require_relative '../../spec_helper'

ruby_version_is ""..."3.4" do
  require 'bigdecimal'

  describe "BigDecimal#fix" do
      before :each do
        @zero = BigDecimal("0")
        @mixed = BigDecimal("1.23456789")
        @pos_int = BigDecimal("2E5555")
        @neg_int = BigDecimal("-2E5555")
        @pos_frac = BigDecimal("2E-9999")
        @neg_frac = BigDecimal("-2E-9999")

        @infinity = BigDecimal("Infinity")
        @infinity_neg = BigDecimal("-Infinity")
        @nan = BigDecimal("NaN")
        @zero_pos = BigDecimal("+0")
        @zero_neg = BigDecimal("-0")
      end

    it "returns a BigDecimal" do
      BigDecimal("2E100000000").fix.kind_of?(BigDecimal).should == true
      BigDecimal("2E-999").kind_of?(BigDecimal).should == true
    end

    it "returns the integer part of the absolute value" do
      a = BigDecimal("2E1000")
      a.fix.should == a
      b = BigDecimal("-2E1000")
      b.fix.should == b
      BigDecimal("0.123456789E5").fix.should == BigDecimal("0.12345E5")
      BigDecimal("-0.123456789E5").fix.should == BigDecimal("-0.12345E5")
    end

    it "correctly handles special values" do
      @infinity.fix.should == @infinity
      @infinity_neg.fix.should == @infinity_neg
      @nan.fix.should.nan?
    end

    it "returns 0 if the absolute value is < 1" do
      BigDecimal("0.99999").fix.should == 0
      BigDecimal("-0.99999").fix.should == 0
      BigDecimal("0.000000001").fix.should == 0
      BigDecimal("-0.00000001").fix.should == 0
      BigDecimal("-1000000").fix.should_not == 0
      @zero.fix.should == 0
      @zero_pos.fix.should == @zero_pos
      @zero_neg.fix.should == @zero_neg
    end

    it "does not allow any arguments" do
      -> {
        @mixed.fix(10)
      }.should raise_error(ArgumentError)
    end

  end
end
