require File.expand_path('../../../spec_helper', __FILE__)

describe "Bignum#remainder" do
  it "returns the remainder of dividing self by other" do
    a = bignum_value(79)
    a.remainder(2).should == 1
    a.remainder(97.345).should be_close(46.5674996147722, TOLERANCE)
    a.remainder(bignum_value).should == 79
  end

  it "raises a ZeroDivisionError if other is zero and not a Float" do
    lambda { bignum_value(66).remainder(0) }.should raise_error(ZeroDivisionError)
  end

  ruby_version_is ""..."1.9" do
    it "does NOT raise ZeroDivisionError if other is zero and is a Float" do
      a = bignum_value(7)
      b = bignum_value(32)
      a.remainder(0.0).to_s.should == 'NaN'
      b.remainder(-0.0).to_s.should == 'NaN'
    end
  end

  ruby_version_is "1.9" do
    it "does raises ZeroDivisionError if other is zero and a Float" do
      a = bignum_value(7)
      b = bignum_value(32)
      lambda { a.remainder(0.0) }.should raise_error(ZeroDivisionError)
      lambda { b.remainder(-0.0) }.should raise_error(ZeroDivisionError)
    end
  end
end