criteria_spec.rb

require "spec_helper"

describe Mongoid::Criteria do

  describe "#max" do

    before do
      10.times do |n|
        Person.create(:title => "Sir", :age => (n * 10), :aliases => ["D", "Durran"])
      end
    end

    after do
      Person.delete_all
    end

    it "provides max for the field provided" do
      Person.max(:age).should == 90.0
    end

  end

  describe "#min" do

    before do
      10.times do |n|
        Person.create(:title => "Sir", :age => (n * 10), :aliases => ["D", "Durran"])
      end
    end

    after do
      Person.delete_all
    end

    it "provides min for the field provided" do
      Person.min(:age).should == 0.0
    end

  end

  describe "#sum" do

    before do
      10.times do |n|
        Person.create(:title => "Sir", :age => 5, :aliases => ["D", "Durran"])
      end
    end

    after do
      Person.delete_all
    end

    it "provides sum for the field provided" do
      Person.where(:age.gt => 3).sum(:age).should == 50.0
    end

  end

end