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30 lines
853 B
Ruby
30 lines
853 B
Ruby
require_relative '../../spec_helper'
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describe "Integer#-@" do
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context "fixnum" do
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it "returns self as a negative value" do
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2.send(:-@).should == -2
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-2.should == -2
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-268435455.should == -268435455
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(--5).should == 5
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-8.send(:-@).should == 8
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end
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it "negates self at Fixnum/Bignum boundaries" do
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(-fixnum_max).should == (0 - fixnum_max)
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(-fixnum_max).should < 0
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(-fixnum_min).should == (0 - fixnum_min)
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(-fixnum_min).should > 0
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end
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end
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context "bignum" do
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it "returns self as a negative value" do
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bignum_value.send(:-@).should == -18446744073709551616
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(-bignum_value).send(:-@).should == 18446744073709551616
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bignum_value(921).send(:-@).should == -18446744073709552537
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(-bignum_value(921).send(:-@)).should == 18446744073709552537
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end
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end
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end
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