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-rw-r--r--spec/ruby/core/rational/abs_spec.rb11
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diff --git a/spec/ruby/core/rational/abs_spec.rb b/spec/ruby/core/rational/abs_spec.rb
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+require_relative "../../spec_helper"
+
+describe "Rational#abs" do
+ it "returns self's absolute value" do
+ Rational(3, 4).abs.should == Rational(3, 4)
+ Rational(-3, 4).abs.should == Rational(3, 4)
+ Rational(3, -4).abs.should == Rational(3, 4)
+
+ Rational(bignum_value, -bignum_value).abs.should == Rational(bignum_value, bignum_value)
+ end
+end