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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe KeysetPaginationHelpers, feature_category: :api do
include described_class
let(:headers) { { 'LINK' => %(<#{url}>; rel="#{rel}") } }
let(:response) { instance_double('HTTParty::Response', headers: headers) }
let(:rel) { 'next' }
let(:url) do
'http://127.0.0.1:3000/api/v4/projects/7/audit_eve' \
'nts?cursor=eyJpZCI6IjYyMjAiLCJfa2QiOiJuIn0%3D&id=7&o' \
'rder_by=id&page=1&pagination=keyset&per_page=2'
end
describe '#pagination_links' do
subject { pagination_links(response) }
let(:expected_result) { [{ url: url, rel: rel }] }
it { is_expected.to eq expected_result }
context 'with a partially malformed LINK header' do
# malformed as the regxe is expecting the url to be surrounded by `<>`
let(:headers) do
{ 'LINK' => %(<#{url}>; rel="next", GARBAGE, #{url}; rel="prev") }
end
it { is_expected.to eq expected_result }
end
context 'with a malformed LINK header' do
# malformed as the regxe is expecting the url to be surrounded by `<>`
let(:headers) { { 'LINK' => %(rel="next", GARBAGE, #{url}; rel="prev") } }
let(:expected_result) { [] }
it { is_expected.to eq expected_result }
end
end
describe '#pagination_params_from_next_url' do
subject { pagination_params_from_next_url(response) }
let(:expected_result) do
{
'cursor' => 'eyJpZCI6IjYyMjAiLCJfa2QiOiJuIn0=',
'id' => '7',
'order_by' => 'id',
'page' => '1',
'pagination' => 'keyset',
'per_page' => '2'
}
end
it { is_expected.to eq expected_result }
context 'with both prev and next rel links' do
let(:prev_url) do
'http://127.0.0.1:3000/api/v4/projects/7/audit_eve' \
'nts?cursor=foocursor&id=8&o' \
'rder_by=id&page=0&pagination=keyset&per_page=2'
end
let(:headers) do
{ 'LINK' => %(<#{url}>; rel="next", <#{prev_url}>; rel="prev") }
end
it { is_expected.to eq expected_result }
end
context 'with a partially malformed LINK header' do
# malformed as the regxe is expecting the url to be surrounded by `<>`
let(:headers) do
{ 'LINK' => %(<#{url}>; rel="next", GARBAGE, #{url}; rel="prev") }
end
it { is_expected.to eq expected_result }
end
context 'with a malformed LINK header' do
# malformed as the regxe is expecting the url to be surrounded by `<>`
let(:headers) { { 'LINK' => %(rel="next", GARBAGE, #{url}; rel="prev") } }
it { is_expected.to be nil }
end
end
end
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