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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Graphql::Pagination::Keyset::QueryBuilder do
context 'when number of ordering fields is 0' do
it 'raises an error' do
expect { described_class.new(Issue.arel_table, [], {}, :after) }
.to raise_error(ArgumentError, 'No ordering scopes have been supplied')
end
end
describe '#conditions' do
let(:relation) { Issue.order(relative_position: :desc).order(:id) }
let(:order_list) { Gitlab::Graphql::Pagination::Keyset::OrderInfo.build_order_list(relation) }
let(:arel_table) { Issue.arel_table }
let(:builder) { described_class.new(arel_table, order_list, decoded_cursor, before_or_after) }
let(:before_or_after) { :after }
context 'when only a single ordering' do
let(:relation) { Issue.order(id: :desc) }
context 'when the value is nil' do
let(:decoded_cursor) { { 'id' => nil } }
it 'raises an error' do
expect { builder.conditions }
.to raise_error(Gitlab::Graphql::Errors::ArgumentError, 'Before/after cursor invalid: `nil` was provided as only sortable value')
end
end
context 'when value is not nil' do
let(:decoded_cursor) { { 'id' => 100 } }
let(:conditions) { builder.conditions }
context 'when :after' do
it 'generates the correct condition' do
expect(conditions.strip).to eq '("issues"."id" < 100)'
end
end
context 'when :before' do
let(:before_or_after) { :before }
it 'generates the correct condition' do
expect(conditions.strip).to eq '("issues"."id" > 100)'
end
end
end
end
context 'when two orderings' do
let(:decoded_cursor) { { 'relative_position' => 1500, 'id' => 100 } }
context 'when no values are nil' do
context 'when :after' do
it 'generates the correct condition' do
conditions = builder.conditions
expect(conditions).to include '"issues"."relative_position" < 1500'
expect(conditions).to include '"issues"."id" > 100'
expect(conditions).to include 'OR ("issues"."relative_position" IS NULL)'
end
end
context 'when :before' do
let(:before_or_after) { :before }
it 'generates the correct condition' do
conditions = builder.conditions
expect(conditions).to include '("issues"."relative_position" > 1500)'
expect(conditions).to include '"issues"."id" < 100'
expect(conditions).to include '"issues"."relative_position" = 1500'
end
end
end
context 'when first value is nil' do
let(:decoded_cursor) { { 'relative_position' => nil, 'id' => 100 } }
context 'when :after' do
it 'generates the correct condition' do
conditions = builder.conditions
expect(conditions).to include '"issues"."relative_position" IS NULL'
expect(conditions).to include '"issues"."id" > 100'
end
end
context 'when :before' do
let(:before_or_after) { :before }
it 'generates the correct condition' do
conditions = builder.conditions
expect(conditions).to include '"issues"."relative_position" IS NULL'
expect(conditions).to include '"issues"."id" < 100'
expect(conditions).to include 'OR ("issues"."relative_position" IS NOT NULL)'
end
end
end
end
context 'when sorting using LOWER' do
let(:relation) { Project.order(Arel::Table.new(:projects)['name'].lower.asc).order(:id) }
let(:arel_table) { Project.arel_table }
let(:decoded_cursor) { { 'name' => 'Test', 'id' => 100 } }
context 'when no values are nil' do
context 'when :after' do
it 'generates the correct condition' do
conditions = builder.conditions
expect(conditions).to include '(LOWER("projects"."name") > \'test\')'
expect(conditions).to include '"projects"."id" > 100'
expect(conditions).to include 'OR (LOWER("projects"."name") IS NULL)'
end
end
context 'when :before' do
let(:before_or_after) { :before }
it 'generates the correct condition' do
conditions = builder.conditions
expect(conditions).to include '(LOWER("projects"."name") < \'test\')'
expect(conditions).to include '"projects"."id" < 100'
expect(conditions).to include 'LOWER("projects"."name") = \'test\''
end
end
end
end
end
end
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