138 lines
4.6 KiB
Ruby
138 lines
4.6 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
# Use this for testing how a GraphQL query handles sorting and pagination.
|
|
# This is particularly important when using keyset pagination connection,
|
|
# which is the default for ActiveRecord relations, as certain sort keys
|
|
# might not be supportable.
|
|
#
|
|
# sort_param: the value to specify the sort
|
|
# data_path: the keys necessary to dig into the return GraphQL data to get the
|
|
# returned results
|
|
# first_param: number of items expected (like a page size)
|
|
# all_records: array of comparison data of all items sorted correctly
|
|
# pagination_query: method that specifies the GraphQL query
|
|
# pagination_results_data: method that extracts the sorted data used to compare against
|
|
# the expected results
|
|
#
|
|
# Example:
|
|
# describe 'sorting and pagination' do
|
|
# let_it_be(:sort_project) { create(:project, :public) }
|
|
# let(:data_path) { [:project, :issues] }
|
|
#
|
|
# def pagination_query(arguments)
|
|
# graphql_query_for(:project, { full_path: sort_project.full_path },
|
|
# query_nodes(:issues, :iid, include_pagination_info: true, args: arguments)
|
|
# )
|
|
# end
|
|
#
|
|
# # A method transforming nodes to data to match against
|
|
# # default: the identity function
|
|
# def pagination_results_data(issues)
|
|
# issues.map { |issue| issue['iid].to_i }
|
|
# end
|
|
#
|
|
# context 'when sorting by weight' do
|
|
# let_it_be(:issues) { make_some_issues_with_weights }
|
|
#
|
|
# context 'when ascending' do
|
|
# let(:ordered_issues) { issues.sort_by(&:weight) }
|
|
#
|
|
# it_behaves_like 'sorted paginated query' do
|
|
# let(:sort_param) { :WEIGHT_ASC }
|
|
# let(:first_param) { 2 }
|
|
# let(:all_records) { ordered_issues.map(&:iid) }
|
|
# end
|
|
# end
|
|
#
|
|
RSpec.shared_examples 'sorted paginated query' do |conditions = {}|
|
|
# Provided as a convenience when constructing queries using string concatenation
|
|
let(:page_info) { 'pageInfo { startCursor endCursor }' }
|
|
# Convenience for using default implementation of pagination_results_data
|
|
let(:node_path) { ['id'] }
|
|
|
|
it_behaves_like 'requires variables' do
|
|
let(:required_variables) { [:sort_param, :first_param, :all_records, :data_path, :current_user] }
|
|
end
|
|
|
|
describe do
|
|
let(:sort_argument) { graphql_args(sort: sort_param) }
|
|
let(:params) { sort_argument }
|
|
|
|
# Convenience helper for the large number of queries defined as a projection
|
|
# from some root value indexed by full_path to a collection of objects with IID
|
|
def nested_internal_id_query(root_field, parent, field, args, selection: :iid)
|
|
graphql_query_for(root_field, { full_path: parent.full_path },
|
|
query_nodes(field, selection, args: args, include_pagination_info: true)
|
|
)
|
|
end
|
|
|
|
def pagination_query(params)
|
|
raise('pagination_query(params) must be defined in the test, see example in comment') unless defined?(super)
|
|
|
|
super
|
|
end
|
|
|
|
def pagination_results_data(nodes)
|
|
if defined?(super)
|
|
super(nodes)
|
|
else
|
|
nodes.map { |n| n.dig(*node_path) }
|
|
end
|
|
end
|
|
|
|
def results
|
|
nodes = graphql_dig_at(graphql_data(fresh_response_data), *data_path, :nodes)
|
|
pagination_results_data(nodes)
|
|
end
|
|
|
|
def end_cursor
|
|
graphql_dig_at(graphql_data(fresh_response_data), *data_path, :page_info, :end_cursor)
|
|
end
|
|
|
|
def start_cursor
|
|
graphql_dig_at(graphql_data(fresh_response_data), *data_path, :page_info, :start_cursor)
|
|
end
|
|
|
|
let(:query) { pagination_query(params) }
|
|
|
|
before do
|
|
post_graphql(query, current_user: current_user)
|
|
end
|
|
|
|
context 'when sorting' do
|
|
it 'sorts correctly' do
|
|
expect(results).to match all_records
|
|
end
|
|
|
|
context 'when paginating' do
|
|
let(:params) { sort_argument.merge(first: first_param) }
|
|
let(:first_page) { all_records.first(first_param) }
|
|
let(:rest) { all_records.drop(first_param) }
|
|
|
|
it 'paginates correctly' do
|
|
expect(results).to match first_page
|
|
|
|
fwds = pagination_query(sort_argument.merge(after: end_cursor))
|
|
post_graphql(fwds, current_user: current_user)
|
|
|
|
expect(results).to match rest
|
|
|
|
bwds = pagination_query(sort_argument.merge(before: start_cursor))
|
|
post_graphql(bwds, current_user: current_user)
|
|
|
|
expect(results).to match first_page
|
|
end
|
|
end
|
|
|
|
context 'when last and sort params are present', if: conditions[:is_reversible] do
|
|
let(:params) { sort_argument.merge(last: 1) }
|
|
|
|
it 'fetches last elements without error' do
|
|
post_graphql(pagination_query(params), current_user: current_user)
|
|
|
|
expect(results.first).to match all_records.last
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|