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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
21 lines
817 B
Ruby
21 lines
817 B
Ruby
require 'mathn'
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require_relative '../fixtures/classes'
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describe :mathn_math_rsqrt, shared: true do
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it "returns the square root for Rational numbers" do
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@object.send(:rsqrt, Rational(9, 25)).should == Rational(3, 5)
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@object.send(:rsqrt, 16/64).should == Rational(1, 2)
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end
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it "returns the square root for positive numbers" do
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@object.send(:rsqrt, 1).should == 1
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@object.send(:rsqrt, 4.0).should == 2.0
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@object.send(:rsqrt, 12.34).should == Math.sqrt!(12.34)
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end
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it "raises an Math::DomainError if the argument is a negative number" do
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lambda { @object.send(:rsqrt, -1) }.should raise_error(Math::DomainError)
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lambda { @object.send(:rsqrt, -4.0) }.should raise_error(Math::DomainError)
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lambda { @object.send(:rsqrt, -16/64) }.should raise_error(Math::DomainError)
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end
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end
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