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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Graphql::Pagination::ExternallyPaginatedArrayConnection do
let(:prev_cursor) { 1 }
let(:next_cursor) { 6 }
let(:values) { [2, 3, 4, 5] }
let(:all_nodes) { Gitlab::Graphql::ExternallyPaginatedArray.new(prev_cursor, next_cursor, *values) }
let(:arguments) { {} }
subject(:connection) do
described_class.new(all_nodes, { max_page_size: values.size }.merge(arguments))
end
describe '#nodes' do
let(:paged_nodes) { connection.nodes }
it_behaves_like 'connection with paged nodes' do
let(:paged_nodes_size) { values.size }
end
context 'when after or before is specified, they are ignored' do
# after and before are not used to filter the array, as they
# were already used to directly fetch the external array
it_behaves_like 'connection with paged nodes' do
let(:arguments) { { after: next_cursor } }
let(:paged_nodes_size) { values.size }
end
it_behaves_like 'connection with paged nodes' do
let(:arguments) { { before: prev_cursor } }
let(:paged_nodes_size) { values.size }
end
end
end
describe '#start_cursor' do
it 'returns the prev cursor' do
expect(connection.start_cursor).to eq(prev_cursor)
end
context 'when there is none' do
let(:prev_cursor) { nil }
it 'returns nil' do
expect(connection.start_cursor).to eq(nil)
end
end
end
describe '#end_cursor' do
it 'returns the next cursor' do
expect(connection.end_cursor).to eq(next_cursor)
end
context 'when there is none' do
let(:next_cursor) { nil }
it 'returns nil' do
expect(connection.end_cursor).to eq(nil)
end
end
end
describe '#has_next_page' do
it 'returns true when there is a end cursor' do
expect(connection.has_next_page).to eq(true)
end
context 'there is no end cursor' do
let(:next_cursor) { nil }
it 'returns false' do
expect(connection.has_next_page).to eq(false)
end
end
end
describe '#has_previous_page' do
it 'returns true when there is a start cursor' do
expect(connection.has_previous_page).to eq(true)
end
context 'there is no start cursor' do
let(:prev_cursor) { nil }
it 'returns false' do
expect(connection.has_previous_page).to eq(false)
end
end
end
end
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