117 lines
3.3 KiB
Ruby
117 lines
3.3 KiB
Ruby
require 'spec_helper'
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describe Gitlab::Graphql::Connections::KeysetConnection do
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let(:nodes) { Project.all.order(id: :asc) }
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let(:arguments) { {} }
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subject(:connection) do
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described_class.new(nodes, arguments, max_page_size: 3)
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end
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def encoded_property(value)
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Base64.strict_encode64(value.to_s)
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end
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describe '#cursor_from_nodes' do
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let(:project) { create(:project) }
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it 'returns an encoded ID' do
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expect(connection.cursor_from_node(project))
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.to eq(encoded_property(project.id))
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end
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context 'when an order was specified' do
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let(:nodes) { Project.order(:updated_at) }
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it 'returns the encoded value of the order' do
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expect(connection.cursor_from_node(project))
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.to eq(encoded_property(project.updated_at))
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end
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end
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end
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describe '#sliced_nodes' do
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let(:projects) { create_list(:project, 4) }
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context 'when before is passed' do
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let(:arguments) { { before: encoded_property(projects[1].id) } }
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it 'only returns the project before the selected one' do
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expect(subject.sliced_nodes).to contain_exactly(projects.first)
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end
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context 'when the sort order is descending' do
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let(:nodes) { Project.all.order(id: :desc) }
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it 'returns the correct nodes' do
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expect(subject.sliced_nodes).to contain_exactly(*projects[2..-1])
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end
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end
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end
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context 'when after is passed' do
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let(:arguments) { { after: encoded_property(projects[1].id) } }
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it 'only returns the project before the selected one' do
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expect(subject.sliced_nodes).to contain_exactly(*projects[2..-1])
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end
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context 'when the sort order is descending' do
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let(:nodes) { Project.all.order(id: :desc) }
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it 'returns the correct nodes' do
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expect(subject.sliced_nodes).to contain_exactly(projects.first)
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end
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end
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end
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context 'when both before and after are passed' do
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let(:arguments) do
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{
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after: encoded_property(projects[1].id),
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before: encoded_property(projects[3].id)
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}
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end
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it 'returns the expected set' do
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expect(subject.sliced_nodes).to contain_exactly(projects[2])
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end
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end
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end
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describe '#paged_nodes' do
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let!(:projects) { create_list(:project, 5) }
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it 'returns the collection limited to max page size' do
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expect(subject.paged_nodes.size).to eq(3)
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end
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it 'is a loaded memoized array' do
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expect(subject.paged_nodes).to be_an(Array)
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expect(subject.paged_nodes.object_id).to eq(subject.paged_nodes.object_id)
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end
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context 'when `first` is passed' do
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let(:arguments) { { first: 2 } }
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it 'returns only the first elements' do
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expect(subject.paged_nodes).to contain_exactly(projects.first, projects.second)
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end
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end
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context 'when `last` is passed' do
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let(:arguments) { { last: 2 } }
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it 'returns only the last elements' do
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expect(subject.paged_nodes).to contain_exactly(projects[3], projects[4])
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end
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end
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context 'when both are passed' do
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let(:arguments) { { first: 2, last: 2 } }
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it 'raises an error' do
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expect { subject.paged_nodes }.to raise_error(Gitlab::Graphql::Errors::ArgumentError)
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end
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end
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end
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end
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