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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
32 lines
945 B
Ruby
32 lines
945 B
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require 'bigdecimal'
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describe "BigDecimal#infinite?" do
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it "returns 1 if self is Infinity" do
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BigDecimal("Infinity").infinite?.should == 1
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end
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it "returns -1 if self is -Infinity" do
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BigDecimal("-Infinity").infinite?.should == -1
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end
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it "returns not true otherwise" do
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e2_plus = BigDecimal("2E40001")
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e3_minus = BigDecimal("3E-20001")
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really_small_zero = BigDecimal("0E-200000000")
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really_big_zero = BigDecimal("0E200000000000")
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e3_minus.infinite?.should == nil
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e2_plus.infinite?.should == nil
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really_small_zero.infinite?.should == nil
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really_big_zero.infinite?.should == nil
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BigDecimal("0.000000000000000000000000").infinite?.should == nil
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end
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it "returns not true if self is NaN" do
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# NaN is a special value which is neither finite nor infinite.
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nan = BigDecimal("NaN")
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nan.infinite?.should == nil
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end
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end
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