1 files changed, 77 insertions, 0 deletions
diff --git a/spec/requests/api/graphql/mutations/boards/lists/destroy_spec.rb b/spec/requests/api/graphql/mutations/boards/lists/destroy_spec.rb
new file mode 100644
index 00000000000..42f690f53ed
--- /dev/null
+++ b/spec/requests/api/graphql/mutations/boards/lists/destroy_spec.rb
@@ -0,0 +1,77 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Boards::Lists::Destroy do
+  include GraphqlHelpers
+
+  let_it_be(:current_user, reload: true) { create(:user) }
+  let_it_be(:project, reload: true) { create(:project) }
+  let_it_be(:board) { create(:board, project: project) }
+  let_it_be(:list) { create(:list, board: board) }
+  let(:mutation) do
+    variables = {
+      list_id: GitlabSchema.id_from_object(list).to_s
+    }
+
+    graphql_mutation(:destroy_board_list, variables)
+  end
+
+  subject { post_graphql_mutation(mutation, current_user: current_user) }
+
+  def mutation_response
+    graphql_mutation_response(:destroy_board_list)
+  end
+
+  context 'when the user does not have permission' do
+    it_behaves_like 'a mutation that returns a top-level access error'
+
+    it 'does not destroy the list' do
+      expect { subject }.not_to change { List.count }
+    end
+  end
+
+  context 'when the user has permission' do
+    before do
+      project.add_maintainer(current_user)
+    end
+
+    context 'when given id is not for a list' do
+      let_it_be(:list) { build_stubbed(:issue, project: project) }
+
+      it 'returns an error' do
+        subject
+
+        expect(graphql_errors.first['message']).to include('does not represent an instance of List')
+      end
+    end
+
+    context 'when everything is ok' do
+      it 'destroys the list' do
+        expect { subject }.to change { List.count }.from(2).to(1)
+      end
+
+      it 'returns an empty list' do
+        post_graphql_mutation(mutation, current_user: current_user)
+
+        expect(mutation_response).to have_key('list')
+        expect(mutation_response['list']).to be_nil
+      end
+    end
+
+    context 'when the list is not destroyable' do
+      let_it_be(:list) { create(:list, board: board, list_type: :backlog) }
+
+      it 'does not destroy the list' do
+        expect { subject }.not_to change { List.count }.from(3)
+      end
+
+      it 'returns an error and not nil list' do
+        subject
+
+        expect(mutation_response['errors']).not_to be_empty
+        expect(mutation_response['list']).not_to be_nil
+      end
+    end
+  end
+end