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27 lines
710 B
Ruby
27 lines
710 B
Ruby
require_relative '../../spec_helper'
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require_relative 'shared/power'
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require 'bigdecimal'
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describe "BigDecimal#**" do
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it_behaves_like :bigdecimal_power, :**
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end
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describe "BigDecimal#exponent" do
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it "returns an Integer" do
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BigDecimal("2E100000000").exponent.kind_of?(Integer).should == true
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BigDecimal("2E-999").exponent.kind_of?(Integer).should == true
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end
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it "is n if number can be represented as 0.xxx*10**n" do
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BigDecimal("2E1000").exponent.should == 1001
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BigDecimal("1234567E10").exponent.should == 17
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end
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it "returns 0 if self is 0" do
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BigDecimal("0").exponent.should == 0
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BigDecimal("+0").exponent.should == 0
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BigDecimal("-0").exponent.should == 0
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end
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end
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