# frozen_string_literal: true

require_relative "../helper"

class Arel::Nodes::SumTest < Arel::Spec
  describe "as" do
    it "should alias the sum" do
      table = Arel::Table.new :users
      _(table[:id].sum.as("foo").to_sql).must_be_like %{
        SUM("users"."id") AS foo
      }
    end
  end

  describe "equality" do
    it "is equal with equal ivars" do
      array = [Arel::Nodes::Sum.new("foo"), Arel::Nodes::Sum.new("foo")]
      assert_equal 1, array.uniq.size
    end

    it "is not equal with different ivars" do
      array = [Arel::Nodes::Sum.new("foo"), Arel::Nodes::Sum.new("foo!")]
      assert_equal 2, array.uniq.size
    end
  end

  describe "order" do
    it "should order the sum" do
      table = Arel::Table.new :users
      _(table[:id].sum.desc.to_sql).must_be_like %{
        SUM("users"."id") DESC
      }
    end
  end
end
