2 files changed, 83 insertions, 26 deletions
diff --git a/spec/support/shared_examples/services/boards/boards_list_service_shared_examples.rb b/spec/support/shared_examples/services/boards/boards_list_service_shared_examples.rb
index 8f7c08ed625..0e2bddc19ab 100644
--- a/spec/support/shared_examples/services/boards/boards_list_service_shared_examples.rb
+++ b/spec/support/shared_examples/services/boards/boards_list_service_shared_examples.rb
@@ -1,32 +1,8 @@
 # frozen_string_literal: true
 
 RSpec.shared_examples 'boards list service' do
-  context 'when parent does not have a board' do
-    it 'creates a new parent board' do
-      expect { service.execute }.to change(parent.boards, :count).by(1)
-    end
-
-    it 'delegates the parent board creation to Boards::CreateService' do
-      expect_any_instance_of(Boards::CreateService).to receive(:execute).once
-
-      service.execute
-    end
-
-    context 'when create_default_board is false' do
-      it 'does not create a new parent board' do
-        expect { service.execute(create_default_board: false) }.not_to change(parent.boards, :count)
-      end
-    end
-  end
-
-  context 'when parent has a board' do
-    before do
-      create(:board, resource_parent: parent)
-    end
-
-    it 'does not create a new board' do
-      expect { service.execute }.not_to change(parent.boards, :count)
-    end
+  it 'does not create a new board' do
+    expect { service.execute }.not_to change(parent.boards, :count)
   end
 
   it 'returns parent boards' do
diff --git a/spec/support/shared_examples/services/boards/lists_create_service_shared_examples.rb b/spec/support/shared_examples/services/boards/lists_create_service_shared_examples.rb
new file mode 100644
index 00000000000..3be002c2126
--- /dev/null
+++ b/spec/support/shared_examples/services/boards/lists_create_service_shared_examples.rb
@@ -0,0 +1,81 @@
+# frozen_string_literal: true
+
+RSpec.shared_examples 'board lists create service' do
+  describe '#execute' do
+    let_it_be(:user) { create(:user) }
+
+    before_all do
+      parent.add_developer(user)
+    end
+
+    subject(:service) { described_class.new(parent, user, label_id: label.id) }
+
+    context 'when board lists is empty' do
+      it 'creates a new list at beginning of the list' do
+        response = service.execute(board)
+
+        expect(response.success?).to eq(true)
+        expect(response.payload[:list].position).to eq 0
+      end
+    end
+
+    context 'when board lists has the done list' do
+      it 'creates a new list at beginning of the list' do
+        response = service.execute(board)
+
+        expect(response.success?).to eq(true)
+        expect(response.payload[:list].position).to eq 0
+      end
+    end
+
+    context 'when board lists has labels lists' do
+      it 'creates a new list at end of the lists' do
+        create_list(position: 0)
+        create_list(position: 1)
+
+        response = service.execute(board)
+
+        expect(response.success?).to eq(true)
+        expect(response.payload[:list].position).to eq 2
+      end
+    end
+
+    context 'when board lists has label and done lists' do
+      it 'creates a new list at end of the label lists' do
+        list1 = create_list(position: 0)
+
+        list2 = service.execute(board).payload[:list]
+
+        expect(list1.reload.position).to eq 0
+        expect(list2.reload.position).to eq 1
+      end
+    end
+
+    context 'when provided label does not belong to the parent' do
+      it 'returns an error' do
+        label = create(:label, name: 'in-development')
+        service = described_class.new(parent, user, label_id: label.id)
+
+        response = service.execute(board)
+
+        expect(response.success?).to eq(false)
+        expect(response.errors).to include('Label not found')
+      end
+    end
+
+    context 'when backlog param is sent' do
+      it 'creates one and only one backlog list' do
+        service = described_class.new(parent, user, 'backlog' => true)
+        list = service.execute(board).payload[:list]
+
+        expect(list.list_type).to eq('backlog')
+        expect(list.position).to be_nil
+        expect(list).to be_valid
+
+        another_backlog = service.execute(board).payload[:list]
+
+        expect(another_backlog).to eq list
+      end
+    end
+  end
+end