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require_relative '../../../spec_helper'
require 'matrix'
describe "Matrix::EigenvalueDecomposition#eigenvectors" do
it "returns an array of complex eigenvectors for a rotation matrix" do
# Fix me: should test for linearity, not for equality
Matrix[[ 1, 1],
[-1, 1]].eigensystem.eigenvectors.should ==
[ Vector[1, Complex(0, 1)],
Vector[1, Complex(0, -1)]
]
end
it "returns an array of real eigenvectors for a symmetric matrix" do
# Fix me: should test for linearity, not for equality
Matrix[[1, 2],
[2, 1]].eigensystem.eigenvectors.should ==
[ Vector[0.7071067811865475, -0.7071067811865475],
Vector[0.7071067811865475, 0.7071067811865475]
]
end
end
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