ruby/spec/rubyspec/library/complex/math/shared/asin.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

47 lines
2.1 KiB
Ruby

require File.expand_path('../../fixtures/classes', __FILE__)
describe :complex_math_asin, shared: true do
it "returns the arcsine of the argument" do
@object.send(:asin, 1).should be_close(Math::PI/2, TOLERANCE)
@object.send(:asin, 0).should be_close(0.0, TOLERANCE)
@object.send(:asin, -1).should be_close(-Math::PI/2, TOLERANCE)
@object.send(:asin, 0.25).should be_close(0.252680255142079, TOLERANCE)
@object.send(:asin, 0.50).should be_close(0.523598775598299, TOLERANCE)
@object.send(:asin, 0.75).should be_close(0.8480620789814816,TOLERANCE)
end
it "returns the arcsine for Complex numbers" do
@object.send(:asin, Complex(3, 4)).should be_close(Complex(0.633983865639174, 2.30550903124347), TOLERANCE)
end
it "returns a Complex number when the argument is greater than 1.0" do
@object.send(:asin, 1.0001).should be_close(Complex(1.5707963267949, -0.0141420177752494), TOLERANCE)
end
it "returns a Complex number when the argument is less than -1.0" do
@object.send(:asin, -1.0001).should be_close(Complex(-1.5707963267949, 0.0141420177752494), TOLERANCE)
end
end
describe :complex_math_asin_bang, shared: true do
it "returns the arcsine of the argument" do
@object.send(:asin!, 1).should be_close(Math::PI/2, TOLERANCE)
@object.send(:asin!, 0).should be_close(0.0, TOLERANCE)
@object.send(:asin!, -1).should be_close(-Math::PI/2, TOLERANCE)
@object.send(:asin!, 0.25).should be_close(0.252680255142079, TOLERANCE)
@object.send(:asin!, 0.50).should be_close(0.523598775598299, TOLERANCE)
@object.send(:asin!, 0.75).should be_close(0.8480620789814816,TOLERANCE)
end
it "raises an Errno::EDOM if the argument is greater than 1.0" do
lambda { @object.send(:asin!, 1.0001) }.should raise_error( Errno::EDOM)
end
it "raises an Errno::EDOM if the argument is less than -1.0" do
lambda { @object.send(:asin!, -1.0001) }.should raise_error( Errno::EDOM)
end
it "raises a TypeError when passed a Complex number" do
lambda { @object.send(:asin!, Complex(4, 5)) }.should raise_error(TypeError)
end
end