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require File.expand_path('../../../../spec_helper', __FILE__)
require 'matrix'
ruby_version_is "1.9.3" do
describe "Matrix::EigenvalueDecomposition#eigenvector_matrix" do
ruby_bug '#7208', '1.9.3' do
it "returns a complex eigenvector matrix given a rotation matrix" do
# Fix me: should test for linearity, not for equality
Matrix[[ 1, 1],
[-1, 1]].eigensystem.eigenvector_matrix.should ==
Matrix[[1, 1],
[Complex(0, 1), Complex(0, -1)]]
end
end
it "returns an real eigenvector matrix for a symetric matrix" do
# Fix me: should test for linearity, not for equality
Matrix[[1, 2],
[2, 1]].eigensystem.eigenvector_matrix.should ==
Matrix[[0.7071067811865475, 0.7071067811865475],
[-0.7071067811865475, 0.7071067811865475]]
end
end
end
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