# require 'bigdecimal'
# require 'rational'

describe "BigDecimal#/" do
  @method = :/
  before do
    @one = BigDecimal("1")
    @zero = BigDecimal("0")
    @zero_plus = BigDecimal("+0")
    @zero_minus = BigDecimal("-0")
    @two = BigDecimal("2")
    @three = BigDecimal("3")
    @eleven = BigDecimal("11")
    @nan = BigDecimal("NaN")
    @infinity = BigDecimal("Infinity")
    @infinity_minus = BigDecimal("-Infinity")
    @one_minus = BigDecimal("-1")
    # @frac_1 = BigDecimal("1E-99999")
    # @frac_2 = BigDecimal("0.9E-99999")
    @float = 1.48
    @rational = Rational(17,3)
  end

  it "returns a / b" do
    @two.send(@method, @one, *@object).should == @two
    @one.send(@method, @two, *@object).should == BigDecimal("0.5")
    # @eleven.send(@method, @three, *@object).should be_close(@three + (@two / @three), TOLERANCE)
    @one.send(@method, @one_minus, *@object).should == @one_minus
    @one_minus.send(@method, @one_minus, *@object).should == @one
    # @frac_2.send(@method, @frac_1, *@object).should == BigDecimal("0.9")
    # @frac_1.send(@method, @frac_1, *@object).should == @one
    # @one.send(@method, BigDecimal('-2E5555'), *@object).should == BigDecimal('-0.5E-5555')
    # @one.send(@method, BigDecimal('2E-5555'), *@object).should == BigDecimal('0.5E5555')
  end

  # it "returns 0 if divided by Infinity" do
  #   @zero.send(@method, @infinity, *@object).should == 0
  #   @frac_2.send(@method, @infinity, *@object).should == 0
  # end

  # it "returns (+|-) Infinity if (+|-) Infinity divided by one" do
  #   @infinity_minus.send(@method, @one, *@object).should == @infinity_minus
  #   @infinity.send(@method, @one, *@object).should == @infinity
  #   @infinity_minus.send(@method, @one_minus, *@object).should == @infinity
  # end

  # it "returns NaN if Infinity / ((+|-) Infinity)" do
  #   @infinity.send(@method, @infinity_minus, *@object).nan?.should == true
  #   @infinity_minus.send(@method, @infinity, *@object).nan?.should == true
  # end

  # it "returns (+|-) Infinity if divided by zero" do
  #   @one.send(@method, @zero, *@object).should == @infinity
  #   @one.send(@method, @zero_plus, *@object).should == @infinity
  #   @one.send(@method, @zero_minus, *@object).should == @infinity_minus
  # end

  it "returns NaN if zero is divided by zero" do
    @zero.send(@method, @zero, *@object).nan?.should == true
    @zero_minus.send(@method, @zero_plus, *@object).nan?.should == true
    @zero_plus.send(@method, @zero_minus, *@object).nan?.should == true
  end

  # context "with a Float" do
  #   ruby_version_is "".."1.9" do
  #     it "returns a Float" do
  #       result = @eleven.send(@method, @float, *@object)
  #       result.should be_close(7.4324324324324325, TOLERANCE)
  #       result.kind_of?(Float).should == true
  #     end
  #   end

  #   ruby_version_is "2.0.0" do
  #     it "returns a BigDecimal" do
  #       result = @eleven.send(@method, @float, *@object)
  #       result.should be_close(7.4324324324324325, TOLERANCE)
  #       result.should be_an_instance_of(BigDecimal)
  #     end
  #   end
  # end

  # context "with a Rational" do
  #   ruby_version_is ""..."1.9" do
  #     it "returns a Float" do
  #       result = @eleven.send(@method, @rational, *@object)
  #       result.should be_close(1.94117647058824, TOLERANCE)
  #       result.kind_of?(Float).should == true
  #     end
  #   end

  #   ruby_version_is "1.9"..."2.0" do
  #     it "raises a TypeError" do
  #       lambda { @eleven.send(@method, @rational, *@object) }.should raise_error(TypeError)
  #     end
  #   end

  #   ruby_version_is "2.0.0" do
  #     it "returns a BigDecimal" do
  #       result = @eleven.send(@method, @rational, *@object)
  #       result.should be_close(1.94117647058824, TOLERANCE)
  #       result.kind_of?(BigDecimal).should == true
  #     end
  #   end
  # end
end
