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401b64c4e8
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
45 lines
1.2 KiB
Ruby
45 lines
1.2 KiB
Ruby
require_relative '../../spec_helper'
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describe :rational_floor, shared: true do
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before do
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@rational = Rational(2200, 7)
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end
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describe "with no arguments (precision = 0)" do
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it "returns an integer" do
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@rational.floor.should be_kind_of(Integer)
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end
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it "returns the truncated value toward negative infinity" do
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@rational.floor.should == 314
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Rational(1, 2).floor.should == 0
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Rational(-1, 2).floor.should == -1
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end
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end
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describe "with a precision < 0" do
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it "returns an integer" do
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@rational.floor(-2).should be_kind_of(Integer)
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@rational.floor(-1).should be_kind_of(Integer)
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end
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it "moves the truncation point n decimal places left" do
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@rational.floor(-3).should == 0
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@rational.floor(-2).should == 300
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@rational.floor(-1).should == 310
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end
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end
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describe "with a precision > 0" do
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it "returns a Rational" do
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@rational.floor(1).should be_kind_of(Rational)
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@rational.floor(2).should be_kind_of(Rational)
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end
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it "moves the truncation point n decimal places right" do
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@rational.floor(1).should == Rational(1571, 5)
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@rational.floor(2).should == Rational(7857, 25)
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@rational.floor(3).should == Rational(62857, 200)
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end
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end
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end
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