ruby/spec/rubyspec/library/complex/math/shared/sqrt.rb
eregon 95e8c48dd3 Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-07 12:04:49 +00:00

34 lines
1.3 KiB
Ruby

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