129 lines
4.5 KiB
Ruby
129 lines
4.5 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Gitlab::Pagination::GitalyKeysetPager do
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let(:pager) { described_class.new(request_context, project) }
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let_it_be(:project) { create(:project, :repository) }
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let(:request_context) { double("request context") }
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let(:finder) { double("branch finder") }
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let(:custom_port) { 8080 }
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let(:incoming_api_projects_url) { "#{Gitlab.config.gitlab.url}:#{custom_port}/api/v4/projects" }
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before do
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stub_config_setting(port: custom_port)
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end
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describe '.paginate' do
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let(:base_query) { { per_page: 2 } }
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let(:query) { base_query }
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before do
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allow(request_context).to receive(:params).and_return(query)
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allow(request_context).to receive(:header)
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end
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shared_examples_for 'offset pagination' do
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let(:paginated_array) { double 'paginated array' }
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let(:branches) { [] }
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it 'uses offset pagination' do
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expect(finder).to receive(:execute).and_return(branches)
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expect(Kaminari).to receive(:paginate_array).with(branches).and_return(paginated_array)
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expect_next_instance_of(Gitlab::Pagination::OffsetPagination) do |offset_pagination|
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expect(offset_pagination).to receive(:paginate).with(paginated_array)
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end
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pager.paginate(finder)
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end
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end
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context 'with branch_list_keyset_pagination feature off' do
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before do
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stub_feature_flags(branch_list_keyset_pagination: false)
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end
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context 'without keyset pagination option' do
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it_behaves_like 'offset pagination'
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end
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context 'with keyset pagination option' do
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let(:query) { base_query.merge(pagination: 'keyset') }
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it_behaves_like 'offset pagination'
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end
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end
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context 'with branch_list_keyset_pagination feature on' do
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let(:fake_request) { double(url: "#{incoming_api_projects_url}?#{query.to_query}") }
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let(:branch1) { double 'branch', name: 'branch1' }
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let(:branch2) { double 'branch', name: 'branch2' }
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let(:branch3) { double 'branch', name: 'branch3' }
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before do
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stub_feature_flags(branch_list_keyset_pagination: project)
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end
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context 'without keyset pagination option' do
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context 'when first page is requested' do
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let(:branches) { [branch1, branch2, branch3] }
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it 'keyset pagination is used with offset headers' do
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allow(request_context).to receive(:request).and_return(fake_request)
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allow(project.repository).to receive(:branch_count).and_return(branches.size)
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expect(finder).to receive(:execute).with(gitaly_pagination: true).and_return(branches)
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expect(request_context).to receive(:header).with('X-Per-Page', '2')
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expect(request_context).to receive(:header).with('X-Page', '1')
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expect(request_context).to receive(:header).with('X-Next-Page', '2')
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expect(request_context).to receive(:header).with('X-Prev-Page', '')
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expect(request_context).to receive(:header).with('Link', kind_of(String))
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expect(request_context).to receive(:header).with('X-Total', '3')
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expect(request_context).to receive(:header).with('X-Total-Pages', '2')
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pager.paginate(finder)
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end
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end
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context 'when second page is requested' do
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let(:base_query) { { per_page: 2, page: 2 } }
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it_behaves_like 'offset pagination'
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end
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end
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context 'with keyset pagination option' do
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let(:query) { base_query.merge(pagination: 'keyset') }
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before do
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allow(request_context).to receive(:request).and_return(fake_request)
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expect(finder).to receive(:execute).with(gitaly_pagination: true).and_return(branches)
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end
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context 'when next page could be available' do
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let(:branches) { [branch1, branch2] }
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let(:expected_next_page_link) { %Q(<#{incoming_api_projects_url}?#{query.merge(page_token: branch2.name).to_query}>; rel="next") }
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it 'uses keyset pagination and adds link headers' do
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expect(request_context).to receive(:header).with('Link', expected_next_page_link)
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pager.paginate(finder)
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end
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end
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context 'when the current page is the last page' do
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let(:branches) { [branch1] }
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it 'uses keyset pagination without link headers' do
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expect(request_context).not_to receive(:header).with('Link', anything)
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pager.paginate(finder)
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end
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end
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end
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end
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end
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end
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