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require_relative '../../spec_helper'
require 'bigdecimal'
describe "BigDecimal#frac" 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
@pos_int.frac.kind_of?(BigDecimal).should == true
@neg_int.frac.kind_of?(BigDecimal).should == true
@pos_frac.kind_of?(BigDecimal).should == true
@neg_frac.kind_of?(BigDecimal).should == true
end
it "returns the fractional part of the absolute value" do
@mixed.frac.should == BigDecimal("0.23456789")
@pos_frac.frac.should == @pos_frac
@neg_frac.frac.should == @neg_frac
end
it "returns 0 if the value is 0" do
@zero.frac.should == @zero
end
it "returns 0 if the value is an integer" do
@pos_int.frac.should == @zero
@neg_int.frac.should == @zero
end
it "correctly handles special values" do
@infinity.frac.should == @infinity
@infinity_neg.frac.should == @infinity_neg
@nan.frac.nan?.should == true
end
end
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