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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
57 lines
1.7 KiB
Ruby
57 lines
1.7 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require 'bigdecimal'
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describe "BigDecimal#fix" do
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before :each do
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@zero = BigDecimal("0")
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@mixed = BigDecimal("1.23456789")
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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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@infinity = BigDecimal("Infinity")
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@infinity_neg = BigDecimal("-Infinity")
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@nan = BigDecimal("NaN")
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@zero_pos = BigDecimal("+0")
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@zero_neg = BigDecimal("-0")
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end
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it "returns a BigDecimal" do
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BigDecimal("2E100000000").fix.kind_of?(BigDecimal).should == true
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BigDecimal("2E-999").kind_of?(BigDecimal).should == true
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end
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it "returns the integer part of the absolute value" do
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a = BigDecimal("2E1000")
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a.fix.should == a
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b = BigDecimal("-2E1000")
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b.fix.should == b
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BigDecimal("0.123456789E5").fix.should == BigDecimal("0.12345E5")
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BigDecimal("-0.123456789E5").fix.should == BigDecimal("-0.12345E5")
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end
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it "correctly handles special values" do
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@infinity.fix.should == @infinity
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@infinity_neg.fix.should == @infinity_neg
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@nan.fix.nan?.should == true
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end
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it "returns 0 if the absolute value is < 1" do
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BigDecimal("0.99999").fix.should == 0
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BigDecimal("-0.99999").fix.should == 0
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BigDecimal("0.000000001").fix.should == 0
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BigDecimal("-0.00000001").fix.should == 0
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BigDecimal("-1000000").fix.should_not == 0
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@zero.fix.should == 0
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@zero_pos.fix.should == @zero_pos
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@zero_neg.fix.should == @zero_neg
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end
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it "does not allow any arguments" do
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lambda {
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@mixed.fix(10)
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}.should raise_error(ArgumentError)
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end
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end
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