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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
36 lines
1.7 KiB
Ruby
36 lines
1.7 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require 'bigdecimal'
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describe "BigDecimal.mode" do
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#the default value of BigDecimal exception constants is false
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after :each do
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BigDecimal.mode(BigDecimal::EXCEPTION_NaN, false)
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BigDecimal.mode(BigDecimal::EXCEPTION_INFINITY, false)
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BigDecimal.mode(BigDecimal::EXCEPTION_UNDERFLOW, false)
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BigDecimal.mode(BigDecimal::EXCEPTION_OVERFLOW, false)
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BigDecimal.mode(BigDecimal::EXCEPTION_ZERODIVIDE, false)
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end
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it "returns the appropriate value and continue the computation if the flag is false" do
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BigDecimal("NaN").add(BigDecimal("1"),0).nan?.should == true
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BigDecimal("0").add(BigDecimal("Infinity"),0).should == BigDecimal("Infinity")
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BigDecimal("1").quo(BigDecimal("0")).should == BigDecimal("Infinity")
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end
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it "returns Infinity when too big" do
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BigDecimal("1E11111111111111111111").should == BigDecimal("Infinity")
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(BigDecimal("1E1000000000000000000")**10).should == BigDecimal("Infinity")
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end
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it "raise an exception if the flag is true" do
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BigDecimal.mode(BigDecimal::EXCEPTION_NaN, true)
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lambda { BigDecimal("NaN").add(BigDecimal("1"),0) }.should raise_error(FloatDomainError)
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BigDecimal.mode(BigDecimal::EXCEPTION_INFINITY, true)
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lambda { BigDecimal("0").add(BigDecimal("Infinity"),0) }.should raise_error(FloatDomainError)
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BigDecimal.mode(BigDecimal::EXCEPTION_ZERODIVIDE, true)
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lambda { BigDecimal("1").quo(BigDecimal("0")) }.should raise_error(FloatDomainError)
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BigDecimal.mode(BigDecimal::EXCEPTION_OVERFLOW, true)
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lambda { BigDecimal("1E11111111111111111111") }.should raise_error(FloatDomainError)
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lambda { (BigDecimal("1E1000000000000000000")**10) }.should raise_error(FloatDomainError)
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end
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end
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