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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Pagination::Keyset::InOperatorOptimization::OrderByColumnData do
let(:arel_table) { Issue.arel_table }
let(:column) do
Gitlab::Pagination::Keyset::ColumnOrderDefinition.new(
attribute_name: :id,
column_expression: arel_table[:id],
order_expression: arel_table[:id].desc
)
end
subject(:column_data) { described_class.new(column, 'column_alias', arel_table) }
describe '#arel_column' do
it 'delegates to column_expression' do
expect(column_data.arel_column).to eq(column.column_expression)
end
end
describe '#column_for_projection' do
it 'returns the expression with AS using the original column name' do
expect(column_data.column_for_projection.to_sql).to eq('"issues"."id" AS id')
end
end
describe '#projection' do
it 'returns the expression with AS using the specified column lias' do
expect(column_data.projection.to_sql).to eq('"issues"."id" AS column_alias')
end
end
end
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