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Add in-tree mspec and ruby/spec

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* 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
This commit is contained in:
eregon 2017-05-07 12:04:49 +00:00
parent ed7d803500
commit 95e8c48dd3
4645 changed files with 230678 additions and 4 deletions
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22
spec/rubyspec/library/matrix/eigenvalue_decomposition/eigenvalues_spec.rb Normal file
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require File.expand_path('../../../../spec_helper', __FILE__)
require 'matrix'
describe "Matrix::EigenvalueDecomposition#eigenvalues" do
it "returns an array of complex eigenvalues for a rotation matrix" do
Matrix[[ 1, 1],
[-1, 1]].eigensystem.eigenvalues.sort_by{|v| v.imag}.should ==
[ Complex(1, -1), Complex(1, 1)]
end
it "returns an array of real eigenvalues for a symetric matrix" do
Matrix[[1, 2],
[2, 1]].eigensystem.eigenvalues.sort.map!{|x| x.round(10)}.should ==
[ -1, 3 ]
end
it "returns an array of real eigenvalues for a matrix" do
Matrix[[14, 16],
[-6, -6]].eigensystem.eigenvalues.sort.map!{|x| x.round(10)}.should ==
[ 2, 6 ]
end
end