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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Pagination::Keyset::CursorBasedRequestContext do
let(:params) { { per_page: 2, cursor: 'eyJuYW1lIjoiR2l0TGFiIEluc3RhbmNlIiwiaWQiOiI1MiIsIl9rZCI6Im4ifQ==', order_by: :name, sort: :asc } }
let(:request) { double('request', url: 'http://localhost') }
let(:request_context) { double('request_context', header: nil, params: params, request: request) }
describe '#per_page' do
subject(:per_page) { described_class.new(request_context).per_page }
it { is_expected.to eq 2 }
end
describe '#cursor' do
subject(:cursor) { described_class.new(request_context).cursor }
it { is_expected.to eq 'eyJuYW1lIjoiR2l0TGFiIEluc3RhbmNlIiwiaWQiOiI1MiIsIl9rZCI6Im4ifQ==' }
end
describe '#order_by' do
subject(:order_by) { described_class.new(request_context).order_by }
it { is_expected.to eq({ name: :asc }) }
end
describe '#apply_headers' do
let(:request) { double('request', url: "http://#{Gitlab.config.gitlab.host}/api/v4/projects?per_page=3") }
let(:params) { { per_page: 3 } }
let(:request_context) { double('request_context', header: nil, params: params, request: request) }
let(:cursor_for_next_page) { 'eyJuYW1lIjoiSDVicCIsImlkIjoiMjgiLCJfa2QiOiJuIn0=' }
subject(:apply_headers) { described_class.new(request_context).apply_headers(cursor_for_next_page) }
it 'sets Link header with same host/path as the original request' do
orig_uri = URI.parse(request_context.request.url)
expect(request_context).to receive(:header).once do |name, header|
first_link, _ = /<([^>]+)>; rel="next"/.match(header).captures
uri = URI.parse(first_link)
expect(name).to eq('Link')
expect(uri.host).to eq(orig_uri.host)
expect(uri.path).to eq(orig_uri.path)
end
apply_headers
end
it 'sets Link header with a cursor to the next page' do
orig_uri = URI.parse(request_context.request.url)
expect(request_context).to receive(:header).once do |name, header|
first_link, _ = /<([^>]+)>; rel="next"/.match(header).captures
query = CGI.parse(URI.parse(first_link).query)
expect(name).to eq('Link')
expect(query.except('cursor')).to eq(CGI.parse(orig_uri.query).except('cursor'))
expect(query['cursor']).to eq([cursor_for_next_page])
end
apply_headers
end
end
end
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