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* For easier modifications of ruby/spec by MRI developers. * .gitignore: track changes under spec. * spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec. These files can therefore be updated like any other file in MRI. Instructions are provided in spec/README. [Feature #13156] [ruby-core:79246] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
50 lines
1.5 KiB
Ruby
50 lines
1.5 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require 'bigdecimal'
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describe "BigDecimal#abs" do
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before :each do
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@one = BigDecimal("1")
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@zero = BigDecimal("0")
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@zero_pos = BigDecimal("+0")
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@zero_neg = BigDecimal("-0")
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@two = BigDecimal("2")
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@three = BigDecimal("3")
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@mixed = BigDecimal("1.23456789")
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@nan = BigDecimal("NaN")
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@infinity = BigDecimal("Infinity")
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@infinity_minus = BigDecimal("-Infinity")
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@one_minus = BigDecimal("-1")
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@frac_1 = BigDecimal("1E-99999")
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@frac_2 = BigDecimal("0.9E-99999")
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end
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it "returns the absolute value" do
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pos_int = BigDecimal("2E5555")
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neg_int = BigDecimal("-2E5555")
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pos_frac = BigDecimal("2E-9999")
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neg_frac = BigDecimal("-2E-9999")
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pos_int.abs.should == pos_int
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neg_int.abs.should == pos_int
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pos_frac.abs.should == pos_frac
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neg_frac.abs.should == pos_frac
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@one.abs.should == 1
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@two.abs.should == 2
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@three.abs.should == 3
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@mixed.abs.should == @mixed
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@one_minus.abs.should == @one
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end
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it "properly handles special values" do
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@infinity.abs.should == @infinity
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@infinity_minus.abs.should == @infinity
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@nan.abs.nan?.should == true # have to do it this way, since == doesn't work on NaN
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@zero.abs.should == 0
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@zero.abs.sign.should == BigDecimal::SIGN_POSITIVE_ZERO
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@zero_pos.abs.should == 0
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@zero_pos.abs.sign.should == BigDecimal::SIGN_POSITIVE_ZERO
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@zero_neg.abs.should == 0
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@zero_neg.abs.sign.should == BigDecimal::SIGN_POSITIVE_ZERO
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end
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end
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