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ruby--ruby/spec/ruby/library/bigdecimal/plus_spec.rb
eregon 1d15d5f080 Move spec/rubyspec to spec/ruby for consistency
* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-09-20 20:18:52 +00:00

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1.3 KiB
Ruby

require File.expand_path('../../../spec_helper', __FILE__)
require 'bigdecimal'
describe "BigDecimal#+" do
before :each do
@one = BigDecimal("1")
@zero = BigDecimal("0")
@two = BigDecimal("2")
@three = BigDecimal("3")
@ten = BigDecimal("10")
@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")
end
it "returns a + b" do
(@two + @one).should == @three
(@one + @two).should == @three
(@one + @one_minus).should == @zero
(@zero + @one).should == @one
(@ten + @one).should == @eleven
(@frac_1 + @frac_2).should == BigDecimal("1.9E-99999")
(@frac_2 + @frac_1).should == BigDecimal("1.9E-99999")
(@frac_1 + @frac_1).should == BigDecimal("2E-99999")
end
it "returns NaN if NaN is involved" do
(@one + @nan).nan?.should == true
(@nan + @one).nan?.should == true
end
it "returns Infinity or -Infinity if these are involved" do
(@zero + @infinity).should == @infinity
(@frac_2 + @infinity).should == @infinity
(@two + @infinity_minus).should == @infinity_minus
end
it "returns NaN if Infinity + (- Infinity)" do
(@infinity + @infinity_minus).nan?.should == true
end
end