lists::Create do
+  include GraphqlHelpers
+
+  let_it_be(:group) { create(:group, :private) }
+  let_it_be(:board) { create(:board, group: group) }
+  let_it_be(:user)  { create(:user) }
+  let_it_be(:guest) { create(:user) }
+
+  let(:current_user) { user }
+  let(:mutation) { described_class.new(object: nil, context: { current_user: current_user }, field: nil) }
+  let(:list_create_params) { {} }
+
+  before_all do
+    group.add_reporter(user)
+    group.add_guest(guest)
+  end
+
+  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 backlog or labelId is required')
+    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 backlog or labelId is required')
+    end
+  end
+
+  describe '#resolve' do
+    context 'with proper permissions' do
+      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 }.from(0).to(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 issue board list for labels' do
+          expect { subject }.to change { board.lists.count }.from(1).to(2)
+
+          new_list = subject[:list]
+
+          expect(new_list.title).to eq dev_label.title
+          expect(new_list.position).to eq 0
+        end
+      end
+    end
+
+    context 'without proper permissions' do
+      let(:current_user) { guest }
+
+      it 'raises an error' do
+        expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+      end
+    end
+  end
+end