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require File.expand_path('../../../../spec_helper', __FILE__)
require 'matrix'
describe "Matrix::EigenvalueDecomposition#initialize" do
it "raises an error if argument is not a matrix" do
lambda {
Matrix::EigenvalueDecomposition.new([[]])
}.should raise_error(TypeError)
lambda {
Matrix::EigenvalueDecomposition.new(42)
}.should raise_error(TypeError)
end
it "raises an error if matrix is not square" do
lambda {
Matrix::EigenvalueDecomposition.new(Matrix[[1, 2]])
}.should raise_error(Matrix::ErrDimensionMismatch)
end
it "never hangs" do
m = Matrix[ [0,0,0,0,0], [0,0,0,0,1], [0,0,0,1,0], [1,1,0,0,1], [1,0,1,0,1] ]
Matrix::EigenvalueDecomposition.new(m).should_not == "infinite loop"
end
end
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