require 'bigdecimal'

describe :bigdecimal_to_int, shared: true do
  it "raises FloatDomainError if BigDecimal is infinity or NaN" do
    -> { BigDecimal("Infinity").send(@method) }.should raise_error(FloatDomainError)
    -> { BigDecimal("NaN").send(@method) }.should raise_error(FloatDomainError)
  end

  it "returns Integer otherwise" do
    BigDecimal("3E-20001").send(@method).should == 0
    BigDecimal("2E4000").send(@method).should == 2 * 10 ** 4000
    BigDecimal("2").send(@method).should == 2
    BigDecimal("2E10").send(@method).should == 20000000000
    BigDecimal("3.14159").send(@method).should == 3
  end
end