require 'helper' module Arel module Nodes class TestUnaryOperation < Minitest::Test def test_construct operation = UnaryOperation.new :-, 1 assert_equal :-, operation.operator assert_equal 1, operation.expr end def test_operation_alias operation = UnaryOperation.new :-, 1 aliaz = operation.as('zomg') assert_kind_of As, aliaz assert_equal operation, aliaz.left assert_equal 'zomg', aliaz.right end def test_operation_ordering operation = UnaryOperation.new :-, 1 ordering = operation.desc assert_kind_of Descending, ordering assert_equal operation, ordering.expr assert ordering.descending? end def test_equality_with_same_ivars array = [UnaryOperation.new(:-, 1), UnaryOperation.new(:-, 1)] assert_equal 1, array.uniq.size end def test_inequality_with_different_ivars array = [UnaryOperation.new(:-, 1), UnaryOperation.new(:-, 2)] assert_equal 2, array.uniq.size end end end end