require_relative '../../spec_helper'

describe "Integer#ceildiv" do
  it "returns a quotient of division which is rounded up to the nearest integer" do
    0.ceildiv(3).should.eql?(0)
    1.ceildiv(3).should.eql?(1)
    3.ceildiv(3).should.eql?(1)
    4.ceildiv(3).should.eql?(2)

    4.ceildiv(-3).should.eql?(-1)
    -4.ceildiv(3).should.eql?(-1)
    -4.ceildiv(-3).should.eql?(2)

    3.ceildiv(1.2).should.eql?(3)
    3.ceildiv(6/5r).should.eql?(3)

    (10**100-11).ceildiv(10**99-1).should.eql?(10)
    (10**100-9).ceildiv(10**99-1).should.eql?(11)
  end
end
