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require File.expand_path('../../fixtures/classes', __FILE__)
describe :complex_math_sqrt, :shared => true do
it "returns the square root for positive numbers" do
@object.send(:sqrt, 4).should == 2
@object.send(:sqrt, 19.36).should == 4.4
end
it "returns the square root for negative numbers" do
@object.send(:sqrt, -4).should == Complex(0, 2.0)
@object.send(:sqrt, -19.36).should == Complex(0, 4.4)
end
it "returns the square root for Complex numbers" do
@object.send(:sqrt, Complex(4, 5)).should be_close(Complex(2.2806933416653, 1.09615788950152), TOLERANCE)
@object.send(:sqrt, Complex(4, -5)).should be_close(Complex(2.2806933416653, -1.09615788950152), TOLERANCE)
end
end
describe :complex_math_sqrt_bang, :shared => true do
it "returns the square root for positive numbers" do
@object.send(:sqrt!, 4).should == 2
@object.send(:sqrt!, 19.36).should == 4.4
end
it "raises Errno::EDOM when the passed argument is negative" do
lambda { @object.send(:sqrt!, -4) }.should raise_error(Errno::EDOM)
lambda { @object.send(:sqrt!, -19.36) }.should raise_error(Errno::EDOM)
end
it "raises a TypeError when passed a Complex number" do
lambda { @object.send(:sqrt!, Complex(4, 5)) }.should raise_error(TypeError)
end
end
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