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# frozen_string_literal: true
# TODO https://gitlab.com/gitlab-org/gitlab/issues/35104
require 'spec_helper'
describe Gitlab::Graphql::Connections::Keyset::LegacyKeysetConnection do
describe 'old keyset_connection' do
let(:described_class) { Gitlab::Graphql::Connections::Keyset::Connection }
let(:nodes) { Project.all.order(id: :asc) }
let(:arguments) { {} }
subject(:connection) do
described_class.new(nodes, arguments, max_page_size: 3)
end
before do
stub_feature_flags(graphql_keyset_pagination: false)
end
def encoded_property(value)
Base64Bp.urlsafe_encode64(value.to_s, padding: false)
end
describe '#cursor_from_nodes' do
let(:project) { create(:project) }
it 'returns an encoded ID' do
expect(connection.cursor_from_node(project))
.to eq(encoded_property(project.id))
end
context 'when an order was specified' do
let(:nodes) { Project.order(:updated_at) }
it 'returns the encoded value of the order' do
expect(connection.cursor_from_node(project))
.to eq(encoded_property(project.updated_at))
end
end
end
describe '#sliced_nodes' do
let(:projects) { create_list(:project, 4) }
context 'when before is passed' do
let(:arguments) { { before: encoded_property(projects[1].id) } }
it 'only returns the project before the selected one' do
expect(subject.sliced_nodes).to contain_exactly(projects.first)
end
context 'when the sort order is descending' do
let(:nodes) { Project.all.order(id: :desc) }
it 'returns the correct nodes' do
expect(subject.sliced_nodes).to contain_exactly(*projects[2..-1])
end
end
end
context 'when after is passed' do
let(:arguments) { { after: encoded_property(projects[1].id) } }
it 'only returns the project before the selected one' do
expect(subject.sliced_nodes).to contain_exactly(*projects[2..-1])
end
context 'when the sort order is descending' do
let(:nodes) { Project.all.order(id: :desc) }
it 'returns the correct nodes' do
expect(subject.sliced_nodes).to contain_exactly(projects.first)
end
end
end
context 'when both before and after are passed' do
let(:arguments) do
{
after: encoded_property(projects[1].id),
before: encoded_property(projects[3].id)
}
end
it 'returns the expected set' do
expect(subject.sliced_nodes).to contain_exactly(projects[2])
end
end
end
describe '#paged_nodes' do
let!(:projects) { create_list(:project, 5) }
it 'returns the collection limited to max page size' do
expect(subject.paged_nodes.size).to eq(3)
end
it 'is a loaded memoized array' do
expect(subject.paged_nodes).to be_an(Array)
expect(subject.paged_nodes.object_id).to eq(subject.paged_nodes.object_id)
end
context 'when `first` is passed' do
let(:arguments) { { first: 2 } }
it 'returns only the first elements' do
expect(subject.paged_nodes).to contain_exactly(projects.first, projects.second)
end
end
context 'when `last` is passed' do
let(:arguments) { { last: 2 } }
it 'returns only the last elements' do
expect(subject.paged_nodes).to contain_exactly(projects[3], projects[4])
end
end
context 'when both are passed' do
let(:arguments) { { first: 2, last: 2 } }
it 'raises an error' do
expect { subject.paged_nodes }.to raise_error(Gitlab::Graphql::Errors::ArgumentError)
end
end
end
end
end
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